988 FOUS62 KALR 210105 FFGSJU COUNTY FLASH FLOOD GUIDANCE...PUERTO RICO NATIONAL WEATHER SERVICE SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA 904 PM EDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN FORECAST ZONES. LOWER AMOUNTS MAY CAUSE FLASH FLOODING IN URBAN OR MOUNTAINOUS AREAS. .B ALR 20260821 Z DH00/DC202608210104 /DUE/PPHCF/PPTCF/PPQCF :IDENTIFIERS ARE 2-LETTER STATE, Z FOR ZONE, 3-DIGIT ZONE NUMBER : :IDENT 1HR 3HR 6HR ZONE NAME :======= ==== ==== ==== ==================== PRZ001 1.9/ 3.5/ 4.8 PRZ002 1.9/ 3.5/ 4.7 PRZ003 1.9/ 3.4/ 4.7 PRZ004 1.9/ 3.4/ 4.7 PRZ005 1.7/ 2.3/ 3.0 PRZ006 1.7/ 2.3/ 3.0 PRZ007 1.7/ 2.3/ 3.0 PRZ008 1.7/ 2.3/ 3.0 PRZ009 1.7/ 2.3/ 3.0 PRZ010 1.7/ 2.3/ 3.0 PRZ011 1.7/ 2.3/ 3.0 PRZ012 2.0/ 3.1/ 4.4 PRZ013 2.0/ 3.1/ 4.4 VIZ001 2.0/ 3.2/ 4.5 VIZ002 2.1/ 3.3/ 4.6 .END $$ S.E.R.F.C. 770-486-0028 or 770-282-2112 Regular Hours 6am-10pm Eastern Time After Hours Please Follow Callback Instructions  957 FGUS74 KORN 210120 FFHMRX HEADWATER GUIDANCE FOR HSA.....MORRISTOWN TN NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....TENNESSEE : DOET1 3.0/ 3.4/ 3.9/ 4.7/ 5.8 :ELIZABETHTON, TN DOE R. RMTT1 3.3/ 3.7/ 5.5/ 5.5/ 5.9 :ROAN MOUNTAIN, TN DOE R. : :.....VIRGINIA : CLVV2 2.3/ 2.5/ 2.7/ 3.2/ 4.1 :CLEVELAND, VA CLINCH R. .END $$  951 FOUS74 KORN 210120 FFHHUN HEADWATER GUIDANCE FOR HSA.....HUNTSVILLE AL NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....ALABAMA : FRYA1 2.9/ 3.1/ 3.4 :FARLEY, AL ALDRIDGE CREEK SHEA1 2.8/ 2.9/ 3.1 :SHERWOOD, AL ALDRIDGE CREEK ATNA1 3.5/ 5.0/ 5.5 :ATHENS, AL LIMESTONE CREEK BPPA1 3.5/ 4.0/ 4.3 :BUCKS POCKET, AL S. SAUTY CREEK MADA1 3.0/ 3.3/ 3.6 :MADISON, AL INDIAN CREEK .END $$  952 FOUS74 KORN 210120 FFHFFC HEADWATER GUIDANCE FOR HSA.....ATLANTA GA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....GEORGIA : ENGG1 1.8/ 1.9/ 2.1 :NEW ENGLAND, GA LOOKOUT CREEK HWEG1 3.5/ 3.6/ 4.0 :HIAWASSEE, GA HIAWASSEE R. .END $$  953 FOUS74 KORN 210120 FFHGSP HEADWATER GUIDANCE FOR HSA.....GREENVILLE/SPARTANBURG SC NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....NORTH CAROLINA : ROSN7 3.5/ 4.7/ 5.5/ 6.0/ 6.5 :ROSMAN, NC FRENCH BROAD R. BLTN7 3.0/ 4.1/ 5.5/ 6.0/ 6.5 :BILTMORE, NC SWANNANOAH R. BIRN7 3.5/ 5.0/ 5.5/ 6.0/ 6.5 :BIRDTOWN, NC OCONALUFTEE R. .END $$  956 FOUS74 KORN 210120 FFHLZK HEADWATER GUIDANCE FOR HSA.....LITTLE ROCK AR NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....ARKANSAS : BTNA4 3.5/ 5.0/ 5.5 :BENTON, AR SALINE R. CIGA4 2.8/ 3.5/ 4.2 :CLINTON, AR S. FK LZKTLE RED R. HDYA4 3.5/ 5.0/ 5.5 :HARDY, AR SPRING R. .END $$  958 FOUS74 KORN 210120 FFHRNK HEADWATER GUIDANCE FOR HSA.....BLACKSBURG VA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....VIRGINIA : SALV2 2.1/ 2.3/ 2.5/ 3.1/ 4.0 :SALTVILLE, VA N.F. HOLSTON R. SGWN7 1.3/ 1.3/ 1.6/ 2.1/ 3.0 :SUGAR GROVE, NC WATAUGA R. SMFV2 2.7/ 2.9/ 3.2/ 3.7/ 4.5 :SEVEN MILE FORD, VA M.F. HOLSTON R. RLRV2 1.5/ 1.6/ 1.7/ 2.1/ 3.0 :RICHLANDS, VA CLINCH R. .END $$  959 FOUS74 KORN 210120 FFHJAN HEADWATER GUIDANCE FOR HSA.....JACKSON MS NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....MISSISSIPPI : MEIM6 3.5/ 5.0/ 5.5 :MERIDIAN, MS SOWASHEE CREEK JCCM6 3.5/ 5.0/ 5.5 :JACKSON, MS CANY CREEK JHMM6 3.5/ 5.0/ 5.5 :JACKSON, MS HANGING MOSS CREEK LYNM6 3.5/ 5.0/ 5.5 :JACKSON, MS LYNCH CREEK TOWM6 3.5/ 5.0/ 5.5 :JACKSON, MS TOWN CREEK UBCM6 3.5/ 5.0/ 5.5 :JACKSON, MS EUBANKS CREEK .END $$  961 FOUS74 KORN 210120 FFHSHV HEADWATER GUIDANCE FOR HSA.....SHREVEPORT LA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....LOUISIANA : KEIL1 3.5/ 5.0/ 5.5 :KEITHVILLE, LA CYPRESS BAYOU .END $$  962 FOUS74 KORN 210120 FFHLSX HEADWATER GUIDANCE FOR HSA.....ST. LOUIS MO NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 816 PM CDT THU AUG 20 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH00/DC2608210116 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....MISSOURI : ANNM7 2.8/ 3.6/ 4.4 :ANNAPOLIS, MO BLACK R. .END $$  337 FOUS71 KRHA 210151 FFHNJ1 HEADWATER STATEMENT FOR NEW JERSEY STREAMS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 PM EDT THU AUG 20 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH00/DC2608210130/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==================== ================== : : NWS BROOKHAVEN SERVICE AREA... : Ramapo River... MAWN4 1.3/ 1.6/ 2.1/ 2.5 :Mahwah (8ft) Ramapo River :MAWN4md 1.5/ 1.9/ 2.6/ 3.1 Mahwah (9) Ramapo River :MAWN4mj 2.5/ 3.1/ 4.2/ 4.8 Mahwah (12) Ramapo River : Hohokus Brook... HOHN4 0.5/ 0.5/ 0.6/ 0.8 :Ho-Ho-Kus (3ft) Hohokus Brook : Saddle River... LODN4 0.6/ 0.6/ 0.7/ 1.2 :Lodi (5.5ft) Saddle River :LODN4md 1.1/ 1.1/ 1.3/ 2.0 Lodi (7) Saddle River :LODN4mj 1.4/ 1.4/ 1.6/ 2.5 Lodi (8) Saddle River : Rahway River... SPGN4 1.0/ 1.0/ 1.0/ 1.3 :Springfield (5.5ft) Rahway River : : NWS MT. HOLLY SERVICE AREA... : PASSAIC BASIN... : Passaic River... CAMN4 2.9/ 2.9/ 2.9/ 2.9 :Chatham (6ft) Passaic River :CAMN4md 3.8/ 4.2/ 4.9/ 5.6 Chatham (7.2) Passaic River :CAMN4mj 4.6/ 4.9/ 5.9/ 6.8 Chatham (8.2) Passaic River : Rockaway River... BOTN4 3.0/ 3.6/ 4.3/ 5.3 :Boonton Abv. (5ft) Rockaway River :BOTN4md 3.5/ 4.2/ 5.0/ 6.3 Boonton Abv. (6) Rockaway River :BOTN4mj 3.8/ 4.5/ 5.4/ 6.9 Boonton Abv. (7) Rockaway River : Whippany River... WHIN4 1.5/ 1.6/ 1.8/ 1.9 :Morristown (6ft) Whippany River : RARITAN BASIN.. : South Branch Raritan River... STTN4 1.5/ 1.7/ 2.3/ 3.0 :Stanton (8ft) S. Br. Raritan River :STTN4md 1.7/ 1.9/ 2.9/ 3.5 Stanton (10) S. Br. Raritan River :STTN4mj 1.9/ 2.2/ 3.5/ 4.3 Stanton (12) S. Br. Raritan River : North Branch Raritan River... RRTN4 1.4/ 1.7/ 2.0/ 2.6 :Raritan (10ft) N. Br. Raritan River :RRTN4md 1.5/ 1.9/ 2.5/ 3.3 Raritan (12) N. Br. Raritan River :RRTN4mj 1.9/ 2.4/ 3.3/ 4.2 Raritan (15) N. Br. Raritan River : Millstone River... BKWN4 2.3/ 2.6/ 2.8/ 2.8 :Blackwells Mills(9ft) Millstone River :BKWN4md 2.3/ 2.6/ 2.9/ 2.9 Blackwells Mills(10) Millstone River :BKWN4mj 2.7/ 3.1/ 3.6/ 4.4 Blackwells Mills(15) Millstone River : DELAWARE BASIN... : Assunpink Creek...TACN4 1.6/ 1.6/ 1.6/ 1.9 :Trenton (8.5ft) Assunpink Creek :TACN4md 1.7/ 1.8/ 2.0/ 2.6 Trenton (9.5) Assunpink Creek :TACN4mj 1.8/ 2.0/ 2.7/ 3.4 Trenton (11) Assunpink Creek .END $$ NNNN $$ NNNN  340 FOUS71 KRHA 210151 FFHPA2 HEADWATER STATEMENT FOR THE DELAWARE AND SUSQUEHANNA BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 PM EDT THU AUG 20 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH00/DC2608210130/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS BINGHAMTON SERVICE AREA... : SUSQUEHANNA BASIN... : Tioughnioga River... CRTN6 2.5/ 2.8/ 3.1/ 3.4 :Cortland (8ft) :CRTN6md 2.6/ 2.9/ 3.8/ 4.2 Cortland (10) :CRTN6mj 2.8/ 3.3/ 4.3/ 4.9 Cortland (12.5) : Chenango River... SHBN6 2.5/ 2.8/ 2.9/ 3.5 :Sherburne (8.5ft) :SHBN6md 2.6/ 2.9/ 3.3/ 4.3 Sherburne (9) :SHBN6mj 2.7/ 3.1/ 3.7/ 4.6 Sherburne (10.6) : Otselic River... CINN6 2.9/ 3.2/ 3.6/ 4.5 :Cincinnatus (9ft) : ...moderate and major flood stages above rating table. : Cohocton River... CMPN6 2.8/ 3.1/ 3.6/ 4.3 :Campbell (8ft) :CMPN6md 3.0/ 3.4/ 4.4/ 5.0 Campbell (10) :CMPN6mj 3.2/ 3.6/ 5.0/ 5.7 Campbell (11) : Canisteo River... WCRN6 2.0/ 2.3/ 2.9/ 3.7 :West Cameron (17ft) :WCRN6md 2.1/ 2.4/ 3.1/ 3.9 West Cameron (18) :WCRN6mj 2.4/ 2.8/ 3.7/ 4.7 West Cameron (21) : Towanda Creek... MONP1 1.5/ 1.7/ 2.2/ 2.9 :Monroeton (15.5ft) :MONP1md 1.7/ 1.9/ 2.5/ 3.2 Monroeton (17) :MONP1mj 1.9/ 2.2/ 2.9/ 3.7 Monroeton (18.5) : Tunkhannock Creek... TNKP1 1.9/ 2.4/ 3.6/ 4.3 :Tunkhannock (11ft) :TNKP1md 2.1/ 2.6/ 4.0/ 4.9 Tunkhannock (14) :TNKP1mj 2.3/ 3.0/ 4.5/ 5.5 Tunkhannock (17) : Lackawanna River... OFRP1 2.1/ 2.6/ 3.2/ 4.4 :Old Forge (11ft) :OFRP1md 2.2/ 2.7/ 3.4/ 4.7 Old Forge (13) :OFRP1mj 2.4/ 2.9/ 3.8/ 5.1 Old Forge (16) : DELAWARE BASIN... : East Branch Delaware River... MRGN6 3.4/ 3.8/ 4.4/ 4.9 :Margaretville (11ft) :MRGN6md 4.1/ 4.6/ 5.3/ 6.1 Margaretville (12) :MRGN6mj 4.8/ 5.4/ 6.5/ 7.5 Margaretville (13) : West Branch Delaware River... WALN6 2.4/ 2.5/ 2.8/ 3.3 :Walton (11.5ft) :WALN6md 2.7/ 2.9/ 3.3/ 3.8 Walton (14) :WALN6mj 3.3/ 3.6/ 4.1/ 4.6 Walton (16) : Beaverkill Creek... CKFN6 1.6/ 1.7/ 2.0/ 2.5 :Cooks Falls (10ft) :CKFN6md 2.4/ 2.6/ 3.3/ 4.4 Cooks Falls (16) :CKFN6mj 2.8/ 3.1/ 4.1/ 5.4 Cooks Falls (18) : Lackawaxen River... HWYP1 2.1/ 2.5/ 3.0/ 3.9 :Hawley (14ft) :HWYP1md 2.9/ 3.3/ 4.0/ 5.1 Hawley (20) :HWYP1mj 3.1/ 3.6/ 4.4/ 5.6 Hawley (22) : : NWS STATE COLLEGE SERVICE AREA... : SUSQUEHANNA BASIN... : Tioga River... MFDP1 1.7/ 2.3/ 3.3/ 4.1 :Mansfield (12ft) :MFDP1md 1.8/ 2.5/ 3.7/ 4.5 Mansfield (13) :MFDP1mj 2.0/ 2.8/ 4.2/ 5.0 Mansfield (14) : Penns Creek... PNCP1 2.1/ 2.4/ 2.5/ 2.6 :Penns Creek (8ft) :PNCP1md 2.2/ 2.6/ 3.0/ 3.7 Penns Creek (10) :PNCP1mj 2.4/ 2.9/ 3.7/ 4.7 Penns Creek (12) : Frankstown Branch Juniata River... WIBP1 1.3/ 1.5/ 1.7/ 1.7 :Williamsburg (12ft) :WIBP1md 1.4/ 1.5/ 1.8/ 1.8 Williamsburg (13) :WIBP1mj 1.4/ 1.6/ 2.0/ 2.3 Williamsburg (15) : Little Juniata River... SPKP1 0.5/ 0.6/ 0.7/ 0.7 :Spruce Creek (8ft) :SPKP1md 0.7/ 0.7/ 1.0/ 1.0 Spruce Creek (10) :SPKP1mj 1.1/ 1.2/ 1.6/ 1.9 Spruce Creek (14) : Aughwick Creek... SLYP1 1.2/ 1.3/ 1.5/ 1.8 :Shirleysburg (10ft) :SLYP1md 1.4/ 1.5/ 1.7/ 2.2 Shirleysburg (12) :SLYP1mj 3.5/ 3.9/ 4.7/ 6.5 Shirleysburg (20) : Sherman Creek... SMDP1 1.9/ 2.3/ 2.8/ 3.4 :Shermans Dale (9ft) :SMDP1md 2.2/ 2.7/ 3.3/ 3.9 Shermans Dale (11) :SMDP1mj 3.5/ 4.2/ 5.2/ 6.0 Shermans Dale (16) : Conodoguinet Creek... HGSP1 3.0/ 3.0/ 3.2/ 3.2 :Hogestown (8ft) :HGSP1md 3.2/ 3.4/ 4.2/ 4.6 Hogestown (10) :HGSP1mj 3.5/ 3.9/ 4.9/ 5.5 Hogestown (12) : Yellow Breeches Creek... CPHP1 1.5/ 1.9/ 2.2/ 3.6 :Camp Hill (7ft) :CPHP1md 1.6/ 2.0/ 2.5/ 3.9 Camp Hill (9) :CPHP1mj 2.1/ 2.6/ 3.5/ 5.1 Camp Hill (13) : Swatara Creek... HTVP1 1.7/ 2.2/ 2.8/ 4.0 :Harper Tavern (9ft) :HTVP1md 2.0/ 2.6/ 3.5/ 4.9 Harper Tavern (12) :HTVP1mj 2.4/ 3.1/ 4.0/ 5.7 Harper Tavern (15) : Conestoga River... LNCP1 1.0/ 1.4/ 1.5/ 2.4 :Lancaster (11ft) :LNCP1md 1.1/ 1.6/ 1.8/ 2.8 Lancaster (13) :LNCP1mj 1.3/ 1.8/ 2.2/ 3.2 Lancaster (15) : DELAWARE BASIN... : Schuylkill River... LGVP1 2.4/ 2.5/ 2.6/ 2.8 :Landingville (8ft) :LGVP1md 3.2/ 3.4/ 3.6/ 4.0 Landingville (12) :LGVP1mj 3.9/ 4.3/ 4.6/ 5.1 Landingville (14) : : NWS MT. HOLLY SERVICE AREA... : DELAWARE BASIN... : Schuylkill River... BREP1 2.6/ 3.5/ 4.4/ 5.7 :Berne (12ft) :BREP1md 3.0/ 3.9/ 5.0/ 6.6 Berne (14) :BREP1mj 3.3/ 4.4/ 5.5/ 7.3 Berne (16) : Bush Kill... SHOP1 2.3/ 2.9/ 3.1/ 3.1 :Shoemakers (6ft) :SHOP1md 2.5/ 3.1/ 3.6/ 4.1 Shoemakers (7) :SHOP1mj 2.7/ 3.3/ 4.2/ 4.7 Shoemakers (8) : Brodhead Creek... MNSP1 1.4/ 1.9/ 2.5/ 3.4 :Minisink Hills(10ft) :MNSP1md 1.6/ 2.0/ 2.9/ 3.9 Minisink Hills(12) :MNSP1mj 1.8/ 2.3/ 3.4/ 4.6 Minisink Hills(15) : Little Lehigh Creek...APAP1 4.0/ 4.4/ 4.8/ 5.7 :Allentown-10th (8ft) :APAP1md 5.0/ 5.4/ 6.0/ 7.2 Allentown-10th (10) :APAP1mj 6.0/ 6.5/ 7.4/ 8.0 Allentown-10th (12) : Perkiomen Creek... GRAP1 1.5/ 1.9/ 2.6/ 3.2 :Graterford (11ft) :GRAP1md 1.7/ 2.1/ 3.0/ 3.6 Graterford (13) :GRAP1mj 2.0/ 2.5/ 3.6/ 4.3 Graterford (16) : Neshaminy Creek... LNGP1 1.5/ 1.5/ 1.5/ 1.5 :Langhorne (9ft) :LNGP1md 1.7/ 1.9/ 2.0/ 2.0 Langhorne (10) :LNGP1mj 1.9/ 2.1/ 2.7/ 2.7 Langhorne (12) : Chester Creek... CHSP1 1.5/ 1.5/ 1.8/ 2.3 :Chester (8ft) :CHSP1md 1.9/ 2.0/ 2.3/ 3.0 Chester (10) :CHSP1mj 2.8/ 2.9/ 3.4/ 4.3 Chester (14) : West Branch Brandywine Creek... MODP1 3.4/ 3.5/ 3.9/ 4.1 :Modena (9ft) :MODP1md 3.9/ 4.1/ 4.5/ 4.8 Modena (10) :MODP1mj 6.5/ 7.0/ 7.4/ 8.0 Modena (12) : East Branch Brandywine Creek... DWNP1 0.9/ 0.9/ 0.9/ 1.0 :Downingtown (7ft) :DWNP1md 1.5/ 1.5/ 1.6/ 1.8 Downingtown (9) :DWNP1mj 2.3/ 2.3/ 2.5/ 2.7 Downingtown (11) : Brandywine Creek... CDFP1 1.7/ 1.7/ 1.8/ 2.0 :Chadds Ford (9ft) :CDFP1md 1.9/ 1.9/ 2.3/ 2.9 Chadds Ford (11) :CDFP1mj 2.1/ 2.2/ 2.9/ 3.8 Chadds Ford (13) : Christina River... CHBD1 1.2/ 1.3/ 1.5/ 2.2 :Coochs Brdg(11ft) :CHBD1md 1.5/ 1.7/ 2.0/ 2.9 Coochs Brdg(12) :CHBD1mj 2.1/ 2.4/ 2.8/ 4.0 Coochs Brdg(13) : White Clay Creek... DPKD1 1.2/ 1.3/ 1.4/ 1.9 :Delaware Pk (13ft) :DPKD1md 1.8/ 1.9/ 2.2/ 2.8 Delaware Pk (15) :DPKD1mj 2.9/ 3.1/ 3.4/ 4.4 Delaware Pk (16.5) : Red Clay Creek... RCCD1 1.6/ 1.8/ 2.1/ 2.5 :Wooddale (7ft) :RCCD1md 2.3/ 2.5/ 2.9/ 3.5 Wooddale (8.5) :RCCD1mj 3.0/ 3.3/ 3.7/ 4.5 Wooddale (10) .END :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS BINGHAMTON SERVICE AREA... .B RHA 260821 Z DH00/DC2608210130/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages : Lackawanna River... ARHP1 3.7/ 3.8/ 4.2/ 5.1 :Archbald (8ft) :ARHP1md 4.3/ 4.5/ 4.9/ 6.0 Archbald (9) :ARHP1mj 4.9/ 5.1/ 5.7/ 7.0 Archbald (10) PKIP1 4.1/ 4.2/ 4.4/ 4.9 :Scranton (12.5ft.) :PKIP1md 4.4/ 4.5/ 4.7/ 5.2 Scranton (14) :PKIP1mj 4.6/ 4.7/ 4.9/ 5.4 Scranton (15) .END : Model-simulated 3-hourly stage forecasts including QPF... .E ARHP1 20260821 DC2608210150/DH03/HGIFX/DIH3/ .E1 2.1/2.2/2.1/2.0/2.0/1.9/1.9/1.9 .E PKIP1 20260821 DC2608210150/DH03/HGIFX/DIH3/ .E1 2.0/2.1/1.8/1.7/1.6/1.5/1.4/1.3 $$ NNNN  341 FOUS71 KRHA 210151 FFHVA2 HEADWATER STATEMENT FOR THE POTOMAC AND JAMES BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 PM EDT THU AUG 20 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH00/DC2608210130/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS STERLING SERVICE AREA... : POTOMAC BASIN... : North Branch Potomac River... KITM2 2.0/ 2.2/ 2.6/ 3.4 :Kitzmiller (9ft) :KITM2md 2.8/ 3.1/ 3.9/ 5.3 Kitzmiller (11) :KITM2mj 4.2/ 4.7/ 6.1/ 8.0 Kitzmiller (13) : Georges Creek... WSTM2 1.1/ 1.3/ 1.5/ 1.8 :Westernport (8ft) :WSTM2md 1.8/ 2.0/ 2.4/ 2.8 Westernport (10) :WSTM2mj 2.4/ 2.8/ 3.2/ 3.8 Westernport (12) : South Branch Potomac River... FKLW2 2.0/ 2.3/ 2.5/ 3.2 :Franklin (7ft) :FKLW2md 2.2/ 2.5/ 2.8/ 3.7 Franklin (9) :FKLW2mj 2.4/ 2.8/ 3.1/ 4.4 Franklin (11) : Opequon Creek... MBGW2 2.5/ 3.2/ 3.6/ 4.7 :Martinsburg (10ft) :MBGW2md 2.7/ 3.4/ 4.0/ 5.5 Martinsburg (12.5) :MBGW2mj 3.0/ 3.9/ 4.7/ 6.5 Martinsburg (15) : South River... WAYV2 3.4/ 4.2/ 5.5/ 7.0 :Waynesboro (9.5ft) :WAYV2md 3.6/ 4.5/ 6.0/ 7.7 Waynesboro (11) :WAYV2mj 4.0/ 4.9/ 6.8/ 8.0 Waynesboro (13) : North Fork Shenandoah River... COOV2 2.4/ 2.7/ 3.6/ 4.3 :Cootes Store (15ft) :COOV2md 2.8/ 3.2/ 4.4/ 5.3 Cootes Store (18) :COOV2mj 3.3/ 3.7/ 5.3/ 6.5 Cootes Store (21) : Antietam Creek... SACM2 2.1/ 2.8/ 3.7/ 5.5 :Sharpsburg (8ft) :SACM2md 2.2/ 3.0/ 4.4/ 6.0 Sharpsburg (10) :SACM2mj 2.3/ 3.2/ 5.1/ 6.8 Sharpsburg (12) : Seneca Creek... DAWM2 2.4/ 2.6/ 3.0/ 3.6 :Dawsonville (7.5ft) :DAWM2md 3.0/ 3.4/ 4.7/ 5.9 Dawsonville (11) :DAWM2mj 5.0/ 5.8/ 7.4/ 8.0 Dawsonville (16) : : NWS BLACKSBURG SERVICE AREA... : Maury River... BVSV2 4.5/ 6.4/ 7.4/ 8.0 :Buena Vista (17ft) :BVSV2cs 4.1/ 5.5/ 6.9/ 8.0 Buena Vista (13) :BVSV2md 4.7/ 6.7/ 7.4/ 8.0 Buena Vista (19) :BVSV2mj 5.0/ 7.0/ 7.4/ 8.0 Buena Vista (21) .END : :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS STERLING SERVICE AREA... : Rock Creek at Sherrill Drive.,Washington DC .B RHA 260821 Z DH00/DC2608210130/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages RCKD2 1.6/ 1.7/ 1.9/ 2.2 :Washington, DC (7ft) :RCKD2md 2.2/ 2.4/ 2.7/ 3.4 Washington, DC (10) :RCKD2mj 3.0/ 3.3/ 3.7/ 4.5 Washington, DC (12) .END : Model-simulated 3-hourly stage forecasts including QPF... .E RCKD2 20260821 DC2608210150/DH03/HGIFX/DIH3/ .E1 3.1/2.7/2.4/2.3/2.1/2.0/2.0/2.0 $$ NNNN  717 FOUS73 KMSR 210200 FFHMPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 TWIN CITIES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : SNCM5 2.4/ 2.6/ 2.9 :JORDAN MN SAND CR PNLM5 3.1/ 3.7/ 4.5 :PINE ISLAND MN MID FK ZUMBRO R PILM5 3.5/ 4.0/ 4.5 :PINE ISLAND MN N B MID FK ZUMBRO R WGOM5 3.5/ 4.0/ 4.5 :WANAMINGO MN NO FK ZUMBRO R .END $$  721 FOUS73 KMSR 210200 FFHLOT HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 CHICAGO HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : NBPI2 2.4/ 2.5/ 2.7 :CHICAGO IL N BR CHICAGO R CDCI2 0.9/ 1.1/ 1.4 :CHICAGO HEIGHTS IL DEER CR DRFI2 2.3/ 2.7/ 3.6 :DEERFIELD IL N BR CHICAGO R DEKI2 3.5/ 4.0/ 4.5 :DE KALB IL S BR KISHWAUKEE R DSPI2 2.9/ 3.0/ 3.1 :DES PLAINES IL DES PLAINES R WLRI2 2.9/ 3.2/ 3.6 :DES PLAINES IL WELLER CR EMHI2 2.6/ 3.0/ 3.3 :ELMHURST IL SALT CR FLSI2 1.0/ 1.3/ 1.6 :FLOSSMOOR IL BUTTERFIELD CR GLWI2 1.3/ 1.7/ 2.0 :GLENWOOD IL THORN CR GUNI2 2.2/ 2.2/ 2.2 :GURNEE IL DES PLAINES R JHCI2 2.2/ 2.4/ 2.6 :JOLIET IL HICKORY CR LAFI2 2.3/ 2.7/ 3.6 :LAKE FOREST IL SKOKIE R NILI2 3.3/ 4.0/ 4.5 :NILES IL N BR CHICAGO R NBRI2 3.5/ 4.0/ 4.5 :NORTHBROOK IL W FK N BR CHICAGO R OAKI2 2.8/ 2.8/ 3.3 :OAK FOREST IL MIDLOTHIAN CR MCDI2 3.1/ 3.5/ 3.9 :PROSPECT HTS IL MCDONALD CR ALPI2 1.7/ 1.9/ 2.1 :ROCKFORD IL ALPINE DAM-KEITH CR LEVI2 2.1/ 2.4/ 2.9 :ROCKFORD IL LEVINGS LAKE PPLI2 2.2/ 2.6/ 3.1 :ROCKFORD IL PAGE PARK LAKE ROLI2 2.7/ 3.2/ 3.6 :ROLLING MEADOWS IL SALT CR SCHI2 3.4/ 3.9/ 4.4 :ST CHARLES IL FERSON CR SORI2 3.3/ 3.4/ 3.5 :SHOREWOOD IL DU PAGE R THNI2 1.1/ 1.1/ 1.1 :THORNTON IL THORN CR WHEI2 2.8/ 3.0/ 3.2 :WHEELING IL BUFFALO CR WLSI2 3.5/ 4.0/ 4.5 :WILLOW SPRINGS IL FLAG CR YRKI2 2.5/ 2.5/ 2.5 :YORKVILLE IL BLACKBERRY CR : : *** INDIANA HEADWATER POINTS *** : HDDI3 3.5/ 4.0/ 4.3 :DYER IN HART DITCH MNTI3 3.2/ 3.2/ 3.2 :MUNSTER IN HART DITCH LCMI3 2.5/ 2.4/ 2.5 :MUNSTER IN LITTLE CALUMET R PRTI3 1.9/ 1.8/ 1.8 :PORTER IN LITTLE CALUMET R .END $$  722 FOUS73 KMSR 210200 FFHFGF HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 GRAND FORKS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : CSRM5 3.5/ 3.9/ 4.0 :CAMPBELL MN 1W SO FK RABBIT R MALM5 3.5/ 3.9/ 4.4 :MALUNG MN 2NW ROSEAU R BLO SO FK : : *** NORTH DAKOTA HEADWATER POINTS *** : DWGN8 3.5/ 4.0/ 4.5 :DWIGHT ND 1NE ANTELOPE CR HGRN8 3.5/ 4.0/ 4.5 :HILLSBORO ND GOOSE R LTRN8 2.5/ 2.6/ 2.9 :LARIMORE ND 5ENE TURTLE R .END $$  727 FOUS73 KMSR 210200 FFHDMX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 DES MOINES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : AKWI4 2.7/ 2.7/ 2.9 :ACKWORTH IA SOUTH R AMWI4 2.7/ 2.8/ 2.9 :AMES IA IOWAY CR BSSI4 2.6/ 2.7/ 2.9 :BUSSEY IA CEDAR CR DFMI4 3.2/ 3.2/ 3.4 :DSM-EASTON FOUR MILE CR CLVI4 2.4/ 2.7/ 2.9 :CLIVE I-80/35 WALNUT CR DOSI4 2.6/ 2.7/ 3.1 :DSM-63RD ST WALNUT CR MCWI4 3.5/ 3.7/ 4.1 :MASON CITY IA WINNEBAGO R .END $$  729 FOUS73 KMSR 210200 FFHILX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 LINCOLN HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : BMII2 3.5/ 4.0/ 4.5 :BLOOMINGTON IL SUGAR CR RLLI2 0.5/ 1.0/ 1.0 :ROWELL IL SALT CR .END $$  730 FOUS73 KMSR 210200 FFHLSX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 ST LOUIS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MISSOURI HEADWATER POINTS *** : EWNM7 2.8/ 3.1/ 3.6 :EWING MO 5E NORTH FABIUS R EWMM7 2.8/ 3.2/ 3.6 :EWING MO 1NNE MIDDLE FABIUS R PALM7 1.6/ 1.8/ 2.1 :PALMYRA MO NORTH R TAYM7 1.6/ 2.1/ 2.7 :TAYLOR MO S FABIUS R PMZM7 2.1/ 2.4/ 2.8 :HOLLIDAY MO 2N MI FK SALT R TRYM7 1.4/ 1.5/ 1.7 :TROY MO CUIVRE R DRCM7 1.7/ 1.9/ 2.0 :ST PETERS MO DARDENNE CR LSLM7 1.9/ 2.1/ 2.4 :LAKE SAINT LOUIS PERUQUE CR - ABOVE LSTM7 1.4/ 1.6/ 1.9 :LAKE ST LOUIS MO PERUQUE CR CSNM7 1.2/ 1.3/ 1.4 :COOK STATION MO 1N MERAMEC R SEEM7 1.2/ 1.4/ 1.7 :STEELVILLE MO 2N MERAMEC R UNNM7 3.1/ 3.2/ 3.4 :UNION MO BOURBEUSE R BYRM7 2.5/ 3.0/ 3.4 :BYRNESVILLE MO 2NNE BIG R .END $$  732 FOUS73 KMSR 210200 FFHAPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 GAYLORD HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MICHIGAN HEADWATER POINTS *** : BVTM4 3.5/ 4.0/ 4.5 :BEAVERTON MI TOBACCO R MYFM4 3.5/ 4.0/ 4.3 :MAYFIELD MI BOARDMAN R RUDM4 3.5/ 4.0/ 4.5 :RUDYARD MI PINE RIVER .END $$  733 FOUS73 KMSR 210200 FFHMKX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 MILWAUKEE HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** WISCONSIN HEADWATER POINTS *** : AFTW3 2.5/ 3.0/ 3.5 :AFTON WI ROCK R BCHW3 1.9/ 2.0/ 2.3 :BLANCHARDVILLE WI E BR PECATONICA R BUNW3 2.5/ 2.8/ 3.3 :BUNCOMBE WI GALENA R DARW3 2.4/ 2.6/ 3.3 :DARLINGTON WI PECATONICA R MTNW3 1.8/ 2.0/ 2.9 :MARTINTOWN WI PECATONICA R MAZW3 2.6/ 2.8/ 3.4 :MAZOMANIE WI BLACK EARTH CR KINW3 3.2/ 3.9/ 4.5 :MILWAUKEE WI KINNICKINNIC R SEBW3 2.9/ 3.1/ 3.7 :SHEBOYGAN WI SHEBOYGAN R WKEW3 3.5/ 3.7/ 3.7 :WAUKESHA WI FOX R WWTW3 3.5/ 3.9/ 4.2 :WAUWATOSA WI MENOMONEE R BLOW3 1.8/ 2.0/ 2.2 :BELOIT WI TURTLE CR MFSW3 0.5/ 1.0/ 1.0 :MENOMONEE FALLS WI MENOMONEE R OAKW3 2.4/ 2.5/ 2.9 :SOUTH MILWAUKEE OAK CR .END $$  734 FOUS73 KMSR 210200 FFHARX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 PM CDT THU AUG 20 2026 LA CROSSE HYDRLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH00/DC2608210200 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : DEHI4 3.5/ 4.0/ 4.5 :DECORAH IA UPPER IOWA R DCHI4 2.6/ 3.0/ 3.5 :DORCHESTER IA UPPER IOWA R GRBI4 2.2/ 2.4/ 2.6 :GARBER IA TURKEY R : : *** MINNESOTA HEADWATER POINTS *** : ASTM5 2.3/ 2.5/ 2.9 :AUSTIN WWTP MN CEDAR R DOBM5 2.7/ 2.8/ 3.0 :AUSTIN MN-21ST DOBBINS CR TRCM5 3.1/ 3.4/ 4.1 :AUSTIN MN-41 AV NW TURTLE CR HOUM5 2.0/ 2.3/ 2.7 :HOUSTON MN ROOT R LNSM5 3.0/ 3.3/ 3.8 :LANESBORO MN S BR ROOT R LANM5 2.8/ 2.9/ 3.2 :LANSING MN CEDAR R PTNM5 2.9/ 3.2/ 3.9 :PRESTON MN S BR ROOT R RBCM5 3.5/ 3.8/ 4.3 :ROCHESTER MN BEAR CR RCCM5 3.3/ 3.5/ 4.1 :ROCHESTER MN CASCADE CR ROCM5 3.5/ 3.9/ 4.4 :ROCHESTER MN SILVER CR RCSM5 3.5/ 4.0/ 4.5 :HWY 14 ROCHESTER S FK ZUMBRO R RCHM5 3.3/ 3.8/ 4.5 :ROCHESTER MN S FK ZUMBRO R WSPM5 2.8/ 3.0/ 3.6 :WHITEWATER ST.PK MFK WHITEWATER R ZUMM5 3.2/ 4.0/ 4.5 :ZUMBRO FALLS MN ZUMBRO R : : *** WISCONSIN HEADWATER POINTS *** : BTNW3 2.4/ 2.5/ 2.5 :BURTON WI GRANT R DDGW3 3.4/ 3.5/ 3.6 :DODGE WI TREMPEALEAU R GMIW3 3.2/ 3.4/ 3.7 :GAYS MILLS WI KICKAPOO R HILW3 2.1/ 2.2/ 2.4 :HILLSBORO WWTP WI S BR BARABOO R LAFW3 2.8/ 3.0/ 3.1 :LA FARGE WI KICKAPOO R NEIW3 3.2/ 4.0/ 4.5 :NEILLSVILLE WI BLACK R ONTW3 3.3/ 3.3/ 3.5 :ONTARIO WI KICKAPOO R REAW3 2.8/ 2.9/ 3.0 :READSTOWN WI KICKAPOO R RVLW3 2.8/ 2.9/ 3.2 :ROCKVILLE WI 2E PLATTE R SOGW3 2.6/ 2.7/ 2.7 :SOLDIERS GROVE WI KICKAPOO R STEW3 2.9/ 3.0/ 3.1 :STEUBEN WI KICKAPOO R VIOW3 2.6/ 2.7/ 2.7 :VIOLA WI KICKAPOO R .END $$  734 AWUS01 KWNH 210350 FFGMPD GAZ000-TNZ000-ALZ000-210949- Mesoscale Precipitation Discussion 1101 NWS Weather Prediction Center College Park MD 1149 PM EDT Thu Aug 20 2026 Areas affected...portions of northern Alabama into northern Georgia Concerning...Heavy rainfall...Flash flooding possible Valid 210349Z - 210949Z Summary...Isolated flash flood potential exists with a recently developed cluster of convection near the Huntsville area. This convection will slowly migrate eastward while producing areas of 1-1.75 inch/hr rain rates. Discussion...Deep convection has increased in coverage and began to congeal into a cluster near the Huntsville, AL area over the past hour. The storms have formed near a cold front along the TN/AL border and were being supported by weak ascent associated with a mid-level wave over Middle Tennessee and a very moist/unstable airmass along and ahead of the front (2+ inch PW, 3000+ J/kg MLCAPE), supporting efficient rainfall processes beneath the storms. Furthermore, the storms were in an environment characterized by weak steering flow aloft (10-20 knots on average), supporting slow storm motions. The convective cluster was exhibiting signs of congealing over the past 30 minutes or so, with multiple mergers and slow cell movement fostering areas of 1.5+ inch/hr rain rates. Over time, the congealing of this convective cluster should result in gradual east/southeastward propagation toward northern Georgia. Downstream areas contain FFG thresholds of around 1.5-2 inch/hr, which could be exceeded at times given the favorable airmass and slow cell movement. Downstream areas of sensitive terrain or urban land surfaces may also be slightly more susceptible to flash flooding. This risk should exist for at least a few hours tonight -- perhaps through 09Z. Cook ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...BMX...FFC...HUN...MRX... ATTN...RFC...ALR...ORN...NWC... LAT...LON 35088541 34878407 34438365 33768398 33458587 33918739 34908722  468 FOUS71 KRHA 210750 FFHNJ1 HEADWATER STATEMENT FOR NEW JERSEY STREAMS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH06/DC2608210730/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==================== ================== : : NWS BROOKHAVEN SERVICE AREA... : Ramapo River... MAWN4 1.4/ 1.7/ 2.1/ 2.3 :Mahwah (8ft) Ramapo River :MAWN4md 1.7/ 2.0/ 2.5/ 2.9 Mahwah (9) Ramapo River :MAWN4mj 2.7/ 3.1/ 4.1/ 4.7 Mahwah (12) Ramapo River : Hohokus Brook... HOHN4 0.7/ 0.8/ 1.0/ 1.6 :Ho-Ho-Kus (3ft) Hohokus Brook : Saddle River... LODN4 0.1/ 0.1/ 0.1/ 0.1 :Lodi (5.5ft) Saddle River :LODN4md 0.4/ 0.4/ 0.4/ 0.7 Lodi (7) Saddle River :LODN4mj 0.7/ 0.7/ 0.7/ 1.2 Lodi (8) Saddle River : Rahway River... SPGN4 0.3/ 0.3/ 0.3/ 0.4 :Springfield (5.5ft) Rahway River : : NWS MT. HOLLY SERVICE AREA... : PASSAIC BASIN... : Passaic River... CAMN4 2.8/ 2.8/ 2.8/ 3.0 :Chatham (6ft) Passaic River :CAMN4md 4.0/ 4.3/ 5.0/ 5.6 Chatham (7.2) Passaic River :CAMN4mj 4.7/ 5.0/ 5.9/ 6.8 Chatham (8.2) Passaic River : Rockaway River... BOTN4 3.2/ 3.6/ 4.1/ 5.0 :Boonton Abv. (5ft) Rockaway River :BOTN4md 3.7/ 4.2/ 4.9/ 6.1 Boonton Abv. (6) Rockaway River :BOTN4mj 4.0/ 4.6/ 5.4/ 6.7 Boonton Abv. (7) Rockaway River : Whippany River... WHIN4 1.6/ 1.7/ 1.9/ 2.1 :Morristown (6ft) Whippany River : RARITAN BASIN.. : South Branch Raritan River... STTN4 1.8/ 2.0/ 2.5/ 2.9 :Stanton (8ft) S. Br. Raritan River :STTN4md 2.0/ 2.2/ 3.1/ 3.7 Stanton (10) S. Br. Raritan River :STTN4mj 2.2/ 2.5/ 3.7/ 4.4 Stanton (12) S. Br. Raritan River : North Branch Raritan River... RRTN4 1.5/ 1.8/ 2.1/ 2.3 :Raritan (10ft) N. Br. Raritan River :RRTN4md 1.7/ 2.0/ 2.5/ 3.2 Raritan (12) N. Br. Raritan River :RRTN4mj 2.1/ 2.5/ 3.3/ 4.1 Raritan (15) N. Br. Raritan River : Millstone River... BKWN4 2.5/ 2.7/ 3.0/ 3.0 :Blackwells Mills(9ft) Millstone River :BKWN4md 2.5/ 2.8/ 3.1/ 3.1 Blackwells Mills(10) Millstone River :BKWN4mj 2.9/ 3.2/ 3.7/ 4.4 Blackwells Mills(15) Millstone River : DELAWARE BASIN... : Assunpink Creek...TACN4 1.8/ 1.8/ 1.8/ 1.8 :Trenton (8.5ft) Assunpink Creek :TACN4md 1.9/ 1.9/ 2.1/ 2.6 Trenton (9.5) Assunpink Creek :TACN4mj 2.0/ 2.2/ 2.8/ 3.5 Trenton (11) Assunpink Creek .END $$ NNNN $$ NNNN  469 FOUS71 KRHA 210750 FFHPA2 HEADWATER STATEMENT FOR THE DELAWARE AND SUSQUEHANNA BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH06/DC2608210730/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS BINGHAMTON SERVICE AREA... : SUSQUEHANNA BASIN... : Tioughnioga River... CRTN6 2.5/ 2.8/ 3.1/ 3.4 :Cortland (8ft) :CRTN6md 2.6/ 3.0/ 3.9/ 4.2 Cortland (10) :CRTN6mj 2.8/ 3.3/ 4.4/ 4.9 Cortland (12.5) : Chenango River... SHBN6 2.6/ 2.8/ 3.0/ 3.5 :Sherburne (8.5ft) :SHBN6md 2.6/ 2.9/ 3.3/ 4.3 Sherburne (9) :SHBN6mj 2.8/ 3.1/ 3.8/ 4.7 Sherburne (10.6) : Otselic River... CINN6 3.0/ 3.2/ 3.7/ 4.6 :Cincinnatus (9ft) : ...moderate and major flood stages above rating table. : Cohocton River... CMPN6 2.8/ 3.1/ 3.6/ 4.4 :Campbell (8ft) :CMPN6md 3.0/ 3.4/ 4.5/ 5.1 Campbell (10) :CMPN6mj 3.2/ 3.7/ 5.0/ 5.7 Campbell (11) : Canisteo River... WCRN6 2.1/ 2.4/ 3.0/ 3.8 :West Cameron (17ft) :WCRN6md 2.1/ 2.5/ 3.1/ 4.0 West Cameron (18) :WCRN6mj 2.4/ 2.8/ 3.7/ 4.7 West Cameron (21) : Towanda Creek... MONP1 1.7/ 1.9/ 2.3/ 3.0 :Monroeton (15.5ft) :MONP1md 1.8/ 2.0/ 2.6/ 3.3 Monroeton (17) :MONP1mj 2.1/ 2.3/ 3.0/ 3.8 Monroeton (18.5) : Tunkhannock Creek... TNKP1 1.9/ 2.4/ 3.7/ 4.3 :Tunkhannock (11ft) :TNKP1md 2.1/ 2.7/ 4.1/ 5.0 Tunkhannock (14) :TNKP1mj 2.3/ 3.0/ 4.6/ 5.5 Tunkhannock (17) : Lackawanna River... OFRP1 2.2/ 2.7/ 3.3/ 4.5 :Old Forge (11ft) :OFRP1md 2.3/ 2.8/ 3.5/ 4.7 Old Forge (13) :OFRP1mj 2.5/ 3.0/ 3.9/ 5.1 Old Forge (16) : DELAWARE BASIN... : East Branch Delaware River... MRGN6 3.5/ 3.8/ 4.4/ 5.0 :Margaretville (11ft) :MRGN6md 4.2/ 4.6/ 5.4/ 6.1 Margaretville (12) :MRGN6mj 4.9/ 5.5/ 6.5/ 7.6 Margaretville (13) : West Branch Delaware River... WALN6 2.4/ 2.5/ 2.8/ 3.4 :Walton (11.5ft) :WALN6md 2.7/ 3.0/ 3.4/ 3.8 Walton (14) :WALN6mj 3.3/ 3.6/ 4.1/ 4.7 Walton (16) : Beaverkill Creek... CKFN6 1.7/ 1.8/ 2.1/ 2.5 :Cooks Falls (10ft) :CKFN6md 2.4/ 2.7/ 3.4/ 4.4 Cooks Falls (16) :CKFN6mj 2.9/ 3.2/ 4.1/ 5.5 Cooks Falls (18) : Lackawaxen River... HWYP1 2.3/ 2.6/ 3.1/ 3.9 :Hawley (14ft) :HWYP1md 3.0/ 3.4/ 4.1/ 5.2 Hawley (20) :HWYP1mj 3.3/ 3.7/ 4.5/ 5.7 Hawley (22) : : NWS STATE COLLEGE SERVICE AREA... : SUSQUEHANNA BASIN... : Tioga River... MFDP1 1.7/ 2.3/ 3.4/ 4.1 :Mansfield (12ft) :MFDP1md 1.9/ 2.5/ 3.7/ 4.5 Mansfield (13) :MFDP1mj 2.1/ 2.8/ 4.3/ 5.1 Mansfield (14) : Penns Creek... PNCP1 2.4/ 2.7/ 2.8/ 2.9 :Penns Creek (8ft) :PNCP1md 2.5/ 2.9/ 3.2/ 4.0 Penns Creek (10) :PNCP1mj 2.8/ 3.2/ 3.9/ 4.8 Penns Creek (12) : Frankstown Branch Juniata River... WIBP1 1.5/ 1.6/ 1.8/ 1.8 :Williamsburg (12ft) :WIBP1md 1.5/ 1.7/ 1.9/ 1.9 Williamsburg (13) :WIBP1mj 1.6/ 1.7/ 2.1/ 2.3 Williamsburg (15) : Little Juniata River... SPKP1 0.8/ 0.9/ 1.0/ 1.0 :Spruce Creek (8ft) :SPKP1md 0.9/ 1.0/ 1.2/ 1.2 Spruce Creek (10) :SPKP1mj 1.3/ 1.4/ 1.9/ 2.1 Spruce Creek (14) : Aughwick Creek... SLYP1 1.3/ 1.4/ 1.6/ 1.9 :Shirleysburg (10ft) :SLYP1md 1.5/ 1.6/ 1.8/ 2.3 Shirleysburg (12) :SLYP1mj 3.6/ 4.0/ 4.8/ 6.6 Shirleysburg (20) : Sherman Creek... SMDP1 2.0/ 2.4/ 2.8/ 3.4 :Shermans Dale (9ft) :SMDP1md 2.4/ 2.8/ 3.3/ 4.0 Shermans Dale (11) :SMDP1mj 3.7/ 4.4/ 5.3/ 6.1 Shermans Dale (16) : Conodoguinet Creek... HGSP1 3.1/ 3.1/ 3.3/ 3.3 :Hogestown (8ft) :HGSP1md 3.3/ 3.5/ 4.2/ 4.7 Hogestown (10) :HGSP1mj 3.6/ 4.0/ 5.0/ 5.6 Hogestown (12) : Yellow Breeches Creek... CPHP1 1.7/ 2.0/ 2.3/ 3.7 :Camp Hill (7ft) :CPHP1md 1.8/ 2.1/ 2.6/ 4.0 Camp Hill (9) :CPHP1mj 2.3/ 2.7/ 3.6/ 5.1 Camp Hill (13) : Swatara Creek... HTVP1 1.8/ 2.2/ 2.8/ 4.0 :Harper Tavern (9ft) :HTVP1md 2.1/ 2.6/ 3.5/ 4.9 Harper Tavern (12) :HTVP1mj 2.5/ 3.1/ 4.0/ 5.7 Harper Tavern (15) : Conestoga River... LNCP1 1.4/ 1.7/ 1.8/ 2.4 :Lancaster (11ft) :LNCP1md 1.5/ 1.9/ 2.0/ 2.9 Lancaster (13) :LNCP1mj 1.7/ 2.1/ 2.4/ 3.3 Lancaster (15) : DELAWARE BASIN... : Schuylkill River... LGVP1 2.4/ 2.5/ 2.6/ 2.8 :Landingville (8ft) :LGVP1md 3.2/ 3.4/ 3.6/ 4.0 Landingville (12) :LGVP1mj 3.9/ 4.3/ 4.6/ 5.1 Landingville (14) : : NWS MT. HOLLY SERVICE AREA... : DELAWARE BASIN... : Schuylkill River... BREP1 2.8/ 3.6/ 4.4/ 5.7 :Berne (12ft) :BREP1md 3.1/ 4.0/ 5.1/ 6.7 Berne (14) :BREP1mj 3.4/ 4.5/ 5.6/ 7.3 Berne (16) : Bush Kill... SHOP1 2.5/ 3.0/ 3.3/ 3.3 :Shoemakers (6ft) :SHOP1md 2.6/ 3.2/ 3.7/ 4.2 Shoemakers (7) :SHOP1mj 2.8/ 3.4/ 4.2/ 4.8 Shoemakers (8) : Brodhead Creek... MNSP1 1.7/ 2.0/ 2.6/ 3.5 :Minisink Hills(10ft) :MNSP1md 1.8/ 2.2/ 3.0/ 3.9 Minisink Hills(12) :MNSP1mj 2.1/ 2.5/ 3.5/ 4.6 Minisink Hills(15) : Little Lehigh Creek...APAP1 4.1/ 4.5/ 4.9/ 5.8 :Allentown-10th (8ft) :APAP1md 5.1/ 5.5/ 6.1/ 7.4 Allentown-10th (10) :APAP1mj 6.1/ 6.6/ 7.4/ 8.0 Allentown-10th (12) : Perkiomen Creek... GRAP1 1.6/ 2.0/ 2.6/ 3.3 :Graterford (11ft) :GRAP1md 1.8/ 2.2/ 3.0/ 3.6 Graterford (13) :GRAP1mj 2.1/ 2.6/ 3.6/ 4.4 Graterford (16) : Neshaminy Creek... LNGP1 1.8/ 1.8/ 1.8/ 1.8 :Langhorne (9ft) :LNGP1md 2.0/ 2.0/ 2.0/ 2.0 Langhorne (10) :LNGP1mj 2.2/ 2.3/ 2.4/ 2.4 Langhorne (12) : Chester Creek... CHSP1 1.5/ 1.6/ 1.8/ 2.3 :Chester (8ft) :CHSP1md 2.0/ 2.1/ 2.4/ 3.0 Chester (10) :CHSP1mj 2.9/ 3.0/ 3.4/ 4.4 Chester (14) : West Branch Brandywine Creek... MODP1 3.5/ 3.7/ 4.0/ 4.2 :Modena (9ft) :MODP1md 4.0/ 4.3/ 4.7/ 4.9 Modena (10) :MODP1mj 6.5/ 7.0/ 7.4/ 8.0 Modena (12) : East Branch Brandywine Creek... DWNP1 0.7/ 0.7/ 0.7/ 0.8 :Downingtown (7ft) :DWNP1md 1.3/ 1.3/ 1.4/ 1.6 Downingtown (9) :DWNP1mj 2.2/ 2.2/ 2.3/ 2.6 Downingtown (11) : Brandywine Creek... CDFP1 1.8/ 1.8/ 1.8/ 1.8 :Chadds Ford (9ft) :CDFP1md 2.0/ 2.0/ 2.2/ 2.6 Chadds Ford (11) :CDFP1mj 2.2/ 2.3/ 2.8/ 3.7 Chadds Ford (13) : Christina River... CHBD1 1.3/ 1.4/ 1.6/ 2.4 :Coochs Brdg(11ft) :CHBD1md 1.6/ 1.8/ 2.1/ 3.0 Coochs Brdg(12) :CHBD1mj 2.2/ 2.5/ 2.9/ 4.1 Coochs Brdg(13) : White Clay Creek... DPKD1 1.4/ 1.4/ 1.6/ 2.2 :Delaware Pk (13ft) :DPKD1md 2.0/ 2.1/ 2.3/ 3.0 Delaware Pk (15) :DPKD1mj 3.1/ 3.2/ 3.6/ 4.6 Delaware Pk (16.5) : Red Clay Creek... RCCD1 1.6/ 1.8/ 2.0/ 2.5 :Wooddale (7ft) :RCCD1md 2.3/ 2.5/ 2.8/ 3.5 Wooddale (8.5) :RCCD1mj 2.9/ 3.3/ 3.6/ 4.4 Wooddale (10) .END :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS BINGHAMTON SERVICE AREA... .B RHA 260821 Z DH06/DC2608210730/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages : Lackawanna River... ARHP1 3.8/ 3.9/ 4.3/ 5.1 :Archbald (8ft) :ARHP1md 4.4/ 4.5/ 5.0/ 6.0 Archbald (9) :ARHP1mj 5.0/ 5.2/ 5.7/ 7.1 Archbald (10) PKIP1 4.2/ 4.3/ 4.5/ 5.0 :Scranton (12.5ft.) :PKIP1md 4.5/ 4.6/ 4.8/ 5.3 Scranton (14) :PKIP1mj 4.6/ 4.7/ 4.9/ 5.5 Scranton (15) .END : Model-simulated 3-hourly stage forecasts including QPF... .E ARHP1 20260821 DC2608210750/DH09/HGIFX/DIH3/ .E1 1.9/2.0/1.9/1.9/1.9/1.9/1.8/1.8 .E PKIP1 20260821 DC2608210750/DH09/HGIFX/DIH3/ .E1 1.4/1.6/1.5/1.5/1.3/1.2/1.2/1.1 $$ NNNN  470 FOUS71 KRHA 210750 FFHVA2 HEADWATER STATEMENT FOR THE POTOMAC AND JAMES BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH06/DC2608210730/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS STERLING SERVICE AREA... : POTOMAC BASIN... : North Branch Potomac River... KITM2 2.0/ 2.2/ 2.7/ 3.4 :Kitzmiller (9ft) :KITM2md 2.9/ 3.2/ 4.0/ 5.4 Kitzmiller (11) :KITM2mj 4.2/ 4.7/ 6.1/ 8.0 Kitzmiller (13) : Georges Creek... WSTM2 1.2/ 1.4/ 1.6/ 1.9 :Westernport (8ft) :WSTM2md 1.8/ 2.1/ 2.4/ 2.9 Westernport (10) :WSTM2mj 2.5/ 2.8/ 3.3/ 3.8 Westernport (12) : South Branch Potomac River... FKLW2 2.1/ 2.3/ 2.5/ 3.2 :Franklin (7ft) :FKLW2md 2.2/ 2.5/ 2.8/ 3.8 Franklin (9) :FKLW2mj 2.4/ 2.8/ 3.2/ 4.4 Franklin (11) : Opequon Creek... MBGW2 2.5/ 3.2/ 3.7/ 4.8 :Martinsburg (10ft) :MBGW2md 2.7/ 3.4/ 4.0/ 5.6 Martinsburg (12.5) :MBGW2mj 3.1/ 3.9/ 4.8/ 6.5 Martinsburg (15) : South River... WAYV2 3.4/ 4.2/ 5.5/ 7.0 :Waynesboro (9.5ft) :WAYV2md 3.6/ 4.5/ 6.1/ 7.7 Waynesboro (11) :WAYV2mj 4.0/ 4.9/ 6.8/ 8.0 Waynesboro (13) : North Fork Shenandoah River... COOV2 2.4/ 2.7/ 3.6/ 4.3 :Cootes Store (15ft) :COOV2md 2.8/ 3.2/ 4.4/ 5.3 Cootes Store (18) :COOV2mj 3.3/ 3.7/ 5.3/ 6.5 Cootes Store (21) : Antietam Creek... SACM2 2.1/ 2.8/ 3.7/ 5.5 :Sharpsburg (8ft) :SACM2md 2.2/ 3.0/ 4.4/ 6.0 Sharpsburg (10) :SACM2mj 2.4/ 3.3/ 5.2/ 6.8 Sharpsburg (12) : Seneca Creek... DAWM2 2.4/ 2.6/ 3.0/ 3.6 :Dawsonville (7.5ft) :DAWM2md 3.0/ 3.4/ 4.7/ 6.0 Dawsonville (11) :DAWM2mj 5.0/ 5.8/ 7.4/ 8.0 Dawsonville (16) : : NWS BLACKSBURG SERVICE AREA... : Maury River... BVSV2 4.5/ 6.4/ 7.4/ 8.0 :Buena Vista (17ft) :BVSV2cs 4.1/ 5.5/ 7.0/ 8.0 Buena Vista (13) :BVSV2md 4.7/ 6.7/ 7.4/ 8.0 Buena Vista (19) :BVSV2mj 5.0/ 7.0/ 7.4/ 8.0 Buena Vista (21) .END : :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS STERLING SERVICE AREA... : Rock Creek at Sherrill Drive.,Washington DC .B RHA 260821 Z DH06/DC2608210730/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages RCKD2 1.7/ 1.8/ 1.9/ 2.3 :Washington, DC (7ft) :RCKD2md 2.3/ 2.5/ 2.8/ 3.4 Washington, DC (10) :RCKD2mj 3.1/ 3.4/ 3.7/ 4.6 Washington, DC (12) .END : Model-simulated 3-hourly stage forecasts including QPF... .E RCKD2 20260821 DC2608210750/DH09/HGIFX/DIH3/ .E1 2.4/2.3/2.1/2.0/2.0/2.0/2.0/2.0 $$ NNNN  953 FOUS71 KRHA 211350 FFHNJ1 HEADWATER STATEMENT FOR NEW JERSEY STREAMS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH12/DC2608211330/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==================== ================== : : NWS BROOKHAVEN SERVICE AREA... : Ramapo River... MAWN4 1.7/ 1.9/ 2.2/ 2.5 :Mahwah (8ft) Ramapo River :MAWN4md 1.9/ 2.2/ 2.7/ 3.1 Mahwah (9) Ramapo River :MAWN4mj 2.9/ 3.3/ 4.3/ 4.8 Mahwah (12) Ramapo River : Hohokus Brook... HOHN4 0.9/ 1.0/ 1.4/ 2.2 :Ho-Ho-Kus (3ft) Hohokus Brook : Saddle River... LODN4 0.7/ 0.7/ 0.8/ 1.2 :Lodi (5.5ft) Saddle River :LODN4md 1.1/ 1.1/ 1.3/ 1.9 Lodi (7) Saddle River :LODN4mj 1.4/ 1.4/ 1.6/ 2.4 Lodi (8) Saddle River : Rahway River... SPGN4 1.1/ 1.1/ 1.2/ 1.5 :Springfield (5.5ft) Rahway River : : NWS MT. HOLLY SERVICE AREA... : PASSAIC BASIN... : Passaic River... CAMN4 2.7/ 2.7/ 3.1/ 3.4 :Chatham (6ft) Passaic River :CAMN4md 4.3/ 4.5/ 5.1/ 5.8 Chatham (7.2) Passaic River :CAMN4mj 4.9/ 5.2/ 6.1/ 6.9 Chatham (8.2) Passaic River : Rockaway River... BOTN4 3.3/ 3.7/ 4.0/ 4.9 :Boonton Abv. (5ft) Rockaway River :BOTN4md 3.7/ 4.3/ 4.9/ 6.0 Boonton Abv. (6) Rockaway River :BOTN4mj 4.1/ 4.6/ 5.3/ 6.7 Boonton Abv. (7) Rockaway River : Whippany River... WHIN4 1.6/ 1.7/ 2.0/ 2.1 :Morristown (6ft) Whippany River : RARITAN BASIN.. : South Branch Raritan River... STTN4 1.9/ 2.1/ 2.6/ 2.7 :Stanton (8ft) S. Br. Raritan River :STTN4md 2.1/ 2.3/ 3.1/ 3.6 Stanton (10) S. Br. Raritan River :STTN4mj 2.3/ 2.6/ 3.7/ 4.4 Stanton (12) S. Br. Raritan River : North Branch Raritan River... RRTN4 1.7/ 1.9/ 2.2/ 2.4 :Raritan (10ft) N. Br. Raritan River :RRTN4md 1.9/ 2.1/ 2.6/ 3.3 Raritan (12) N. Br. Raritan River :RRTN4mj 2.2/ 2.6/ 3.4/ 4.2 Raritan (15) N. Br. Raritan River : Millstone River... BKWN4 2.6/ 2.8/ 3.1/ 3.1 :Blackwells Mills(9ft) Millstone River :BKWN4md 2.7/ 2.9/ 3.2/ 3.2 Blackwells Mills(10) Millstone River :BKWN4mj 3.0/ 3.3/ 3.8/ 4.5 Blackwells Mills(15) Millstone River : DELAWARE BASIN... : Assunpink Creek...TACN4 2.0/ 2.1/ 2.4/ 2.9 :Trenton (8.5ft) Assunpink Creek :TACN4md 2.1/ 2.3/ 2.9/ 3.5 Trenton (9.5) Assunpink Creek :TACN4mj 2.3/ 2.6/ 3.4/ 4.0 Trenton (11) Assunpink Creek .END $$ NNNN $$ NNNN  954 FOUS71 KRHA 211350 FFHPA2 HEADWATER STATEMENT FOR THE DELAWARE AND SUSQUEHANNA BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH12/DC2608211330/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS BINGHAMTON SERVICE AREA... : SUSQUEHANNA BASIN... : Tioughnioga River... CRTN6 2.5/ 2.7/ 3.1/ 3.4 :Cortland (8ft) :CRTN6md 2.6/ 2.9/ 3.8/ 4.2 Cortland (10) :CRTN6mj 2.8/ 3.3/ 4.3/ 4.9 Cortland (12.5) : Chenango River... SHBN6 2.5/ 2.8/ 2.9/ 3.5 :Sherburne (8.5ft) :SHBN6md 2.6/ 2.9/ 3.2/ 4.3 Sherburne (9) :SHBN6mj 2.7/ 3.0/ 3.7/ 4.6 Sherburne (10.6) : Otselic River... CINN6 2.9/ 3.2/ 3.6/ 4.5 :Cincinnatus (9ft) : ...moderate and major flood stages above rating table. : Cohocton River... CMPN6 2.8/ 3.1/ 3.6/ 4.3 :Campbell (8ft) :CMPN6md 3.0/ 3.3/ 4.4/ 5.0 Campbell (10) :CMPN6mj 3.1/ 3.6/ 5.0/ 5.7 Campbell (11) : Canisteo River... WCRN6 2.0/ 2.3/ 2.9/ 3.7 :West Cameron (17ft) :WCRN6md 2.1/ 2.4/ 3.1/ 3.9 West Cameron (18) :WCRN6mj 2.4/ 2.7/ 3.6/ 4.7 West Cameron (21) : Towanda Creek... MONP1 1.7/ 1.8/ 2.3/ 2.9 :Monroeton (15.5ft) :MONP1md 1.8/ 2.0/ 2.5/ 3.2 Monroeton (17) :MONP1mj 2.0/ 2.3/ 2.9/ 3.8 Monroeton (18.5) : Tunkhannock Creek... TNKP1 1.9/ 2.4/ 3.6/ 4.2 :Tunkhannock (11ft) :TNKP1md 2.0/ 2.6/ 4.0/ 4.9 Tunkhannock (14) :TNKP1mj 2.3/ 2.9/ 4.5/ 5.5 Tunkhannock (17) : Lackawanna River... OFRP1 2.2/ 2.6/ 3.2/ 4.4 :Old Forge (11ft) :OFRP1md 2.3/ 2.8/ 3.5/ 4.7 Old Forge (13) :OFRP1mj 2.5/ 3.0/ 3.8/ 5.1 Old Forge (16) : DELAWARE BASIN... : East Branch Delaware River... MRGN6 3.5/ 3.9/ 4.5/ 5.0 :Margaretville (11ft) :MRGN6md 4.2/ 4.6/ 5.4/ 6.2 Margaretville (12) :MRGN6mj 4.9/ 5.5/ 6.5/ 7.6 Margaretville (13) : West Branch Delaware River... WALN6 2.4/ 2.6/ 2.8/ 3.4 :Walton (11.5ft) :WALN6md 2.8/ 3.0/ 3.4/ 3.9 Walton (14) :WALN6mj 3.3/ 3.6/ 4.1/ 4.7 Walton (16) : Beaverkill Creek... CKFN6 1.7/ 1.8/ 2.1/ 2.6 :Cooks Falls (10ft) :CKFN6md 2.5/ 2.7/ 3.5/ 4.5 Cooks Falls (16) :CKFN6mj 2.9/ 3.2/ 4.2/ 5.5 Cooks Falls (18) : Lackawaxen River... HWYP1 2.3/ 2.6/ 3.2/ 4.0 :Hawley (14ft) :HWYP1md 3.0/ 3.4/ 4.2/ 5.3 Hawley (20) :HWYP1mj 3.3/ 3.7/ 4.6/ 5.8 Hawley (22) : : NWS STATE COLLEGE SERVICE AREA... : SUSQUEHANNA BASIN... : Tioga River... MFDP1 1.7/ 2.3/ 3.3/ 4.1 :Mansfield (12ft) :MFDP1md 1.9/ 2.5/ 3.7/ 4.5 Mansfield (13) :MFDP1mj 2.0/ 2.8/ 4.2/ 5.0 Mansfield (14) : Penns Creek... PNCP1 2.5/ 2.7/ 2.8/ 2.8 :Penns Creek (8ft) :PNCP1md 2.6/ 2.9/ 3.2/ 3.9 Penns Creek (10) :PNCP1mj 2.8/ 3.2/ 3.9/ 4.7 Penns Creek (12) : Frankstown Branch Juniata River... WIBP1 1.5/ 1.6/ 1.9/ 1.9 :Williamsburg (12ft) :WIBP1md 1.6/ 1.7/ 1.9/ 1.9 Williamsburg (13) :WIBP1mj 1.6/ 1.8/ 2.1/ 2.3 Williamsburg (15) : Little Juniata River... SPKP1 1.0/ 1.0/ 1.2/ 1.2 :Spruce Creek (8ft) :SPKP1md 1.1/ 1.2/ 1.4/ 1.6 Spruce Creek (10) :SPKP1mj 1.5/ 1.6/ 2.1/ 2.4 Spruce Creek (14) : Aughwick Creek... SLYP1 1.4/ 1.5/ 1.6/ 1.9 :Shirleysburg (10ft) :SLYP1md 1.6/ 1.7/ 1.9/ 2.4 Shirleysburg (12) :SLYP1mj 3.7/ 4.1/ 4.8/ 6.6 Shirleysburg (20) : Sherman Creek... SMDP1 2.1/ 2.4/ 2.9/ 3.5 :Shermans Dale (9ft) :SMDP1md 2.4/ 2.9/ 3.4/ 4.1 Shermans Dale (11) :SMDP1mj 3.8/ 4.4/ 5.4/ 6.2 Shermans Dale (16) : Conodoguinet Creek... HGSP1 3.1/ 3.2/ 3.3/ 3.3 :Hogestown (8ft) :HGSP1md 3.3/ 3.6/ 4.3/ 4.8 Hogestown (10) :HGSP1mj 3.6/ 4.1/ 5.0/ 5.6 Hogestown (12) : Yellow Breeches Creek... CPHP1 1.7/ 2.0/ 2.4/ 3.7 :Camp Hill (7ft) :CPHP1md 1.8/ 2.2/ 2.6/ 4.0 Camp Hill (9) :CPHP1mj 2.3/ 2.7/ 3.7/ 5.2 Camp Hill (13) : Swatara Creek... HTVP1 1.9/ 2.3/ 2.8/ 4.0 :Harper Tavern (9ft) :HTVP1md 2.2/ 2.7/ 3.5/ 5.0 Harper Tavern (12) :HTVP1mj 2.6/ 3.2/ 4.1/ 5.8 Harper Tavern (15) : Conestoga River... LNCP1 1.5/ 1.7/ 1.8/ 1.8 :Lancaster (11ft) :LNCP1md 1.6/ 1.9/ 2.0/ 2.7 Lancaster (13) :LNCP1mj 1.8/ 2.1/ 2.3/ 3.2 Lancaster (15) : DELAWARE BASIN... : Schuylkill River... LGVP1 2.5/ 2.6/ 2.7/ 2.9 :Landingville (8ft) :LGVP1md 3.3/ 3.5/ 3.7/ 4.1 Landingville (12) :LGVP1mj 4.0/ 4.4/ 4.7/ 5.2 Landingville (14) : : NWS MT. HOLLY SERVICE AREA... : DELAWARE BASIN... : Schuylkill River... BREP1 2.8/ 3.7/ 4.6/ 5.9 :Berne (12ft) :BREP1md 3.1/ 4.1/ 5.2/ 6.9 Berne (14) :BREP1mj 3.5/ 4.6/ 5.7/ 7.5 Berne (16) : Bush Kill... SHOP1 2.5/ 3.1/ 3.4/ 3.4 :Shoemakers (6ft) :SHOP1md 2.7/ 3.3/ 3.9/ 4.4 Shoemakers (7) :SHOP1mj 2.9/ 3.5/ 4.4/ 4.9 Shoemakers (8) : Brodhead Creek... MNSP1 1.7/ 2.0/ 2.7/ 3.5 :Minisink Hills(10ft) :MNSP1md 1.8/ 2.2/ 3.0/ 4.0 Minisink Hills(12) :MNSP1mj 2.1/ 2.5/ 3.5/ 4.7 Minisink Hills(15) : Little Lehigh Creek...APAP1 4.2/ 4.5/ 5.0/ 5.9 :Allentown-10th (8ft) :APAP1md 5.1/ 5.5/ 6.2/ 7.4 Allentown-10th (10) :APAP1mj 6.1/ 6.6/ 7.4/ 8.0 Allentown-10th (12) : Perkiomen Creek... GRAP1 1.6/ 2.0/ 2.6/ 3.3 :Graterford (11ft) :GRAP1md 1.8/ 2.2/ 3.1/ 3.7 Graterford (13) :GRAP1mj 2.1/ 2.6/ 3.6/ 4.4 Graterford (16) : Neshaminy Creek... LNGP1 2.1/ 2.1/ 2.1/ 2.1 :Langhorne (9ft) :LNGP1md 2.4/ 2.4/ 2.4/ 2.4 Langhorne (10) :LNGP1mj 2.5/ 2.7/ 3.0/ 3.1 Langhorne (12) : Chester Creek... CHSP1 1.6/ 1.6/ 1.9/ 2.4 :Chester (8ft) :CHSP1md 2.1/ 2.1/ 2.5/ 3.1 Chester (10) :CHSP1mj 2.9/ 3.1/ 3.5/ 4.5 Chester (14) : West Branch Brandywine Creek... MODP1 3.5/ 3.7/ 4.0/ 4.2 :Modena (9ft) :MODP1md 4.0/ 4.3/ 4.7/ 4.9 Modena (10) :MODP1mj 6.5/ 7.0/ 7.4/ 8.0 Modena (12) : East Branch Brandywine Creek... DWNP1 0.7/ 0.8/ 0.8/ 0.8 :Downingtown (7ft) :DWNP1md 1.4/ 1.4/ 1.5/ 1.6 Downingtown (9) :DWNP1mj 2.2/ 2.3/ 2.4/ 2.7 Downingtown (11) : Brandywine Creek... CDFP1 2.0/ 2.0/ 2.0/ 2.0 :Chadds Ford (9ft) :CDFP1md 2.1/ 2.2/ 2.4/ 3.0 Chadds Ford (11) :CDFP1mj 2.3/ 2.4/ 3.0/ 3.9 Chadds Ford (13) : Christina River... CHBD1 1.4/ 1.5/ 1.7/ 2.5 :Coochs Brdg(11ft) :CHBD1md 1.7/ 1.9/ 2.2/ 3.2 Coochs Brdg(12) :CHBD1mj 2.3/ 2.6/ 3.0/ 4.3 Coochs Brdg(13) : White Clay Creek... DPKD1 1.4/ 1.5/ 1.7/ 2.3 :Delaware Pk (13ft) :DPKD1md 2.1/ 2.2/ 2.4/ 3.1 Delaware Pk (15) :DPKD1mj 3.1/ 3.3/ 3.6/ 4.7 Delaware Pk (16.5) : Red Clay Creek... RCCD1 1.7/ 1.9/ 2.2/ 2.7 :Wooddale (7ft) :RCCD1md 2.4/ 2.7/ 3.0/ 3.6 Wooddale (8.5) :RCCD1mj 3.1/ 3.4/ 3.8/ 4.6 Wooddale (10) .END :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS BINGHAMTON SERVICE AREA... .B RHA 260821 Z DH12/DC2608211330/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages : Lackawanna River... ARHP1 3.8/ 3.9/ 4.3/ 5.1 :Archbald (8ft) :ARHP1md 4.4/ 4.5/ 5.0/ 6.0 Archbald (9) :ARHP1mj 5.0/ 5.2/ 5.7/ 7.1 Archbald (10) PKIP1 4.2/ 4.3/ 4.5/ 5.0 :Scranton (12.5ft.) :PKIP1md 4.5/ 4.6/ 4.8/ 5.3 Scranton (14) :PKIP1mj 4.7/ 4.8/ 4.9/ 5.5 Scranton (15) .END : Model-simulated 3-hourly stage forecasts including QPF... .E ARHP1 20260821 DC2608211350/DH15/HGIFX/DIH3/ .E1 1.9/1.9/1.9/1.9/1.8/1.8/1.8/1.8 .E PKIP1 20260821 DC2608211350/DH15/HGIFX/DIH3/ .E1 1.5/1.5/1.3/1.2/1.2/1.1/1.1/1.1 $$ NNNN  956 FOUS71 KRHA 211350 FFHVA2 HEADWATER STATEMENT FOR THE POTOMAC AND JAMES BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 930 AM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH12/DC2608211330/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS STERLING SERVICE AREA... : POTOMAC BASIN... : North Branch Potomac River... KITM2 2.1/ 2.3/ 2.7/ 3.5 :Kitzmiller (9ft) :KITM2md 2.9/ 3.2/ 4.0/ 5.4 Kitzmiller (11) :KITM2mj 4.3/ 4.8/ 6.2/ 8.0 Kitzmiller (13) : Georges Creek... WSTM2 1.2/ 1.4/ 1.6/ 1.9 :Westernport (8ft) :WSTM2md 1.9/ 2.1/ 2.5/ 2.9 Westernport (10) :WSTM2mj 2.5/ 2.9/ 3.3/ 3.9 Westernport (12) : South Branch Potomac River... FKLW2 2.1/ 2.3/ 2.6/ 3.3 :Franklin (7ft) :FKLW2md 2.3/ 2.6/ 2.8/ 3.8 Franklin (9) :FKLW2mj 2.5/ 2.9/ 3.2/ 4.5 Franklin (11) : Opequon Creek... MBGW2 2.5/ 3.3/ 3.7/ 4.8 :Martinsburg (10ft) :MBGW2md 2.7/ 3.5/ 4.0/ 5.6 Martinsburg (12.5) :MBGW2mj 3.1/ 3.9/ 4.8/ 6.5 Martinsburg (15) : South River... WAYV2 3.5/ 4.2/ 5.6/ 7.1 :Waynesboro (9.5ft) :WAYV2md 3.7/ 4.5/ 6.1/ 7.7 Waynesboro (11) :WAYV2mj 4.0/ 5.0/ 6.8/ 8.0 Waynesboro (13) : North Fork Shenandoah River... COOV2 2.4/ 2.8/ 3.6/ 4.4 :Cootes Store (15ft) :COOV2md 2.8/ 3.2/ 4.4/ 5.4 Cootes Store (18) :COOV2mj 3.3/ 3.8/ 5.3/ 6.5 Cootes Store (21) : Antietam Creek... SACM2 2.2/ 2.9/ 3.8/ 5.6 :Sharpsburg (8ft) :SACM2md 2.3/ 3.0/ 4.5/ 6.1 Sharpsburg (10) :SACM2mj 2.4/ 3.3/ 5.2/ 6.9 Sharpsburg (12) : Seneca Creek... DAWM2 2.5/ 2.6/ 3.0/ 3.7 :Dawsonville (7.5ft) :DAWM2md 3.0/ 3.5/ 4.7/ 6.0 Dawsonville (11) :DAWM2mj 5.0/ 5.9/ 7.4/ 8.0 Dawsonville (16) : : NWS BLACKSBURG SERVICE AREA... : Maury River... BVSV2 4.5/ 6.4/ 7.4/ 8.0 :Buena Vista (17ft) :BVSV2cs 4.1/ 5.5/ 7.0/ 8.0 Buena Vista (13) :BVSV2md 4.8/ 6.7/ 7.4/ 8.0 Buena Vista (19) :BVSV2mj 5.0/ 7.0/ 7.4/ 8.0 Buena Vista (21) .END : :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS STERLING SERVICE AREA... : Rock Creek at Sherrill Drive.,Washington DC .B RHA 260821 Z DH12/DC2608211330/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages RCKD2 1.7/ 1.8/ 2.0/ 2.4 :Washington, DC (7ft) :RCKD2md 2.3/ 2.6/ 2.9/ 3.5 Washington, DC (10) :RCKD2mj 3.1/ 3.4/ 3.8/ 4.6 Washington, DC (12) .END : Model-simulated 3-hourly stage forecasts including QPF... .E RCKD2 20260821 DC2608211350/DH15/HGIFX/DIH3/ .E1 2.1/2.0/2.0/2.0/2.0/2.0/2.0/2.3 $$ NNNN  329 FOUS73 KMSR 211400 FFHMKX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 MILWAUKEE HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** WISCONSIN HEADWATER POINTS *** : AFTW3 2.6/ 3.0/ 3.6 :AFTON WI ROCK R BCHW3 1.9/ 2.0/ 2.4 :BLANCHARDVILLE WI E BR PECATONICA R BUNW3 2.6/ 2.9/ 3.3 :BUNCOMBE WI GALENA R DARW3 2.4/ 2.6/ 3.3 :DARLINGTON WI PECATONICA R MTNW3 1.8/ 2.0/ 3.0 :MARTINTOWN WI PECATONICA R MAZW3 2.7/ 2.8/ 3.4 :MAZOMANIE WI BLACK EARTH CR KINW3 3.3/ 3.9/ 4.5 :MILWAUKEE WI KINNICKINNIC R SEBW3 2.9/ 3.1/ 3.8 :SHEBOYGAN WI SHEBOYGAN R WKEW3 3.5/ 3.7/ 3.7 :WAUKESHA WI FOX R WWTW3 3.5/ 3.9/ 4.2 :WAUWATOSA WI MENOMONEE R BLOW3 1.9/ 2.0/ 2.3 :BELOIT WI TURTLE CR MFSW3 0.5/ 1.0/ 1.0 :MENOMONEE FALLS WI MENOMONEE R OAKW3 2.4/ 2.6/ 3.0 :SOUTH MILWAUKEE OAK CR .END $$  331 FOUS73 KMSR 211400 FFHFGF HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 GRAND FORKS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : CSRM5 3.5/ 3.9/ 4.1 :CAMPBELL MN 1W SO FK RABBIT R MALM5 3.5/ 3.8/ 4.5 :MALUNG MN 2NW ROSEAU R BLO SO FK : : *** NORTH DAKOTA HEADWATER POINTS *** : DWGN8 3.5/ 4.0/ 4.5 :DWIGHT ND 1NE ANTELOPE CR HGRN8 3.5/ 4.0/ 4.5 :HILLSBORO ND GOOSE R LTRN8 2.5/ 2.7/ 2.9 :LARIMORE ND 5ENE TURTLE R .END $$  332 FOUS73 KMSR 211400 FFHMPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 TWIN CITIES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : SNCM5 2.4/ 2.6/ 2.9 :JORDAN MN SAND CR PNLM5 3.0/ 3.6/ 4.5 :PINE ISLAND MN MID FK ZUMBRO R PILM5 3.5/ 4.0/ 4.5 :PINE ISLAND MN N B MID FK ZUMBRO R WGOM5 3.5/ 4.0/ 4.5 :WANAMINGO MN NO FK ZUMBRO R .END $$  333 FOUS73 KMSR 211400 FFHILX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 LINCOLN HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : BMII2 3.5/ 4.0/ 4.5 :BLOOMINGTON IL SUGAR CR RLLI2 0.5/ 1.0/ 1.0 :ROWELL IL SALT CR .END $$  334 FOUS73 KMSR 211400 FFHLOT HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 CHICAGO HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : NBPI2 2.5/ 2.5/ 2.8 :CHICAGO IL N BR CHICAGO R CDCI2 0.9/ 1.2/ 1.4 :CHICAGO HEIGHTS IL DEER CR DRFI2 2.3/ 2.7/ 3.7 :DEERFIELD IL N BR CHICAGO R DEKI2 3.5/ 4.0/ 4.5 :DE KALB IL S BR KISHWAUKEE R DSPI2 2.9/ 3.0/ 3.1 :DES PLAINES IL DES PLAINES R WLRI2 2.9/ 3.3/ 3.7 :DES PLAINES IL WELLER CR EMHI2 2.6/ 3.0/ 3.4 :ELMHURST IL SALT CR FLSI2 1.0/ 1.3/ 1.6 :FLOSSMOOR IL BUTTERFIELD CR GLWI2 1.3/ 1.7/ 2.1 :GLENWOOD IL THORN CR GUNI2 2.3/ 2.3/ 2.3 :GURNEE IL DES PLAINES R JHCI2 2.3/ 2.4/ 2.7 :JOLIET IL HICKORY CR LAFI2 2.3/ 2.7/ 3.7 :LAKE FOREST IL SKOKIE R NILI2 3.4/ 4.0/ 4.5 :NILES IL N BR CHICAGO R NBRI2 3.5/ 4.0/ 4.5 :NORTHBROOK IL W FK N BR CHICAGO R OAKI2 2.9/ 2.9/ 3.4 :OAK FOREST IL MIDLOTHIAN CR MCDI2 3.2/ 3.5/ 3.9 :PROSPECT HTS IL MCDONALD CR ALPI2 1.8/ 1.9/ 2.1 :ROCKFORD IL ALPINE DAM-KEITH CR LEVI2 2.1/ 2.5/ 2.9 :ROCKFORD IL LEVINGS LAKE PPLI2 2.2/ 2.6/ 3.2 :ROCKFORD IL PAGE PARK LAKE ROLI2 2.8/ 3.2/ 3.6 :ROLLING MEADOWS IL SALT CR SCHI2 3.5/ 3.9/ 4.5 :ST CHARLES IL FERSON CR SORI2 3.4/ 3.4/ 3.6 :SHOREWOOD IL DU PAGE R THNI2 1.1/ 1.1/ 1.1 :THORNTON IL THORN CR WHEI2 2.8/ 3.0/ 3.3 :WHEELING IL BUFFALO CR WLSI2 3.5/ 4.0/ 4.5 :WILLOW SPRINGS IL FLAG CR YRKI2 2.5/ 2.6/ 2.6 :YORKVILLE IL BLACKBERRY CR : : *** INDIANA HEADWATER POINTS *** : HDDI3 3.5/ 4.0/ 4.4 :DYER IN HART DITCH MNTI3 3.3/ 3.3/ 3.3 :MUNSTER IN HART DITCH LCMI3 2.5/ 2.5/ 2.5 :MUNSTER IN LITTLE CALUMET R PRTI3 1.9/ 1.9/ 1.8 :PORTER IN LITTLE CALUMET R .END $$  335 FOUS73 KMSR 211400 FFHLSX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 ST LOUIS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MISSOURI HEADWATER POINTS *** : EWNM7 2.9/ 3.2/ 3.6 :EWING MO 5E NORTH FABIUS R EWMM7 2.9/ 3.2/ 3.6 :EWING MO 1NNE MIDDLE FABIUS R PALM7 1.7/ 1.8/ 2.2 :PALMYRA MO NORTH R TAYM7 1.6/ 2.1/ 2.7 :TAYLOR MO S FABIUS R PMZM7 2.2/ 2.5/ 2.9 :HOLLIDAY MO 2N MI FK SALT R TRYM7 1.5/ 1.6/ 1.8 :TROY MO CUIVRE R DRCM7 1.8/ 1.9/ 2.1 :ST PETERS MO DARDENNE CR LSLM7 1.9/ 2.2/ 2.5 :LAKE SAINT LOUIS PERUQUE CR - ABOVE LSTM7 1.5/ 1.7/ 1.9 :LAKE ST LOUIS MO PERUQUE CR CSNM7 1.3/ 1.4/ 1.5 :COOK STATION MO 1N MERAMEC R SEEM7 1.2/ 1.5/ 1.8 :STEELVILLE MO 2N MERAMEC R UNNM7 3.1/ 3.3/ 3.5 :UNION MO BOURBEUSE R BYRM7 2.6/ 3.0/ 3.5 :BYRNESVILLE MO 2NNE BIG R .END $$  342 FOUS73 KMSR 211400 FFHARX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 LA CROSSE HYDRLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : DEHI4 3.5/ 4.0/ 4.5 :DECORAH IA UPPER IOWA R DCHI4 2.7/ 3.0/ 3.5 :DORCHESTER IA UPPER IOWA R GRBI4 2.2/ 2.4/ 2.6 :GARBER IA TURKEY R : : *** MINNESOTA HEADWATER POINTS *** : ASTM5 2.3/ 2.6/ 2.9 :AUSTIN WWTP MN CEDAR R DOBM5 2.7/ 2.9/ 3.1 :AUSTIN MN-21ST DOBBINS CR TRCM5 3.2/ 3.4/ 4.1 :AUSTIN MN-41 AV NW TURTLE CR HOUM5 2.1/ 2.3/ 2.8 :HOUSTON MN ROOT R LNSM5 3.0/ 3.4/ 3.8 :LANESBORO MN S BR ROOT R LANM5 2.8/ 2.9/ 3.2 :LANSING MN CEDAR R PTNM5 3.0/ 3.2/ 4.0 :PRESTON MN S BR ROOT R RBCM5 3.5/ 3.8/ 4.3 :ROCHESTER MN BEAR CR RCCM5 3.2/ 3.5/ 4.1 :ROCHESTER MN CASCADE CR ROCM5 3.5/ 3.9/ 4.5 :ROCHESTER MN SILVER CR RCSM5 3.5/ 4.0/ 4.5 :HWY 14 ROCHESTER S FK ZUMBRO R RCHM5 3.3/ 3.8/ 4.5 :ROCHESTER MN S FK ZUMBRO R WSPM5 2.8/ 3.0/ 3.6 :WHITEWATER ST.PK MFK WHITEWATER R ZUMM5 3.2/ 4.0/ 4.5 :ZUMBRO FALLS MN ZUMBRO R : : *** WISCONSIN HEADWATER POINTS *** : BTNW3 2.4/ 2.5/ 2.5 :BURTON WI GRANT R DDGW3 3.4/ 3.5/ 3.6 :DODGE WI TREMPEALEAU R GMIW3 3.2/ 3.4/ 3.7 :GAYS MILLS WI KICKAPOO R HILW3 2.2/ 2.3/ 2.5 :HILLSBORO WWTP WI S BR BARABOO R LAFW3 2.9/ 3.0/ 3.2 :LA FARGE WI KICKAPOO R NEIW3 2.6/ 3.4/ 4.2 :NEILLSVILLE WI BLACK R ONTW3 3.3/ 3.4/ 3.5 :ONTARIO WI KICKAPOO R REAW3 2.8/ 3.0/ 3.1 :READSTOWN WI KICKAPOO R RVLW3 2.8/ 3.0/ 3.2 :ROCKVILLE WI 2E PLATTE R SOGW3 2.7/ 2.7/ 2.8 :SOLDIERS GROVE WI KICKAPOO R STEW3 2.9/ 3.0/ 3.1 :STEUBEN WI KICKAPOO R VIOW3 2.6/ 2.7/ 2.8 :VIOLA WI KICKAPOO R .END $$  343 FOUS73 KMSR 211400 FFHAPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 GAYLORD HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MICHIGAN HEADWATER POINTS *** : BVTM4 3.5/ 4.0/ 4.5 :BEAVERTON MI TOBACCO R MYFM4 3.5/ 4.0/ 4.3 :MAYFIELD MI BOARDMAN R RUDM4 3.5/ 4.0/ 4.5 :RUDYARD MI PINE RIVER .END $$  344 FOUS73 KMSR 211400 FFHDMX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 900 AM CDT FRI AUG 21 2026 DES MOINES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH12/DC2608211400 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : AKWI4 2.7/ 2.8/ 2.9 :ACKWORTH IA SOUTH R AMWI4 2.8/ 2.8/ 2.9 :AMES IA IOWAY CR BSSI4 2.7/ 2.8/ 3.0 :BUSSEY IA CEDAR CR DFMI4 3.2/ 3.3/ 3.4 :DSM-EASTON FOUR MILE CR CLVI4 2.5/ 2.8/ 3.0 :CLIVE I-80/35 WALNUT CR DOSI4 2.7/ 2.8/ 3.1 :DSM-63RD ST WALNUT CR MCWI4 3.4/ 3.6/ 4.1 :MASON CITY IA WINNEBAGO R .END $$  540 FOUS62 KALR 211420 FFGSJU COUNTY FLASH FLOOD GUIDANCE...PUERTO RICO NATIONAL WEATHER SERVICE SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA 1019 AM EDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN FORECAST ZONES. LOWER AMOUNTS MAY CAUSE FLASH FLOODING IN URBAN OR MOUNTAINOUS AREAS. .B ALR 20260821 Z DH12/DC202608211419 /DUE/PPHCF/PPTCF/PPQCF :IDENTIFIERS ARE 2-LETTER STATE, Z FOR ZONE, 3-DIGIT ZONE NUMBER : :IDENT 1HR 3HR 6HR ZONE NAME :======= ==== ==== ==== ==================== PRZ001 1.9/ 3.5/ 4.8 PRZ002 1.9/ 3.5/ 4.8 PRZ003 1.9/ 3.2/ 4.6 PRZ004 1.9/ 3.2/ 4.6 PRZ005 1.5/ 2.1/ 2.7 PRZ006 1.5/ 2.1/ 2.7 PRZ007 1.5/ 2.1/ 2.7 PRZ008 1.5/ 2.1/ 2.7 PRZ009 1.5/ 2.1/ 2.7 PRZ010 1.5/ 2.1/ 2.7 PRZ011 1.5/ 2.1/ 2.7 PRZ012 2.0/ 3.2/ 4.5 PRZ013 2.0/ 3.2/ 4.5 VIZ001 2.1/ 3.2/ 4.6 VIZ002 2.1/ 3.2/ 4.6 .END $$ S.E.R.F.C. 770-486-0028 or 770-282-2112 Regular Hours 6am-10pm Eastern Time After Hours Please Follow Callback Instructions  072 FGUS74 KORN 211433 FFHMRX HEADWATER GUIDANCE FOR HSA.....MORRISTOWN TN NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....TENNESSEE : DOET1 3.0/ 3.4/ 3.9/ 4.7/ 5.8 :ELIZABETHTON, TN DOE R. RMTT1 3.3/ 3.7/ 5.5/ 5.5/ 5.9 :ROAN MOUNTAIN, TN DOE R. : :.....VIRGINIA : CLVV2 2.3/ 2.5/ 2.7/ 3.2/ 4.1 :CLEVELAND, VA CLINCH R. .END $$  067 FOUS74 KORN 211433 FFHFFC HEADWATER GUIDANCE FOR HSA.....ATLANTA GA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....GEORGIA : ENGG1 1.8/ 1.9/ 2.1 :NEW ENGLAND, GA LOOKOUT CREEK HWEG1 3.5/ 3.6/ 4.0 :HIAWASSEE, GA HIAWASSEE R. .END $$  069 FOUS74 KORN 211433 FFHHUN HEADWATER GUIDANCE FOR HSA.....HUNTSVILLE AL NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....ALABAMA : FRYA1 2.9/ 3.1/ 3.4 :FARLEY, AL ALDRIDGE CREEK SHEA1 2.8/ 2.9/ 3.1 :SHERWOOD, AL ALDRIDGE CREEK ATNA1 3.5/ 5.0/ 5.5 :ATHENS, AL LIMESTONE CREEK BPPA1 3.5/ 4.0/ 4.3 :BUCKS POCKET, AL S. SAUTY CREEK MADA1 3.0/ 3.3/ 3.6 :MADISON, AL INDIAN CREEK .END $$  070 FOUS74 KORN 211433 FFHJAN HEADWATER GUIDANCE FOR HSA.....JACKSON MS NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....MISSISSIPPI : MEIM6 3.5/ 5.0/ 5.5 :MERIDIAN, MS SOWASHEE CREEK JCCM6 3.5/ 5.0/ 5.5 :JACKSON, MS CANY CREEK JHMM6 3.5/ 5.0/ 5.5 :JACKSON, MS HANGING MOSS CREEK LYNM6 3.5/ 5.0/ 5.5 :JACKSON, MS LYNCH CREEK TOWM6 3.5/ 5.0/ 5.5 :JACKSON, MS TOWN CREEK UBCM6 3.5/ 5.0/ 5.5 :JACKSON, MS EUBANKS CREEK .END $$  071 FOUS74 KORN 211433 FFHGSP HEADWATER GUIDANCE FOR HSA.....GREENVILLE/SPARTANBURG SC NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....NORTH CAROLINA : ROSN7 3.5/ 4.7/ 5.5/ 6.0/ 6.5 :ROSMAN, NC FRENCH BROAD R. BLTN7 3.0/ 4.1/ 5.5/ 6.0/ 6.5 :BILTMORE, NC SWANNANOAH R. BIRN7 3.5/ 5.0/ 5.5/ 6.0/ 6.5 :BIRDTOWN, NC OCONALUFTEE R. .END $$  073 FOUS74 KORN 211433 FFHLZK HEADWATER GUIDANCE FOR HSA.....LITTLE ROCK AR NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....ARKANSAS : BTNA4 3.5/ 5.0/ 5.5 :BENTON, AR SALINE R. CIGA4 2.8/ 3.5/ 4.2 :CLINTON, AR S. FK LZKTLE RED R. HDYA4 3.5/ 5.0/ 5.5 :HARDY, AR SPRING R. .END $$  074 FOUS74 KORN 211433 FFHRNK HEADWATER GUIDANCE FOR HSA.....BLACKSBURG VA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF/PPKCF/PPDCF : :IDENT 1HR 3HR 6HR 12HR 24HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==== ==================== ================== : :.....VIRGINIA : SALV2 2.1/ 2.3/ 2.5/ 3.1/ 4.0 :SALTVILLE, VA N.F. HOLSTON R. SGWN7 1.3/ 1.3/ 1.6/ 2.1/ 3.0 :SUGAR GROVE, NC WATAUGA R. SMFV2 2.7/ 2.9/ 3.2/ 3.7/ 4.5 :SEVEN MILE FORD, VA M.F. HOLSTON R. RLRV2 1.5/ 1.6/ 1.7/ 2.1/ 3.0 :RICHLANDS, VA CLINCH R. .END $$  075 FOUS74 KORN 211433 FFHSHV HEADWATER GUIDANCE FOR HSA.....SHREVEPORT LA NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....LOUISIANA : KEIL1 3.5/ 5.0/ 5.5 :KEITHVILLE, LA CYPRESS BAYOU .END $$  076 FOUS74 KORN 211433 FFHLSX HEADWATER GUIDANCE FOR HSA.....ST. LOUIS MO NATIONAL WEATHER SERVICE LOWER MISSISSIPPI RIVER FORECAST CENTER, SLIDELL LA 933 AM CDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN HEADWATERS. .B SIL 260821 Z DH12/DC2608211433 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : :.....MISSOURI : ANNM7 2.8/ 3.6/ 4.4 :ANNAPOLIS, MO BLACK R. .END $$  280 AWUS01 KWNH 211556 FFGMPD NCZ000-SCZ000-GAZ000-212145- Mesoscale Precipitation Discussion 1102 NWS Weather Prediction Center College Park MD 1155 AM EDT Fri Aug 21 2026 Areas affected...Much of the Carolinas...Adj. East Central Georgia... Concerning...Heavy rainfall...Flash flooding likely Valid 211545Z - 212145Z SUMMARY...Environment for colliding boundaries and sufficient organization to support 2-2.5"/hr rates with occasionally locally higher 3"/hr rates probable. Potential for above normal scattered incidents of 2-4" likely to result in localized flash flooding, especially near multiple large metro areas through the Piedmont. DISCUSSION...A favorable moist and unstable environment with multiple sufficient dynamic elements to help generate strong, efficient rainfall producing thunderstorms exists across the Carolinas this afternoon. GOES-E WV suite shows a convectively enhanced shortwave/MCV at the base of the larger scale trough currently in Western NC along the eastern slopes of the Appalachians with a positive tilt trough/orientation back across central GA. This wave is lifting northeastward behind the initial convective line. This convective line remains progressive across SW VA with an outflow/convergence boundary draped southward across north-central NC. A surface front intersects the coast near Jacksonville, NC before reaching a well defined surface low northeast of Florence, SC; while the upstream stationary front remains well defined toward Augusta, GA. However, a differential heating boundary exists across north-eastern NC (east of the aforementioned outflow boundary), so while post-frontal, solid insolation and Tds in the low to mid-70s remain allowing for an expanding wedge of SBCAPEs across much of eastern and central NC with tight gradients and rising to 2500-4000 J/kg from near Charlotte to the SE NC coast. The last piece of forcing is related to failed convection/outflow boundaries across central SC lifting northward off the surface frontal boundary; though sea-breeze may be a contributing factor though not established at this time. Being at the base of the long wave trough with elongated shortwave/vorticity feature along the Appalachians will support and expanding right entrance region mainly across NC throughout the early afternoon providing further divergence and deep layer effective bulk shear around 25-30kts, suggesting a bit more overall organization and less pulse-like up/downdrafts further north across the area. However, with overall TPW values of 2-2.25" pooled along the boundary and toward the Atlantic coast, the modest surface to boundary layer directional convergence may over-come the weaker overall speeds but allow for quick vertical ascent and moisture loading. Quick conversion to 2-2.5"/hr rates are initially possible near the boundary. However, with the shear/outflow and multiple colliding boundary potential, slow moving, merging clusters should evolve allowing for localized enhanced residency and occasional up-tick in rates toward 3"/hr locally. By 21-22z, there should be scattered areas of localized 2-5", with higher areal concentration generally north and east of the surface low, near the front. Hydrologically, the most prone areas/lowest FFG align with the Fall-line from Augusta to Columbia to Charlotte to Raleigh-Durham all of which have a solid potential of being intersected by thunderstorms. Given hourly FFG values less than 2" and 3hr values of 2-2.5" if directly under the slow moving cells will likely result in incidents of rapid inundation/flash flooding. While FFG values are much higher eastward into the Coastal Plains, FFG value of 3-4"/3hrs still may be exceeded given HREF probability of 3"/6hr remains above over 50-60% within 40km of any given point in the MPD area of concern and further expands to over 80% if extending out to 00z. All in all, a wet afternoon/evening will see incidents of flash flooding but they may be more locally focused at least initially. Gallina ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...CAE...FFC...GSP...ILM...MHX...RAH... ATTN...RFC...ALR...NWC... LAT...LON 36167792 35707692 34857645 34687682 34417736 34187768 33807790 33737871 33767967 33498070 33138221 33528310 34688278 35818112 36087928  811 FOUS62 KALR 211832 FFGSJU COUNTY FLASH FLOOD GUIDANCE...PUERTO RICO NATIONAL WEATHER SERVICE SOUTHEAST RIVER FORECAST CENTER...ATLANTA GA 231 PM EDT FRI AUG 21 2026 INCHES OF RAINFALL FOR SPECIFIED DURATIONS REQUIRED TO PRODUCE FLASH FLOODING IN FORECAST ZONES. LOWER AMOUNTS MAY CAUSE FLASH FLOODING IN URBAN OR MOUNTAINOUS AREAS. .B ALR 20260821 Z DH18/DC202608211831 /DUE/PPHCF/PPTCF/PPQCF :IDENTIFIERS ARE 2-LETTER STATE, Z FOR ZONE, 3-DIGIT ZONE NUMBER : :IDENT 1HR 3HR 6HR ZONE NAME :======= ==== ==== ==== ==================== PRZ001 1.9/ 3.5/ 4.8 PRZ002 1.9/ 3.5/ 4.8 PRZ003 1.9/ 3.2/ 4.6 PRZ004 1.9/ 3.2/ 4.6 PRZ005 1.5/ 2.1/ 2.7 PRZ006 1.5/ 2.1/ 2.7 PRZ007 1.5/ 2.1/ 2.7 PRZ008 1.5/ 2.1/ 2.7 PRZ009 1.5/ 2.1/ 2.7 PRZ010 1.5/ 2.1/ 2.7 PRZ011 1.5/ 2.1/ 2.7 PRZ012 2.0/ 3.2/ 4.5 PRZ013 2.0/ 3.2/ 4.5 VIZ001 2.1/ 3.2/ 4.6 VIZ002 2.1/ 3.2/ 4.6 .END $$ S.E.R.F.C. 770-486-0028 or 770-282-2112 Regular Hours 6am-10pm Eastern Time After Hours Please Follow Callback Instructions  125 AWUS01 KWNH 211855 FFGMPD COZ000-NMZ000-220100- Mesoscale Precipitation Discussion 1103 NWS Weather Prediction Center College Park MD 255 PM EDT Fri Aug 21 2026 Areas affected...Southern Rockies Concerning...Heavy rainfall...Flash flooding possible Valid 211900Z - 220100Z SUMMARY...Developing thunderstorms over the Southern Rockies will generate ~1"/hr rainfall rates in the most intense cells. Some mountain ranges were hit with heavy rainfall last night, making soils more susceptible to flash flooding. Flash flooding is possible this afternoon with burn scars most at risk. DISCUSSION...GOES East satellite shows bubbling towering cumulus over the Southern Rockies that are starting to produce thunderstorms over the Sacramento, the Mogollon and Gila Mountains, and the CO Rockies. The Southern Rockies are set to see developing storms in an increasingly unstable environment that will contain >500 J/kg SBCAPE and PWs >0.75". The region dealt with rounds of storms yesterday, causing soil moisture percentiles to exceed 80% per NASA SPoRT-LIS. There is a little less instability than yesterday, however with recent rainfall causing soils to be more sensitive than yesterday, localized flash flooding could occur where rainfall rates approach 1"/hr within slow moving storms. As outflows emanate away from the first round of storms this afternoon, additional storms may flare up in the early evening hours. Flash flooding is possible again this afternoon, primarily in areas with more saturated soils and the typical worrisome areas (burn scars, steep terrain). Mullinax ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...ABQ...EPZ...GJT...PUB... ATTN...RFC...FWR...STR...TUA...NWC... LAT...LON 38730653 38520552 38100513 37210505 36510520 35570545 34890535 33530532 32790540 32610594 32690621 33250620 33720623 34080687 33790733 32990760 32750822 32830866 33140895 33910898 34240895 34950890 35570871 35450808 35570753 36110736 36700753 36920787 37210815 37410839 37580862 37860875 38250873 38440862 38440818 38290740 38310677  196 AWUS01 KWNH 211931 FFGMPD SCZ000-FLZ000-GAZ000-ALZ000-220030- Mesoscale Precipitation Discussion 1104 NWS Weather Prediction Center College Park MD 330 PM EDT Fri Aug 21 2026 Areas affected...Central to southern Georgia Concerning...Heavy rainfall...Flash flooding possible Valid 211930Z - 220030Z Summary...Recently fired convection across central Georgia could produce flash flooding downstream through Southeast Georgia, where favorable instability (2000-3000 ML CAPE) & moisture (1.5-2" PWATs) are present. Discussion...Convection initiated along a pre-frontal surface trough oriented West to East across central Georgia. These storms are expected to propagate southeastward into a substantially moist and unstable environment. Precipitable water values between 1.5-2 inches in southeast Georgia/northern Florida combined with a mixed layer CAPE environment of 2000-3500J/Kg will support rates in excess of 2"/hr Hi-res guidance suggest a scattered heavy rainfall footprint with pockets of 1-2" rates and isolated 6 hour totals of 2-4" in parts of southern Georgia. Flash flooding is possible, especially in vulnerable areas from recent rainfall and poor drainage spots. Kebede ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...BMX...CAE...CHS...FFC...JAX...TAE... ATTN...RFC...ALR...NWC... LAT...LON 33638271 33628209 33378161 32748154 31888180 30878254 30368368 30458479 30838548 31428570 32038532 32658418 33128337  125 FOUS71 KRHA 211950 FFHNJ1 HEADWATER STATEMENT FOR NEW JERSEY STREAMS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 PM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH18/DC2608211930/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME STREAM :======= ==== ==== ==== ==== ==================== ================== : : NWS BROOKHAVEN SERVICE AREA... : Ramapo River... MAWN4 1.9/ 2.2/ 2.6/ 2.9 :Mahwah (8ft) Ramapo River :MAWN4md 2.2/ 2.5/ 3.1/ 3.5 Mahwah (9) Ramapo River :MAWN4mj 3.2/ 3.6/ 4.7/ 5.3 Mahwah (12) Ramapo River : Hohokus Brook... HOHN4 0.9/ 1.1/ 1.4/ 2.2 :Ho-Ho-Kus (3ft) Hohokus Brook : Saddle River... LODN4 1.1/ 1.1/ 1.3/ 1.9 :Lodi (5.5ft) Saddle River :LODN4md 1.5/ 1.6/ 1.8/ 2.6 Lodi (7) Saddle River :LODN4mj 1.8/ 1.9/ 2.1/ 3.1 Lodi (8) Saddle River : Rahway River... SPGN4 1.4/ 1.4/ 1.5/ 1.9 :Springfield (5.5ft) Rahway River : : NWS MT. HOLLY SERVICE AREA... : PASSAIC BASIN... : Passaic River... CAMN4 2.7/ 2.7/ 3.3/ 3.6 :Chatham (6ft) Passaic River :CAMN4md 4.5/ 4.7/ 5.3/ 6.0 Chatham (7.2) Passaic River :CAMN4mj 5.1/ 5.4/ 6.3/ 7.1 Chatham (8.2) Passaic River : Rockaway River... BOTN4 3.4/ 3.8/ 4.2/ 5.2 :Boonton Abv. (5ft) Rockaway River :BOTN4md 3.9/ 4.4/ 5.1/ 6.3 Boonton Abv. (6) Rockaway River :BOTN4mj 4.2/ 4.8/ 5.5/ 6.9 Boonton Abv. (7) Rockaway River : Whippany River... WHIN4 1.8/ 1.9/ 2.3/ 2.4 :Morristown (6ft) Whippany River : RARITAN BASIN.. : South Branch Raritan River... STTN4 2.1/ 2.2/ 2.8/ 3.0 :Stanton (8ft) S. Br. Raritan River :STTN4md 2.2/ 2.4/ 3.3/ 3.8 Stanton (10) S. Br. Raritan River :STTN4mj 2.5/ 2.7/ 3.9/ 4.6 Stanton (12) S. Br. Raritan River : North Branch Raritan River... RRTN4 1.8/ 2.0/ 2.4/ 2.8 :Raritan (10ft) N. Br. Raritan River :RRTN4md 1.9/ 2.2/ 2.8/ 3.5 Raritan (12) N. Br. Raritan River :RRTN4mj 2.3/ 2.7/ 3.5/ 4.4 Raritan (15) N. Br. Raritan River : Millstone River... BKWN4 2.8/ 3.1/ 3.4/ 3.4 :Blackwells Mills(9ft) Millstone River :BKWN4md 2.9/ 3.1/ 3.5/ 3.5 Blackwells Mills(10) Millstone River :BKWN4mj 3.2/ 3.6/ 4.0/ 4.8 Blackwells Mills(15) Millstone River : DELAWARE BASIN... : Assunpink Creek...TACN4 2.0/ 2.1/ 2.6/ 3.2 :Trenton (8.5ft) Assunpink Creek :TACN4md 2.1/ 2.3/ 3.1/ 3.6 Trenton (9.5) Assunpink Creek :TACN4mj 2.3/ 2.6/ 3.5/ 4.2 Trenton (11) Assunpink Creek .END $$ NNNN $$ NNNN  126 FOUS71 KRHA 211950 FFHPA2 HEADWATER STATEMENT FOR THE DELAWARE AND SUSQUEHANNA BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 PM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH18/DC2608211930/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS BINGHAMTON SERVICE AREA... : SUSQUEHANNA BASIN... : Tioughnioga River... CRTN6 2.5/ 2.8/ 3.1/ 3.4 :Cortland (8ft) :CRTN6md 2.6/ 3.0/ 3.9/ 4.2 Cortland (10) :CRTN6mj 2.8/ 3.3/ 4.4/ 4.9 Cortland (12.5) : Chenango River... SHBN6 2.5/ 2.8/ 2.9/ 3.5 :Sherburne (8.5ft) :SHBN6md 2.6/ 2.9/ 3.3/ 4.3 Sherburne (9) :SHBN6mj 2.7/ 3.1/ 3.8/ 4.6 Sherburne (10.6) : Otselic River... CINN6 2.9/ 3.2/ 3.7/ 4.6 :Cincinnatus (9ft) : ...moderate and major flood stages above rating table. : Cohocton River... CMPN6 2.8/ 3.1/ 3.6/ 4.3 :Campbell (8ft) :CMPN6md 3.0/ 3.4/ 4.4/ 5.0 Campbell (10) :CMPN6mj 3.2/ 3.6/ 5.0/ 5.7 Campbell (11) : Canisteo River... WCRN6 2.0/ 2.4/ 3.0/ 3.8 :West Cameron (17ft) :WCRN6md 2.1/ 2.4/ 3.1/ 4.0 West Cameron (18) :WCRN6mj 2.4/ 2.8/ 3.7/ 4.7 West Cameron (21) : Towanda Creek... MONP1 1.7/ 1.9/ 2.3/ 2.9 :Monroeton (15.5ft) :MONP1md 1.8/ 2.0/ 2.6/ 3.2 Monroeton (17) :MONP1mj 2.1/ 2.3/ 3.0/ 3.8 Monroeton (18.5) : Tunkhannock Creek... TNKP1 2.2/ 2.7/ 4.0/ 4.6 :Tunkhannock (11ft) :TNKP1md 2.4/ 3.0/ 4.4/ 5.3 Tunkhannock (14) :TNKP1mj 2.6/ 3.3/ 4.9/ 5.8 Tunkhannock (17) : Lackawanna River... OFRP1 2.2/ 2.7/ 3.3/ 4.5 :Old Forge (11ft) :OFRP1md 2.3/ 2.8/ 3.5/ 4.7 Old Forge (13) :OFRP1mj 2.5/ 3.0/ 3.9/ 5.1 Old Forge (16) : DELAWARE BASIN... : East Branch Delaware River... MRGN6 3.5/ 3.9/ 4.5/ 5.0 :Margaretville (11ft) :MRGN6md 4.2/ 4.7/ 5.4/ 6.2 Margaretville (12) :MRGN6mj 4.9/ 5.5/ 6.5/ 7.6 Margaretville (13) : West Branch Delaware River... WALN6 2.5/ 2.6/ 2.9/ 3.4 :Walton (11.5ft) :WALN6md 2.8/ 3.0/ 3.4/ 3.9 Walton (14) :WALN6mj 3.4/ 3.6/ 4.1/ 4.7 Walton (16) : Beaverkill Creek... CKFN6 1.7/ 1.9/ 2.2/ 2.6 :Cooks Falls (10ft) :CKFN6md 2.5/ 2.8/ 3.5/ 4.5 Cooks Falls (16) :CKFN6mj 3.0/ 3.3/ 4.2/ 5.6 Cooks Falls (18) : Lackawaxen River... HWYP1 2.3/ 2.7/ 3.2/ 4.0 :Hawley (14ft) :HWYP1md 3.1/ 3.4/ 4.2/ 5.3 Hawley (20) :HWYP1mj 3.3/ 3.7/ 4.6/ 5.8 Hawley (22) : : NWS STATE COLLEGE SERVICE AREA... : SUSQUEHANNA BASIN... : Tioga River... MFDP1 1.8/ 2.3/ 3.3/ 4.1 :Mansfield (12ft) :MFDP1md 1.9/ 2.5/ 3.7/ 4.5 Mansfield (13) :MFDP1mj 2.1/ 2.8/ 4.2/ 5.0 Mansfield (14) : Penns Creek... PNCP1 2.6/ 2.9/ 3.0/ 3.3 :Penns Creek (8ft) :PNCP1md 2.8/ 3.1/ 3.5/ 4.4 Penns Creek (10) :PNCP1mj 3.0/ 3.5/ 4.3/ 5.3 Penns Creek (12) : Frankstown Branch Juniata River... WIBP1 1.7/ 1.8/ 2.1/ 2.1 :Williamsburg (12ft) :WIBP1md 1.7/ 1.9/ 2.2/ 2.3 Williamsburg (13) :WIBP1mj 1.8/ 2.0/ 2.4/ 2.8 Williamsburg (15) : Little Juniata River... SPKP1 1.3/ 1.4/ 1.6/ 1.6 :Spruce Creek (8ft) :SPKP1md 1.5/ 1.5/ 1.8/ 1.9 Spruce Creek (10) :SPKP1mj 1.9/ 2.0/ 2.5/ 2.8 Spruce Creek (14) : Aughwick Creek... SLYP1 1.4/ 1.5/ 1.7/ 2.0 :Shirleysburg (10ft) :SLYP1md 1.6/ 1.7/ 2.0/ 2.4 Shirleysburg (12) :SLYP1mj 3.8/ 4.1/ 4.9/ 6.7 Shirleysburg (20) : Sherman Creek... SMDP1 2.1/ 2.4/ 2.9/ 3.5 :Shermans Dale (9ft) :SMDP1md 2.4/ 2.8/ 3.4/ 4.0 Shermans Dale (11) :SMDP1mj 3.8/ 4.4/ 5.3/ 6.1 Shermans Dale (16) : Conodoguinet Creek... HGSP1 3.2/ 3.2/ 3.4/ 3.4 :Hogestown (8ft) :HGSP1md 3.4/ 3.6/ 4.3/ 4.9 Hogestown (10) :HGSP1mj 3.7/ 4.1/ 5.1/ 5.7 Hogestown (12) : Yellow Breeches Creek... CPHP1 1.7/ 2.1/ 2.4/ 3.8 :Camp Hill (7ft) :CPHP1md 1.8/ 2.2/ 2.7/ 4.1 Camp Hill (9) :CPHP1mj 2.3/ 2.8/ 3.7/ 5.2 Camp Hill (13) : Swatara Creek... HTVP1 1.9/ 2.3/ 2.8/ 4.1 :Harper Tavern (9ft) :HTVP1md 2.2/ 2.7/ 3.6/ 5.0 Harper Tavern (12) :HTVP1mj 2.6/ 3.2/ 4.1/ 5.8 Harper Tavern (15) : Conestoga River... LNCP1 1.6/ 1.9/ 2.0/ 2.9 :Lancaster (11ft) :LNCP1md 1.7/ 2.1/ 2.3/ 3.3 Lancaster (13) :LNCP1mj 1.9/ 2.3/ 2.7/ 3.7 Lancaster (15) : DELAWARE BASIN... : Schuylkill River... LGVP1 2.5/ 2.6/ 2.7/ 2.9 :Landingville (8ft) :LGVP1md 3.3/ 3.5/ 3.7/ 4.1 Landingville (12) :LGVP1mj 4.0/ 4.4/ 4.7/ 5.2 Landingville (14) : : NWS MT. HOLLY SERVICE AREA... : DELAWARE BASIN... : Schuylkill River... BREP1 2.8/ 3.7/ 4.6/ 5.9 :Berne (12ft) :BREP1md 3.1/ 4.1/ 5.2/ 6.8 Berne (14) :BREP1mj 3.5/ 4.6/ 5.7/ 7.5 Berne (16) : Bush Kill... SHOP1 2.6/ 3.1/ 3.4/ 3.4 :Shoemakers (6ft) :SHOP1md 2.7/ 3.3/ 3.9/ 4.5 Shoemakers (7) :SHOP1mj 2.9/ 3.6/ 4.5/ 5.0 Shoemakers (8) : Brodhead Creek... MNSP1 1.7/ 2.1/ 2.7/ 3.6 :Minisink Hills(10ft) :MNSP1md 1.9/ 2.3/ 3.1/ 4.0 Minisink Hills(12) :MNSP1mj 2.1/ 2.6/ 3.6/ 4.7 Minisink Hills(15) : Little Lehigh Creek...APAP1 4.2/ 4.5/ 5.0/ 5.9 :Allentown-10th (8ft) :APAP1md 5.2/ 5.6/ 6.2/ 7.5 Allentown-10th (10) :APAP1mj 6.2/ 6.7/ 7.4/ 8.0 Allentown-10th (12) : Perkiomen Creek... GRAP1 1.7/ 2.0/ 2.7/ 3.4 :Graterford (11ft) :GRAP1md 1.8/ 2.2/ 3.1/ 3.7 Graterford (13) :GRAP1mj 2.1/ 2.6/ 3.7/ 4.4 Graterford (16) : Neshaminy Creek... LNGP1 2.3/ 2.3/ 2.3/ 2.3 :Langhorne (9ft) :LNGP1md 2.5/ 2.6/ 2.7/ 2.7 Langhorne (10) :LNGP1mj 2.7/ 2.9/ 3.3/ 3.5 Langhorne (12) : Chester Creek... CHSP1 1.6/ 1.7/ 1.9/ 2.5 :Chester (8ft) :CHSP1md 2.1/ 2.2/ 2.5/ 3.2 Chester (10) :CHSP1mj 3.0/ 3.1/ 3.5/ 4.5 Chester (14) : West Branch Brandywine Creek... MODP1 3.6/ 3.8/ 4.2/ 4.4 :Modena (9ft) :MODP1md 4.2/ 4.4/ 4.8/ 5.1 Modena (10) :MODP1mj 6.5/ 7.0/ 7.4/ 8.0 Modena (12) : East Branch Brandywine Creek... DWNP1 1.0/ 1.0/ 1.0/ 1.1 :Downingtown (7ft) :DWNP1md 1.6/ 1.6/ 1.7/ 1.9 Downingtown (9) :DWNP1mj 2.5/ 2.5/ 2.6/ 2.9 Downingtown (11) : Brandywine Creek... CDFP1 2.0/ 2.0/ 2.0/ 2.2 :Chadds Ford (9ft) :CDFP1md 2.2/ 2.2/ 2.5/ 3.2 Chadds Ford (11) :CDFP1mj 2.4/ 2.5/ 3.2/ 4.0 Chadds Ford (13) : Christina River... CHBD1 1.4/ 1.5/ 1.8/ 2.6 :Coochs Brdg(11ft) :CHBD1md 1.8/ 1.9/ 2.3/ 3.3 Coochs Brdg(12) :CHBD1mj 2.4/ 2.6/ 3.1/ 4.3 Coochs Brdg(13) : White Clay Creek... DPKD1 1.5/ 1.6/ 1.8/ 2.4 :Delaware Pk (13ft) :DPKD1md 2.2/ 2.3/ 2.5/ 3.3 Delaware Pk (15) :DPKD1mj 3.3/ 3.4/ 3.8/ 4.8 Delaware Pk (16.5) : Red Clay Creek... RCCD1 1.8/ 2.0/ 2.3/ 2.8 :Wooddale (7ft) :RCCD1md 2.5/ 2.7/ 3.1/ 3.7 Wooddale (8.5) :RCCD1mj 3.2/ 3.5/ 3.9/ 4.7 Wooddale (10) .END :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS BINGHAMTON SERVICE AREA... .B RHA 260821 Z DH18/DC2608211930/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages : Lackawanna River... ARHP1 3.8/ 3.9/ 4.3/ 5.2 :Archbald (8ft) :ARHP1md 4.4/ 4.6/ 5.0/ 6.1 Archbald (9) :ARHP1mj 5.0/ 5.2/ 5.8/ 7.1 Archbald (10) PKIP1 4.2/ 4.3/ 4.5/ 5.0 :Scranton (12.5ft.) :PKIP1md 4.5/ 4.6/ 4.8/ 5.3 Scranton (14) :PKIP1mj 4.7/ 4.8/ 5.0/ 5.5 Scranton (15) .END : Model-simulated 3-hourly stage forecasts including QPF... .E ARHP1 20260821 DC2608211950/DH21/HGIFX/DIH3/ .E1 1.9/1.9/1.9/1.8/1.8/1.8/1.8/1.8 .E PKIP1 20260821 DC2608211950/DH21/HGIFX/DIH3/ .E1 1.2/1.2/1.2/1.1/1.1/1.1/1.1/1.1 $$ NNNN  127 FOUS71 KRHA 211950 FFHVA2 HEADWATER STATEMENT FOR THE POTOMAC AND JAMES BASINS MIDDLE ATLANTIC RIVER FORECAST CENTER NATIONAL WEATHER SERVICE STATE COLLEGE PA 330 PM EDT FRI AUG 21 2026 APPROXIMATE 1/3/6/12-HR BASIN AVERAGED RAINFALL (INCHES) REQUIRED TO CAUSE MINOR, MODERATE, AND MAJOR FLOODING AT THE INDICATED HEADWATER LOCATIONS. .B RHA 260821 Z DH18/DC2608211930/DUE/PPHCF/PPTCF/PPQCF/PPKCF : :IDENT 1HR 3HR 6HR 12HR HEADWATER NAME :======= ==== ==== ==== ==== ==================== : : NWS STERLING SERVICE AREA... : POTOMAC BASIN... : North Branch Potomac River... KITM2 2.1/ 2.3/ 2.7/ 3.5 :Kitzmiller (9ft) :KITM2md 2.9/ 3.2/ 4.0/ 5.4 Kitzmiller (11) :KITM2mj 4.3/ 4.8/ 6.2/ 8.0 Kitzmiller (13) : Georges Creek... WSTM2 1.2/ 1.4/ 1.6/ 2.0 :Westernport (8ft) :WSTM2md 1.9/ 2.1/ 2.5/ 2.9 Westernport (10) :WSTM2mj 2.5/ 2.9/ 3.3/ 3.9 Westernport (12) : South Branch Potomac River... FKLW2 2.1/ 2.4/ 2.6/ 3.3 :Franklin (7ft) :FKLW2md 2.3/ 2.6/ 2.9/ 3.9 Franklin (9) :FKLW2mj 2.5/ 2.9/ 3.2/ 4.5 Franklin (11) : Opequon Creek... MBGW2 2.5/ 3.2/ 3.7/ 4.8 :Martinsburg (10ft) :MBGW2md 2.7/ 3.4/ 4.0/ 5.6 Martinsburg (12.5) :MBGW2mj 3.1/ 3.9/ 4.8/ 6.5 Martinsburg (15) : South River... WAYV2 3.5/ 4.3/ 5.6/ 7.1 :Waynesboro (9.5ft) :WAYV2md 3.7/ 4.5/ 6.1/ 7.8 Waynesboro (11) :WAYV2mj 4.0/ 5.0/ 6.9/ 8.0 Waynesboro (13) : North Fork Shenandoah River... COOV2 2.5/ 2.8/ 3.7/ 4.4 :Cootes Store (15ft) :COOV2md 2.9/ 3.3/ 4.5/ 5.4 Cootes Store (18) :COOV2mj 3.4/ 3.8/ 5.4/ 6.6 Cootes Store (21) : Antietam Creek... SACM2 2.1/ 2.9/ 3.8/ 5.5 :Sharpsburg (8ft) :SACM2md 2.2/ 3.0/ 4.4/ 6.1 Sharpsburg (10) :SACM2mj 2.4/ 3.3/ 5.2/ 6.9 Sharpsburg (12) : Seneca Creek... DAWM2 2.4/ 2.6/ 3.0/ 3.6 :Dawsonville (7.5ft) :DAWM2md 3.0/ 3.4/ 4.7/ 6.0 Dawsonville (11) :DAWM2mj 5.0/ 5.8/ 7.4/ 8.0 Dawsonville (16) : : NWS BLACKSBURG SERVICE AREA... : Maury River... BVSV2 4.6/ 6.5/ 7.4/ 8.0 :Buena Vista (17ft) :BVSV2cs 4.2/ 5.5/ 7.0/ 8.0 Buena Vista (13) :BVSV2md 4.8/ 6.7/ 7.4/ 8.0 Buena Vista (19) :BVSV2mj 5.0/ 7.0/ 7.4/ 8.0 Buena Vista (21) .END : :=============================================================== : EXPERIMENTAL NON-FCST POINT RAW MODEL OUTPUT : NO MANUAL QC OR ADJUSTMENTS APPLIED...USE WITH CAUTION :=============================================================== : : NWS STERLING SERVICE AREA... : Rock Creek at Sherrill Drive.,Washington DC .B RHA 260821 Z DH18/DC2608211930/DUE/PPHCF/PPTCF/PPQCF/PPKCF :GageID 1hr 3hr 6hr 12hr rainfall for indicated stages RCKD2 1.7/ 1.8/ 2.0/ 2.4 :Washington, DC (7ft) :RCKD2md 2.3/ 2.6/ 2.9/ 3.5 Washington, DC (10) :RCKD2mj 3.1/ 3.4/ 3.8/ 4.6 Washington, DC (12) .END : Model-simulated 3-hourly stage forecasts including QPF... .E RCKD2 20260821 DC2608211950/DH21/HGIFX/DIH3/ .E1 2.0/2.0/2.0/2.0/2.0/2.2/2.3/2.7 $$ NNNN  749 AWUS01 KWNH 212001 FFGMPD FLZ000-ALZ000-MSZ000-LAZ000-220200- Mesoscale Precipitation Discussion 1105 NWS Weather Prediction Center College Park MD 401 PM EDT Fri Aug 21 2026 Areas affected...Central Gulf Coast Concerning...Heavy rainfall...Flash flooding possible Valid 212000Z - 220200Z SUMMARY...Robust and slow moving thunderstorms will be capable of producing torrential rainfall rates >3"/hr this afternoon and evening. Flash flooding is possible, especially in poor drainage areas and in more urbanized settings. DISCUSSION...Surface analysis showed a surface convergence boundary located just north of I-10 with a cold front farther north and working its way south. GOES East and Doppler Radar show thunderstorms have formed in an environment that is primed for producing torrential rainfall rates. RAP mesoanalysis shows PWs are >2.0" and MLCAPE ranging between 2,500-4,000 J/kg. 18Z HRRR area-averaged soundings within the at-risk area show warm cloud layers nearly 14,000ft deep and RH levels within the 1000-500mb layer are likely to top 80%. Storms are forming within an environment that will see increasing 850-300mb mean winds out of the NW, directing any storms north of I-10 towards the I-10 corridor this evening. Storm motions will be slow at their onset, with MRMS instantaneous rates >3" in some of these initial thunderstorms. Slower moving cells could generate >3"/hr rainfall rates before either dissipating or drifting south towards the Gulf Coast. FFGs are fairly high in southern LA and southern MS, with some areas in southern AL and the FL Panhandle that have 1-hr FFGs <2.5". Given the higher FFGs, soils will be able to handle most of the intense rates. That said, areas where storms are slow to move could lead to flash flooding in poor drainage areas and in more urbanized areas (ex: New Orleans/I-10 Corridor). Flash flooding is possible in these areas through the early evening hours. Mullinax ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...BMX...JAN...LCH...LIX...MOB...SHV...TAE... ATTN...RFC...ALR...ORN...NWC... LAT...LON 32649186 32629118 32479074 32289032 32198996 32108920 32138828 32178802 32288730 32188679 32088633 32018597 31888565 31608565 31318575 31168613 30988635 30728674 30458705 30218767 29758878 29678942 29668989 29719055 29929106 30419152 30859188 31359217 31839222 32389217  659 FOUS73 KMSR 212000 FFHLSX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 ST LOUIS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MISSOURI HEADWATER POINTS *** : EWNM7 2.9/ 3.2/ 3.7 :EWING MO 5E NORTH FABIUS R EWMM7 2.9/ 3.2/ 3.7 :EWING MO 1NNE MIDDLE FABIUS R PALM7 1.7/ 1.8/ 2.2 :PALMYRA MO NORTH R TAYM7 1.7/ 2.2/ 2.8 :TAYLOR MO S FABIUS R PMZM7 2.2/ 2.5/ 2.9 :HOLLIDAY MO 2N MI FK SALT R TRYM7 1.5/ 1.6/ 1.8 :TROY MO CUIVRE R DRCM7 1.8/ 1.9/ 2.1 :ST PETERS MO DARDENNE CR LSLM7 2.0/ 2.2/ 2.5 :LAKE SAINT LOUIS PERUQUE CR - ABOVE LSTM7 1.5/ 1.7/ 1.9 :LAKE ST LOUIS MO PERUQUE CR CSNM7 1.4/ 1.5/ 1.5 :COOK STATION MO 1N MERAMEC R SEEM7 1.3/ 1.5/ 1.8 :STEELVILLE MO 2N MERAMEC R UNNM7 3.1/ 3.3/ 3.5 :UNION MO BOURBEUSE R BYRM7 2.6/ 3.0/ 3.5 :BYRNESVILLE MO 2NNE BIG R .END $$  660 FOUS73 KMSR 212000 FFHMKX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 MILWAUKEE HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** WISCONSIN HEADWATER POINTS *** : AFTW3 2.3/ 2.7/ 3.2 :AFTON WI ROCK R BCHW3 1.6/ 1.7/ 2.0 :BLANCHARDVILLE WI E BR PECATONICA R BUNW3 2.6/ 2.8/ 3.3 :BUNCOMBE WI GALENA R DARW3 2.1/ 2.3/ 3.0 :DARLINGTON WI PECATONICA R MTNW3 1.5/ 1.7/ 2.6 :MARTINTOWN WI PECATONICA R MAZW3 2.2/ 2.4/ 3.0 :MAZOMANIE WI BLACK EARTH CR KINW3 3.3/ 3.9/ 4.5 :MILWAUKEE WI KINNICKINNIC R SEBW3 2.9/ 3.1/ 3.7 :SHEBOYGAN WI SHEBOYGAN R WKEW3 3.5/ 3.6/ 3.6 :WAUKESHA WI FOX R WWTW3 3.5/ 3.9/ 4.2 :WAUWATOSA WI MENOMONEE R BLOW3 1.6/ 1.7/ 2.0 :BELOIT WI TURTLE CR MFSW3 0.5/ 1.0/ 1.0 :MENOMONEE FALLS WI MENOMONEE R OAKW3 2.4/ 2.5/ 3.0 :SOUTH MILWAUKEE OAK CR .END $$  661 FOUS73 KMSR 212000 FFHMPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 TWIN CITIES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : SNCM5 2.5/ 2.6/ 2.9 :JORDAN MN SAND CR PNLM5 3.1/ 3.7/ 4.5 :PINE ISLAND MN MID FK ZUMBRO R PILM5 3.5/ 4.0/ 4.5 :PINE ISLAND MN N B MID FK ZUMBRO R WGOM5 3.5/ 4.0/ 4.5 :WANAMINGO MN NO FK ZUMBRO R .END $$  672 FOUS73 KMSR 212000 FFHFGF HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 GRAND FORKS HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MINNESOTA HEADWATER POINTS *** : CSRM5 3.5/ 3.9/ 4.1 :CAMPBELL MN 1W SO FK RABBIT R MALM5 3.5/ 3.9/ 4.5 :MALUNG MN 2NW ROSEAU R BLO SO FK : : *** NORTH DAKOTA HEADWATER POINTS *** : DWGN8 3.5/ 4.0/ 4.5 :DWIGHT ND 1NE ANTELOPE CR HGRN8 3.5/ 4.0/ 4.5 :HILLSBORO ND GOOSE R LTRN8 2.5/ 2.7/ 3.0 :LARIMORE ND 5ENE TURTLE R .END $$  673 FOUS73 KMSR 212000 FFHDMX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 DES MOINES HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : AKWI4 2.7/ 2.8/ 3.0 :ACKWORTH IA SOUTH R AMWI4 2.8/ 2.9/ 2.9 :AMES IA IOWAY CR BSSI4 2.7/ 2.8/ 3.1 :BUSSEY IA CEDAR CR DFMI4 3.3/ 3.3/ 3.5 :DSM-EASTON FOUR MILE CR CLVI4 2.5/ 2.8/ 3.0 :CLIVE I-80/35 WALNUT CR DOSI4 2.7/ 2.8/ 3.2 :DSM-63RD ST WALNUT CR MCWI4 3.5/ 3.6/ 4.1 :MASON CITY IA WINNEBAGO R .END $$  675 FOUS73 KMSR 212000 FFHILX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 LINCOLN HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : BMII2 3.5/ 4.0/ 4.5 :BLOOMINGTON IL SUGAR CR RLLI2 0.5/ 1.0/ 1.0 :ROWELL IL SALT CR .END $$  680 FOUS73 KMSR 212000 FFHLOT HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 CHICAGO HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** ILLINOIS HEADWATER POINTS *** : NBPI2 2.5/ 2.6/ 2.8 :CHICAGO IL N BR CHICAGO R CDCI2 0.9/ 1.2/ 1.4 :CHICAGO HEIGHTS IL DEER CR DRFI2 2.3/ 2.7/ 3.7 :DEERFIELD IL N BR CHICAGO R DEKI2 3.5/ 4.0/ 4.5 :DE KALB IL S BR KISHWAUKEE R DSPI2 3.0/ 3.0/ 3.1 :DES PLAINES IL DES PLAINES R WLRI2 2.9/ 3.3/ 3.7 :DES PLAINES IL WELLER CR EMHI2 2.6/ 3.0/ 3.4 :ELMHURST IL SALT CR FLSI2 1.0/ 1.3/ 1.6 :FLOSSMOOR IL BUTTERFIELD CR GLWI2 1.4/ 1.7/ 2.1 :GLENWOOD IL THORN CR GUNI2 2.4/ 2.4/ 2.4 :GURNEE IL DES PLAINES R JHCI2 2.3/ 2.5/ 2.7 :JOLIET IL HICKORY CR LAFI2 2.3/ 2.7/ 3.7 :LAKE FOREST IL SKOKIE R NILI2 3.4/ 4.0/ 4.5 :NILES IL N BR CHICAGO R NBRI2 3.5/ 4.0/ 4.5 :NORTHBROOK IL W FK N BR CHICAGO R OAKI2 2.9/ 3.0/ 3.4 :OAK FOREST IL MIDLOTHIAN CR MCDI2 3.2/ 3.5/ 3.9 :PROSPECT HTS IL MCDONALD CR ALPI2 1.7/ 1.8/ 2.0 :ROCKFORD IL ALPINE DAM-KEITH CR LEVI2 2.0/ 2.4/ 2.9 :ROCKFORD IL LEVINGS LAKE PPLI2 2.2/ 2.6/ 3.1 :ROCKFORD IL PAGE PARK LAKE ROLI2 2.8/ 3.2/ 3.6 :ROLLING MEADOWS IL SALT CR SCHI2 3.5/ 3.9/ 4.5 :ST CHARLES IL FERSON CR SORI2 3.4/ 3.5/ 3.6 :SHOREWOOD IL DU PAGE R THNI2 1.2/ 1.2/ 1.2 :THORNTON IL THORN CR WHEI2 2.8/ 3.0/ 3.3 :WHEELING IL BUFFALO CR WLSI2 3.5/ 4.0/ 4.5 :WILLOW SPRINGS IL FLAG CR YRKI2 2.5/ 2.6/ 2.6 :YORKVILLE IL BLACKBERRY CR : : *** INDIANA HEADWATER POINTS *** : HDDI3 3.5/ 4.0/ 4.5 :DYER IN HART DITCH MNTI3 3.3/ 3.3/ 3.3 :MUNSTER IN HART DITCH LCMI3 2.6/ 2.6/ 2.6 :MUNSTER IN LITTLE CALUMET R PRTI3 1.9/ 1.9/ 1.9 :PORTER IN LITTLE CALUMET R .END $$  685 FOUS73 KMSR 212000 FFHARX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 LA CROSSE HYDRLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** IOWA HEADWATER POINTS *** : DEHI4 3.5/ 4.0/ 4.5 :DECORAH IA UPPER IOWA R DCHI4 2.7/ 3.0/ 3.5 :DORCHESTER IA UPPER IOWA R GRBI4 2.2/ 2.4/ 2.6 :GARBER IA TURKEY R : : *** MINNESOTA HEADWATER POINTS *** : ASTM5 2.3/ 2.6/ 2.9 :AUSTIN WWTP MN CEDAR R DOBM5 2.8/ 2.9/ 3.1 :AUSTIN MN-21ST DOBBINS CR TRCM5 3.2/ 3.5/ 4.2 :AUSTIN MN-41 AV NW TURTLE CR HOUM5 2.1/ 2.3/ 2.8 :HOUSTON MN ROOT R LNSM5 3.0/ 3.4/ 3.8 :LANESBORO MN S BR ROOT R LANM5 2.8/ 3.0/ 3.3 :LANSING MN CEDAR R PTNM5 3.0/ 3.2/ 4.0 :PRESTON MN S BR ROOT R RBCM5 3.5/ 3.8/ 4.3 :ROCHESTER MN BEAR CR RCCM5 3.3/ 3.5/ 4.1 :ROCHESTER MN CASCADE CR ROCM5 3.5/ 3.9/ 4.5 :ROCHESTER MN SILVER CR RCSM5 3.5/ 4.0/ 4.5 :HWY 14 ROCHESTER S FK ZUMBRO R RCHM5 3.3/ 3.8/ 4.5 :ROCHESTER MN S FK ZUMBRO R WSPM5 2.8/ 3.0/ 3.6 :WHITEWATER ST.PK MFK WHITEWATER R ZUMM5 3.2/ 4.0/ 4.5 :ZUMBRO FALLS MN ZUMBRO R : : *** WISCONSIN HEADWATER POINTS *** : BTNW3 2.4/ 2.5/ 2.5 :BURTON WI GRANT R DDGW3 3.4/ 3.5/ 3.6 :DODGE WI TREMPEALEAU R GMIW3 3.2/ 3.4/ 3.7 :GAYS MILLS WI KICKAPOO R HILW3 2.2/ 2.3/ 2.5 :HILLSBORO WWTP WI S BR BARABOO R LAFW3 2.9/ 3.0/ 3.2 :LA FARGE WI KICKAPOO R NEIW3 2.6/ 3.4/ 4.2 :NEILLSVILLE WI BLACK R ONTW3 3.3/ 3.4/ 3.5 :ONTARIO WI KICKAPOO R REAW3 2.8/ 3.0/ 3.1 :READSTOWN WI KICKAPOO R RVLW3 2.8/ 3.0/ 3.2 :ROCKVILLE WI 2E PLATTE R SOGW3 2.7/ 2.8/ 2.8 :SOLDIERS GROVE WI KICKAPOO R STEW3 2.9/ 3.0/ 3.1 :STEUBEN WI KICKAPOO R VIOW3 2.6/ 2.7/ 2.8 :VIOLA WI KICKAPOO R .END $$  686 FOUS73 KMSR 212000 FFHAPX HEADWATER FLASH FLOOD GUIDANCE NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN 300 PM CDT FRI AUG 21 2026 GAYLORD HYDROLOGIC SERVICE AREA AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING AT THE INDICATED LOCATIONS. .B MSR 260821 Z DH18/DC2608212000 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR HEADWATER NAME STREAM :======= ==== ==== ==== ==================== ================== : : *** MICHIGAN HEADWATER POINTS *** : BVTM4 3.5/ 4.0/ 4.5 :BEAVERTON MI TOBACCO R MYFM4 3.5/ 4.0/ 4.3 :MAYFIELD MI BOARDMAN R RUDM4 3.5/ 4.0/ 4.5 :RUDYARD MI PINE RIVER .END $$  473 AWUS01 KWNH 212113 FFGMPD AZZ000-UTZ000-NVZ000-220300- Mesoscale Precipitation Discussion 1106 NWS Weather Prediction Center College Park MD 512 PM EDT Fri Aug 21 2026 Areas affected...Southern & eastern Nevada...western Utah Concerning...Heavy rainfall...Flash flooding possible Valid 212110Z - 220300Z Summary...Storms initiating along a pair of surface convergence axes oriented north-south from the Desert Southwest into the southern Great Basin respectively could produce flash flooding within zones of favorable ambient moisture, instability and soil moisture. Discussion...Radar indicated convective cells initiating across the state of Nevada will continue propagating northward within the broad anticyclonic flow of an upper level ridge centered over the Four Corners this evening. Shortwave impulses embedded within the larger scale ridge will fuel storm initiation/development through the Great Basin. Cells initiating along a surface trough near Elko appear to also be forced by shortwave energy aloft. Favorable precipitable water values between 1-1.3" could be sufficient enough to wring out enough rainfall to produce isolated instances of flash flooding over relatively dry soils. A pool of 500-1500 J/Kg ML CAPE over southern Nevada will continue to support the enhancement of cells that initiate along the inverted surface trough running through the region over the next few hours. PWs between 1.5-2" are more than enough to generate flash flooding over the arid southern Nevada environment. CAMs suggest cells capable of producing rainfall rates of 0.5-1"hr over eastern and southern parts of the state over the next few hours. Kebede ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...LKN...SLC...VEF... ATTN...RFC...RSA...STR...NWC... LAT...LON 40701429 40211358 39171369 38081369 36811361 36191432 36101536 36601613 37561660 38691672 39871625 40551548  383 AWUS01 KWNH 212141 FFGMPD VAZ000-NCZ000-SCZ000-GAZ000-220330- Mesoscale Precipitation Discussion 1107 NWS Weather Prediction Center College Park MD 540 PM EDT Fri Aug 21 2026 Areas affected...Southern Mid-Atlantic Concerning...Heavy rainfall...Flash flooding likely Valid 212135Z - 220330Z SUMMARY...Additional areas of flash flooding are likely this afternoon and evening as thunderstorms produce rainfall rates up to 3"/hr. Locally significant impacts are possible. DISCUSSION...GOES East shows numerous thunderstorms from eastern GA on north and east through the Carolinas and into southeast VA. RAP mesoanalysis highlights a tropical air-mass over eastern NC and central SC with PWs between 2.2-2.5" in place. Despite storms having used up some of the available instability, MUCAPE continues to show 1,000-2,000 J/kg from northern NC to the central NC, and 2,000-3,000 J/kg from central SC on east through southern and eastern NC. HRRR area-averaged soundings show warm cloud layers up to 14,000ft deep, indicating a fairly deep column of highly efficient warm rain processes ongoing. The frontal boundary responsible for initiating these storms over the heart of the Carolinas, along with outflow boundaries nearby, will continue to develop additional storms through the early evening hours. Storms will be capable of producing 2-3"/hr rainfall rates in areas that are seeing soils quickly saturate. Storms will move ENE towards the Carolina coast and storms may propagate far enough north to approach the VA Beach/Norfolk area this evening. Additional flash flooding is likely with locally significant flash flooding possible, especially in areas where back-building and training thunderstorms occur. Mullinax ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...AKQ...CAE...CHS...GSP...ILM...MHX...RAH... ATTN...RFC...ALR...RHA...NWC... LAT...LON 36947662 36937609 36847583 36667569 36137556 35607537 35207550 34887579 34547630 34407661 34377703 34327719 33957768 33377802 32797946 32548037 32568129 32658184 33048217 33318214 33568194 33858153 34478093 35038058 35638029 36107959 36167922 36427880 36557839 36737766  772 AWUS01 KWNH 212234 FFGMPD WIZ000-ILZ000-IAZ000-220400- Mesoscale Precipitation Discussion 1108 NWS Weather Prediction Center College Park MD 634 PM EDT Fri Aug 21 2026 Areas affected...Southern WI...Northern IL Concerning...Heavy rainfall...Flash flooding possible Valid 212230Z - 220400Z SUMMARY...Potent thunderstorms ahead of an approaching cold front will be capable of producing up to 2"/hr rainfall rates and localized max rainfall totals of 2-3" through this evening. Some training thunderstorm activity is possible, potentially leading to areas of flash flooding this evening. Urban locations and poor drainage spots are most at-risk. DISCUSSION...22Z surface analysis showed a cold front racing south and east through the heart of the Midwest being the culprit for initiating scattered thunderstorm development this afternoon. Some storms have formed out ahead of the front in far southern WI and northern IL as well. RAP mesoanalysis indicates the air-mass ahead of the front is highly unstable with MLCAPE approaching 3,000 J/kg over Iowa's nose. PWs are above 1.5" from the IA/IL border on east across northern IL. The 12Z DVN sounding showed a sounding favorable for discrete cells with effective layer shear between 35-40 kts and effective SRH >100 m2/s2. The sounding also showed the warm cloud layer was generally 10,000ft deep. Between the shear, more shallow warm cloud layer, and drier mid-level RH values, the soundings suggests the environment overall should limit the areal extent of the flash flood potential. Not only that, but mean cloud layer winds are 26 kts, so most storms will be moving along. That said, storms firing ahead of the cold front have moistened some of the soils in southern WI and northern IL to the point where additional storms that have produced between 1-1.5"/hr rainfall rates. 1-hr FFGs in some of the more urban areas of southern WI and northern IL are as low as 1.5". Latest 18Z HREF does show some low-to-moderate chance probabilities (20-40%) for 3-hr QPF surpassing 3-hr FFGs near the Chicago/Milwaukee metros. With these storms also encroaching upon the more populous areas of southern WI and northern IL, excessive rainfall rates approaching 2"/hr could lead to flash flooding in poor drainage areas within more heavily urbanized environments. Given those factors, progressive but potentially multiple rounds of storms could lead to some cases of flash flooding this evening. Mullinax ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...ARX...DVN...GRB...LOT...MKX... ATTN...RFC...MSR...NWC... LAT...LON 43968929 43898887 43808864 43608831 43368800 42808769 42358764 41978761 41628771 41298823 41188900 41318984 41499039 41619076 41879125 42269135 42609111 42899066 43419019 43678993 43898968