248 WWUS75 KGJT 190722 NPWGJT URGENT - WEATHER MESSAGE National Weather Service Grand Junction CO 122 AM MDT Tue May 19 2026 COZ001-002-192000- /O.CON.KGJT.FZ.W.0019.000000T0000Z-260519T1600Z/ /O.CON.KGJT.FZ.W.0020.260520T0700Z-260520T1500Z/ Lower Yampa River Basin-Central Yampa River Basin- Including the cities of Rangely, Dinosaur, Dinosaur National Monument, Craig, Hayden, and Meeker 122 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM MDT WEDNESDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 20 expected. For the second Freeze Warning, sub-freezing temperatures as low as 22 expected. * WHERE...Central Yampa River Basin and Lower Yampa River Basin. * WHEN...For the first Freeze Warning, until 10 AM MDT this morning. For the second Freeze Warning, from 1 AM to 9 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ UTZ024-191600- /O.CON.KGJT.FZ.W.0019.000000T0000Z-260519T1600Z/ Eastern Uinta Basin- Including the cities of Vernal, Jensen, Ballard, Fort Duchesne, Randlett, and Dinosaur National Monument 122 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25. * WHERE...Eastern Uinta Basin. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ GJT  372 WWUS71 KPHI 190726 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 326 AM EDT Tue May 19 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Mount Holly, Cherry Hill, Camden, Media, West Chester, Morrisville, Doylestown, Moorestown, Lansdale, Glassboro, Norristown, Philadelphia, Trenton, Kennett Square, and Wilmington 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Morristown, Reading, Bethlehem, Chalfont, Somerville, Washington, Collegeville, Honey Brook, Perkasie, Flemington, Pottstown, Allentown, and Easton 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through today, with maximum heat indices of 95 to near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of New Brunswick, Jackson, Freehold, and Wharton State Forest 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL  356 WWUS73 KFSD 190743 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 243 AM CDT Tue May 19 2026 SDZ038>040-052-053-191745- /O.NEW.KFSD.FZ.W.0003.260520T0600Z-260520T1300Z/ Beadle-Kingsbury-Brookings-Jerauld-Sanborn- Including the cities of Alpena, Arlington, Lake Preston, Huron, Wessington Springs, Woonsocket, De Smet, and Brookings 243 AM CDT Tue May 19 2026 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM CDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Jerauld, Beadle, Brookings, Kingsbury, and Sanborn Counties. * WHEN...From 1 AM to 8 AM CDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ050-054>071-191745- /O.NEW.KFSD.FR.Y.0006.260520T0600Z-260520T1300Z/ Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Gregory-Miner-Lake-Moody-Brule-Aurora- Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson- Turner-Lincoln-Bon Homme-Yankton-Clay-Union- Including the cities of Yankton, Burke, South Sioux City, Beresford, Ponca, Clayton, Le Mars, North Sioux City, Menno, Sioux City, Fulda, Montrose, Salem, Springfield, Tyndall, Tyler, Wagner, Ivanhoe, Wakefield, Hull, Storm Lake, Windom, Gregory, Avon, Lake Andes, Delmont, Spencer, Mountain Lake, Lennox, Centerville, Corsica, Alcester, Battle Creek, Madison, Stickney, Plankinton, Hawarden, Rock Valley, Jackson, Hartley, Kimball, Armour, Hurley, Flandreau, Freeman, Chamberlain, Chancellor, Scotland, Parker, Tea, Tabor, Spirit Lake, Canistota, Jefferson, White Lake, Marshall, Larchwood, Inwood, Allen, Arnolds Park, Platte, Alexandria, Parkston, Bridgewater, Irene, Elk Point, Orland, Emery, Luverne, Hendricks, Lake Benton, Canton, Cherokee, Viborg, Sioux Center, Sibley, Holstein, Tripp, Sioux Falls, Harrisburg, Marty, Sheldon, Marion, Milford, Pipestone, Rock Rapids, Lakefield, Ida Grove, Howard, Sanborn, Slayton, Orange City, George, Worthington, Mitchell, and Vermillion 243 AM CDT Tue May 19 2026 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT WEDNESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska, and east central, south central, and southeast South Dakota. * WHEN...From 1 AM to 8 AM CDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ SG  376 WWUS75 KPIH 190744 NPWPIH URGENT - WEATHER MESSAGE National Weather Service Pocatello ID 144 AM MDT Tue May 19 2026 IDZ052>054-191500- /O.CON.KPIH.FZ.W.0016.000000T0000Z-260519T1500Z/ Arco/Mud Lake Desert-Upper Snake River Plain-Lower Snake River Plain- Including the cities of Fort Hall, Mud Lake, Shelley, St. Anthony, Idaho Falls, Rexburg, INL, Pocatello, Craters of the Moon NM, American Falls, and Blackfoot 144 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 degrees. More populated areas will be around to 28 to 32 degrees. * WHERE...Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...Until 9 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ IDZ051-055-191500- /O.CON.KPIH.FR.Y.0006.260519T0900Z-260519T1500Z/ Shoshone/Lava Beds-Eastern Magic Valley- Including the cities of Heyburn, Rupert, Burley, Oakley, Carey, Richfield, and Shoshone 144 AM MDT Tue May 19 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT THIS MORNING... * WHAT...Temperatures from 32 to 36 degrees will result in frost formation. * WHERE...Eastern Magic Valley and Shoshone/Lava Beds. * WHEN...Until 9 AM MDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit weather.gov/pocatello for more information. JKeyes