501 WWUS75 KSLC 182322 NPWSLC URGENT - WEATHER MESSAGE National Weather Service Salt Lake City UT 522 PM MDT Mon May 18 2026 UTZ103-106-191500- /O.EXA.KSLC.FZ.W.0020.260519T0600Z-260519T1500Z/ Eastern Box Elder County-Utah Valley- Including the following locations - Snowville, Lehi, Provo, Payson, and Brigham City 522 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s to low 30s expected. * WHERE...Eastern Box Elder County and Utah Valley. * WHEN...From midnight tonight to 9 AM MDT Tuesday. * 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. Drain in-ground sprinkler systems and cover above ground pipes. && $$ UTZ107-108-114>116-118>120-122-191500- /O.CON.KSLC.FZ.W.0020.260519T0600Z-260519T1500Z/ Cache Valley/Utah Portion-Wasatch Back-Western Uinta Basin- Western Millard and Juab Counties-Eastern Juab/Millard Counties- Sanpete Valley-Sevier Valley-Castle Country-Southwest Utah- Including the following locations - Price, Mt Pleasant, Duchesne, Smithfield, Park City, Emery, Cedar City, Logan, Salina, Delta, Huntsville, Nephi, Manti, Fillmore, Richfield, Castle Dale, Ephraim, Beaver, Little Sahara, Heber City, Milford, Roosevelt, and Scipio 522 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Castle Country, Eastern Juab/Millard Counties, Sanpete Valley, Sevier Valley, Western Millard and Juab Counties, Cache Valley/Utah Portion, Wasatch Back, Western Uinta Basin, and Southwest Utah. * WHEN...From midnight tonight to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Drain in-ground sprinkler systems and cover above ground pipes. && $$ For more information from the National Weather Service visit https://weather.gov/saltlakecity. For information on potential travel impacts visit http://udottraffic.utah.gov LC  341 WWUS75 KPUB 182352 NPWPUB URGENT - WEATHER MESSAGE National Weather Service Pueblo CO 552 PM MDT Mon May 18 2026 COZ069>071-190100- /O.EXP.KPUB.DU.Y.0004.000000T0000Z-260519T0000Z/ Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Including Fort Garland, Sanford, Del Norte, Alamosa, Center, Monte Vista, Blanca, San Luis, Manassa, Antonito, and La Jara 552 PM MDT Mon May 18 2026 ...BLOWING DUST ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING... The threat has ended. $$ COZ084-190800- /O.CON.KPUB.FZ.W.0004.260519T0600Z-260519T1400Z/ Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Including Black Forest 552 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 28 degrees expected. * WHERE...Northern El Paso. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ COZ085>089-094>096-190800- /O.CON.KPUB.FR.Y.0002.260519T0600Z-260519T1400Z/ Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County- Including Colorado Springs, Olney Springs, Branson, Trinidad, Sheridan Lake, Walsenburg, Peterson Space Force Base, Kim, Ordway, Pueblo, and Eads 552 PM MDT Mon May 18 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Kiowa, Southern El Paso, Pueblo, Crowley, Eastern Las Animas, Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet, and Trinidad Vicinity/Western Las Animas County Below 7500 Feet. * WHEN...From midnight tonight to 8 AM MDT Tuesday. * 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. && $$ Visit us at http://www.weather.gov/pub Simcoe  558 WWUS73 KDLH 182356 NPWDLH URGENT - WEATHER MESSAGE National Weather Service Duluth MN 656 PM CDT Mon May 18 2026 MNZ037-WIZ001-190300- /O.NEW.KDLH.FG.Y.0015.260518T2356Z-260519T0300Z/ Carlton and South St. Louis-Douglas- Including the cities of Superior and Duluth 656 PM CDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...Visibility less than one quarter of a mile in dense fog. * WHERE...In Minnesota, Carlton and South St. Louis Counties. In Wisconsin, Douglas County. This includes the Tribal Lands of the Fond du Lac Band. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Localized in nature and it may not last long as incoming storms should help to mix it out. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you. && $$ For more information on Northland weather, visit www.weather. gov/duluth Wolfe  555 WWUS73 KMQT 182356 NPWMQT URGENT - WEATHER MESSAGE National Weather Service Marquette MI 756 PM EDT Mon May 18 2026 MIZ005-190600- /O.NEW.KMQT.FG.Y.0007.260519T0000Z-260519T0600Z/ Marquette- Including the cities of Marquette and Gwinn 756 PM EDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... * WHAT...Visibility 1/4 mile or less in dense fog. * WHERE...Marquette County. * WHEN...Until 2 AM EDT Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ TAP  572 WWUS75 KRIW 182357 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 557 PM MDT Mon May 18 2026 WYZ003>006-010-011-191500- /O.NEW.KRIW.FZ.W.0003.260519T0300Z-260519T1500Z/ Cody Foothills-North Bighorn Basin-Southwest Bighorn Basin- Southeast Bighorn Basin-Northeast Johnson County-Southeast Johnson County- Including the cities of Greybull, Worland, Meeteetse, Kaycee, Clark, Cody, Powell, Shell, Lovell, Ten Sleep, Basin, Thermopolis, and Buffalo 557 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM MDT TUESDAY... * WHAT...Low temperatures of 24 to 28 degrees. * WHERE...Southwest Bighorn Basin, Northeast Johnson County, Southeast Bighorn Basin, Southeast Johnson County, Cody Foothills, and North Bighorn Basin. * WHEN...From 9 PM Monday evening to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...A clearing sky overnight will allow for temperatures to fall well below seasonal normals. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent water pipes from freezing, wrap or drain water lines. && $$ WYZ016>020-191500- /O.NEW.KRIW.FZ.W.0003.260519T0300Z-260519T1500Z/ Upper Wind River Basin-Wind River Basin-Lander Foothills-Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper, Lander, Jeffrey City, Riverton, Shoshoni, and Dubois 557 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM MDT TUESDAY... * WHAT...Low temperatures of 20 to 24 degrees, with colder temperatures of 15 to 20 degrees possible in snow-covered areas above 6,000 feet. * WHERE...Green Mountains and Rattlesnake Range, Lander Foothills, Natrona County Lower Elevations, Upper Wind River Basin, and Wind River Basin. * WHEN...From 9 PM Monday evening to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Overnight lows could be a few degrees warmer if cloud cover does not clear early Tuesday. Sub-freezing temperatures would still occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent water pipes from freezing, wrap or drain water lines. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . CNJ