Severe

Significant threat to life or property

Michigan Severe Thunderstorm Warning | Effective 05/18/2026 00:55

SVRMQT The National Weather Service in Marquette has issued a * Severe Thunderstorm Warning for... North central Iron County in south central Upper Michigan... Southeastern Baraga County in north central Upper Michigan... * Until 430 AM EDT/330 AM CDT/. * At 354 AM EDT/254 AM CDT/, a severe thunderstorm was located over U.S. 141 between Covington and Amasa, or 20 miles north of Iron River, moving northeast at 55 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected.

Wyoming Winter Storm Warning | Effective 05/18/2026 00:31

* WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Persons should delay all travel if possible. If travel is absolutely

Wyoming Winter Storm Warning | Effective 05/18/2026 00:31

* WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. If you must travel, keep an extra flashlight, food, and water in

Wyoming Winter Storm Warning | Effective 05/18/2026 00:31

* WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden

Wyoming Winter Storm Warning | Effective 05/18/2026 00:31

* WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges

Wyoming Winter Storm Warning | Effective 05/18/2026 00:31

* WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages

New Mexico Red Flag Warning | Effective 05/18/2026 00:36

...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM TO 9 PM MDT TODAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR SOUTHWEST, CENTRAL AND EASTERN NEW MEXICO... .Another round of critical to extreme fire weather conditions is expected across southwest, central, and eastern New Mexico today after poor humidity recoveries and continued breezy conditions overnight. Winds will be even stronger across eastern New Mexico with gusts of 50 to 55+ mph. Several hours of single digit humidity

Iowa Severe Thunderstorm Watch | Effective 05/18/2026 00:01

SEVERE THUNDERSTORM WATCH 219 REMAINS VALID UNTIL 4 AM CDT EARLY THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 8 COUNTIES IN EAST CENTRAL IOWA CEDAR JOHNSON JONES IN NORTHEAST IOWA DUBUQUE IN SOUTHEAST IOWA HENRY IA JEFFERSON VAN BUREN WASHINGTON THIS INCLUDES THE CITIES OF ANAMOSA, DUBUQUE, FAIRFIELD, IOWA CITY, KEOSAUQUA, MOUNT PLEASANT, TIPTON, AND WASHINGTON.

Colorado Red Flag Warning | Effective 05/18/2026 00:04

* AFFECTED AREA...Fire Weather Zones 230 and 233. * TIMING...From 11 AM this morning to 8 PM MDT this evening. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Colorado Red Flag Warning | Effective 05/18/2026 00:04

* AFFECTED AREA...Fire Weather Zone 237. * TIMING...From 11 AM this morning to 8 PM MDT this evening. * WINDS...Southwest 25 to 35 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Extreme fire danger is expected. Fires will uncontrollably spread and be very destructive. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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