WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * 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. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening.* IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel