242 WWUS45 KMSO 171913 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 113 PM MDT Sat May 17 2025 IDZ006-181915- /O.UPG.KMSO.WS.A.0005.250518T0900Z-250518T2100Z/ /O.NEW.KMSO.WS.W.0007.250518T0900Z-250518T2100Z/ Southern Clearwater Mountains- 1213 PM PDT Sat May 17 2025 ...WINTER STORM WARNING IN EFFECT FROM 2 AM TO 2 PM PDT SUNDAY ABOVE 5000 FEET... * WHAT...Heavy snow expected above 5000 feet. Likelihood of major impacts from 6 to 10 inches of snow is 80 percent, and 10 to 18 inches of snow is 10 percent. * WHERE...Dixie and Lolo Pass. * WHEN...From 2 AM to 2 PM PDT Sunday. * IMPACTS...For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. 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. && $$ IDZ009-010-181915- /O.UPG.KMSO.WS.A.0005.250518T0900Z-250518T2100Z/ /O.NEW.KMSO.WS.W.0007.250518T0900Z-250518T2100Z/ Western Lemhi County-Eastern Lemhi County- 113 PM MDT Sat May 17 2025 ...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 3 PM MDT SUNDAY ABOVE 6000 FEET... * WHAT...Heavy snow expected above 6000 feet. Likelihood of major impacts from snow is up to 60 percent. Total snow accumulations 4 to 8 inches. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Bannock Pass, Highway 28 Tendoy to Lone Pine, and Williams Creek Summit. * WHEN...From 3 AM to 3 PM MDT Sunday. * IMPACTS...For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-181915- /O.UPG.KMSO.WS.A.0005.250518T0900Z-250518T2100Z/ /O.NEW.KMSO.WS.W.0007.250518T0900Z-250518T2100Z/ Bitterroot/Sapphire Mountains- 113 PM MDT Sat May 17 2025 ...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 3 PM MDT SUNDAY... * WHAT...Heavy snow expected. Likelihood of major impacts from 6 to 10 inches of snow is 60 percent, and 10 to 18 inches of snow is 10 percent. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 3 AM to 3 PM MDT Sunday. * IMPACTS...For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. 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. && $$ MTZ043-181915- /O.UPG.KMSO.WS.A.0005.250518T0900Z-250518T2100Z/ /O.NEW.KMSO.WS.W.0007.250518T0900Z-250518T2100Z/ Potomac/Seeley Lake Region- 113 PM MDT Sat May 17 2025 ...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 3 PM MDT SUNDAY... * WHAT...Heavy wet snow expected. Likelihood of major impacts from 6 to 10 inches of snow is 80 percent, and 10 to 18 inches of snow is 20 percent. * WHERE...Potomac/Seeley Lake Region. * WHEN...From 3 AM to 3 PM MDT Sunday. * IMPACTS...For MAJOR impacts from snow, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-181915- /O.NEW.KMSO.WW.Y.0034.250518T0900Z-250518T2100Z/ Butte/Blackfoot Region- 113 PM MDT Sat May 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 3 PM MDT SUNDAY ABOVE 6000 FEET... * WHAT...Wet snow expected above 6000 feet. Likelihood of moderate impacts from 3 to 6 inches of snow is greater than 90 percent, and up to a 50 percent chance of isolated major impacts from 6 to 10 inches or more of snow. * WHERE...Georgetown Lake and MacDonald Pass. * WHEN...From 3 AM to 3 PM MDT Sunday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. 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. && $$ MTZ002-181915- /O.NEW.KMSO.WW.Y.0034.250518T1200Z-250519T0000Z/ West Glacier Region- 113 PM MDT Sat May 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM MDT SUNDAY ABOVE 5000 FEET... * WHAT...Wet snow expected above 5000 feet. Likelihood of moderate impacts from 3 to 6 inches of snow is greater than 90 percent, and up to a 50 percent chance of isolated major impacts from 6 to 10 inches or more of snow. * WHERE...Marias Pass. * WHEN...From 6 AM to 6 PM MDT Sunday. * IMPACTS...For MODERATE impacts from snow, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$