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Home Return to list Winter Storm Warning 0012 Issued by the Missoula Forecast Office
Action: New Issued At: 2025-12-04 14:02:57 478 WWUS45 KMSO 042002 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 102 PM MST Thu Dec 4 2025 ...PROLONGED SNOW EVENT... .A plume of snow will continue to impacted north central Idaho into west central and southwest Montana tonight. The snow activity will decrease in intensity during the day on Friday, then a second plume of precipitation will impact the region late Friday through Saturday. IDZ005-006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1202 PM PST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Elk River, Elk City, Pierce, and Dixie. * WHEN...From 4 PM this afternoon to 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ004-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Lower Clark Fork Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and Evaro Hill. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ043-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to 3 inches in the valleys and 4 to 9 inches in the higher terrain and mountain passes. * WHERE...Highway 28 Tendoy to Lone Pine, Lemhi Pass, Shoup, Bannock Pass, Williams Creek Summit, Highway 93 Lost Trail Pass to Gibbonsville, and Salmon. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ003-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Flathead/Mission Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 4 inches mainly in the Mission Valley. * WHERE...Flathead Valley, Mission Valley, Polson, and Flathead Lake. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Missoula/Bitterroot Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 3 inches mainly in the Missoula Valley and benches in the Bitterroot Valley. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ007-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Butte/Blackfoot Region- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, MacDonald Pass, Butte, Georgetown Lake, and Homestake Pass. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-052015- /O.EXT.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 10 and 25 inches possible. Winds could gust as high as 40 mph. * WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, Bad Rock Canyon, and Essex. * WHEN...From Friday afternoon through Sunday morning. * IMPACTS...For MAJOR winter weather impacts, 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. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: New Issued At: 2025-12-04 14:02:57 478 WWUS45 KMSO 042002 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 102 PM MST Thu Dec 4 2025 ...PROLONGED SNOW EVENT... .A plume of snow will continue to impacted north central Idaho into west central and southwest Montana tonight. The snow activity will decrease in intensity during the day on Friday, then a second plume of precipitation will impact the region late Friday through Saturday. IDZ005-006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1202 PM PST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Elk River, Elk City, Pierce, and Dixie. * WHEN...From 4 PM this afternoon to 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Lower Clark Fork Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and Evaro Hill. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ IDZ009-010-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to 3 inches in the valleys and 4 to 9 inches in the higher terrain and mountain passes. * WHERE...Highway 28 Tendoy to Lone Pine, Lemhi Pass, Shoup, Bannock Pass, Williams Creek Summit, Highway 93 Lost Trail Pass to Gibbonsville, and Salmon. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ003-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Flathead/Mission Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 4 inches mainly in the Mission Valley. * WHERE...Flathead Valley, Mission Valley, Polson, and Flathead Lake. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ005-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Missoula/Bitterroot Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 3 inches mainly in the Missoula Valley and benches in the Bitterroot Valley. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Butte/Blackfoot Region- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, MacDonald Pass, Butte, Georgetown Lake, and Homestake Pass. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...For MODERATE winter weather impacts, 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. && $$ MTZ002-052015- /O.EXT.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 10 and 25 inches possible. Winds could gust as high as 40 mph. * WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, Bad Rock Canyon, and Essex. * WHEN...From Friday afternoon through Sunday morning. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: New Issued At: 2025-12-04 14:02:57 478 WWUS45 KMSO 042002 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 102 PM MST Thu Dec 4 2025 ...PROLONGED SNOW EVENT... .A plume of snow will continue to impacted north central Idaho into west central and southwest Montana tonight. The snow activity will decrease in intensity during the day on Friday, then a second plume of precipitation will impact the region late Friday through Saturday. IDZ005-006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1202 PM PST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Elk River, Elk City, Pierce, and Dixie. * WHEN...From 4 PM this afternoon to 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ004-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Lower Clark Fork Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and Evaro Hill. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ043-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to 3 inches in the valleys and 4 to 9 inches in the higher terrain and mountain passes. * WHERE...Highway 28 Tendoy to Lone Pine, Lemhi Pass, Shoup, Bannock Pass, Williams Creek Summit, Highway 93 Lost Trail Pass to Gibbonsville, and Salmon. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ003-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Flathead/Mission Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 4 inches mainly in the Mission Valley. * WHERE...Flathead Valley, Mission Valley, Polson, and Flathead Lake. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Missoula/Bitterroot Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 3 inches mainly in the Missoula Valley and benches in the Bitterroot Valley. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ007-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Butte/Blackfoot Region- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, MacDonald Pass, Butte, Georgetown Lake, and Homestake Pass. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-052015- /O.EXT.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 10 and 25 inches possible. Winds could gust as high as 40 mph. * WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, Bad Rock Canyon, and Essex. * WHEN...From Friday afternoon through Sunday morning. * IMPACTS...For MAJOR winter weather impacts, 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. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: New Issued At: 2025-12-04 14:02:57 478 WWUS45 KMSO 042002 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 102 PM MST Thu Dec 4 2025 ...PROLONGED SNOW EVENT... .A plume of snow will continue to impacted north central Idaho into west central and southwest Montana tonight. The snow activity will decrease in intensity during the day on Friday, then a second plume of precipitation will impact the region late Friday through Saturday. IDZ005-006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1202 PM PST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Elk River, Elk City, Pierce, and Dixie. * WHEN...From 4 PM this afternoon to 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Lower Clark Fork Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and Evaro Hill. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ006-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-052015- /O.UPG.KMSO.WS.A.0010.251205T1200Z-251207T0000Z/ /O.NEW.KMSO.WS.W.0012.251205T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ IDZ009-010-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations up to 3 inches in the valleys and 4 to 9 inches in the higher terrain and mountain passes. * WHERE...Highway 28 Tendoy to Lone Pine, Lemhi Pass, Shoup, Bannock Pass, Williams Creek Summit, Highway 93 Lost Trail Pass to Gibbonsville, and Salmon. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ003-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Flathead/Mission Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 4 inches mainly in the Mission Valley. * WHERE...Flathead Valley, Mission Valley, Polson, and Flathead Lake. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. 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. && $$ MTZ005-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Missoula/Bitterroot Valleys- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations up to 3 inches mainly in the Missoula Valley and benches in the Bitterroot Valley. * WHERE...Missoula and Bitterroot Valley. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-051800- /O.NEW.KMSO.WW.Y.0046.251205T0000Z-251205T1800Z/ Butte/Blackfoot Region- 102 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST FRIDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, MacDonald Pass, Butte, Georgetown Lake, and Homestake Pass. * WHEN...From 5 PM this afternoon to 11 AM MST Friday. * IMPACTS...For MODERATE winter weather impacts, 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. && $$ MTZ002-052015- /O.EXT.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 102 PM MST Thu Dec 4 2025 ...WINTER STORM WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 10 and 25 inches possible. Winds could gust as high as 40 mph. * WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, Bad Rock Canyon, and Essex. * WHEN...From Friday afternoon through Sunday morning. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: Continued Issued At: 2025-12-05 03:22:46 044 WWUS45 KMSO 050922 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 222 AM MST Fri Dec 5 2025 MTZ003-051030- /O.CAN.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Flathead/Mission Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... $$ IDZ005-006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 122 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Pierce, Dixie, Elk River, and Elk City. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, Evaro Hill, and Highway 200 Thompson Falls to Plains. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ005-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...North of Hamilton in the Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations between 1 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Butte, Georgetown Lake, Homestake Pass, Highway 12 Garrison to Elliston, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ IDZ009-010-051800- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations up to one inch. * WHERE...Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, Shoup, Salmon, Bannock Pass, Williams Creek Summit, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 11 AM MST this morning. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-060930- /O.CON.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 2 and 28 inches possible. Winds could gust as high as 40 mph. * WHERE...Essex, Glacier National Park, Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Polebridge, and Marias Pass. * WHEN...From this afternoon through Sunday morning. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, 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. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: Continued Issued At: 2025-12-05 03:22:46 044 WWUS45 KMSO 050922 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 222 AM MST Fri Dec 5 2025 MTZ003-051030- /O.CAN.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Flathead/Mission Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... $$ IDZ005-006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 122 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Pierce, Dixie, Elk River, and Elk City. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ004-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, Evaro Hill, and Highway 200 Thompson Falls to Plains. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ043-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...North of Hamilton in the Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ007-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations between 1 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Butte, Georgetown Lake, Homestake Pass, Highway 12 Garrison to Elliston, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-051800- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations up to one inch. * WHERE...Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, Shoup, Salmon, Bannock Pass, Williams Creek Summit, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 11 AM MST this morning. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning commute, especially over higher passes. 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. && $$ MTZ002-060930- /O.CON.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 2 and 28 inches possible. Winds could gust as high as 40 mph. * WHERE...Essex, Glacier National Park, Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Polebridge, and Marias Pass. * WHEN...From this afternoon through Sunday morning. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: Continued Issued At: 2025-12-05 03:22:46 044 WWUS45 KMSO 050922 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 222 AM MST Fri Dec 5 2025 MTZ003-051030- /O.CAN.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Flathead/Mission Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... $$ IDZ005-006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 122 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Pierce, Dixie, Elk River, and Elk City. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, Evaro Hill, and Highway 200 Thompson Falls to Plains. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ005-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...North of Hamilton in the Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ007-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations between 1 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Butte, Georgetown Lake, Homestake Pass, Highway 12 Garrison to Elliston, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ IDZ009-010-051800- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations up to one inch. * WHERE...Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, Shoup, Salmon, Bannock Pass, Williams Creek Summit, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 11 AM MST this morning. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ002-060930- /O.CON.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 2 and 28 inches possible. Winds could gust as high as 40 mph. * WHERE...Essex, Glacier National Park, Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Polebridge, and Marias Pass. * WHEN...From this afternoon through Sunday morning. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, 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. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: Continued Issued At: 2025-12-05 03:22:46 044 WWUS45 KMSO 050922 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 222 AM MST Fri Dec 5 2025 MTZ003-051030- /O.CAN.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Flathead/Mission Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... $$ IDZ005-006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 122 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to Lolo Pass, Pierce, Dixie, Elk River, and Elk City. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ004-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to Heron, Evaro Hill, and Highway 200 Thompson Falls to Plains. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ006-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ043-060930- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to Bearmouth, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...North of Hamilton in the Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. 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. && $$ MTZ007-060600- /O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations between 1 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Butte, Georgetown Lake, Homestake Pass, Highway 12 Garrison to Elliston, and MacDonald Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-010-051800- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 222 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow. There is a likelihood of developing or ongoing minor winter weather impacts. Additional snow accumulations up to one inch. * WHERE...Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, Shoup, Salmon, Bannock Pass, Williams Creek Summit, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 11 AM MST this morning. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday morning commute, especially over higher passes. 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. && $$ MTZ002-060930- /O.CON.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ West Glacier Region- 222 AM MST Fri Dec 5 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING... * WHAT...Heavy snow possible. There is a chance of moderate to major winter weather impacts. Total snow accumulations between 2 and 28 inches possible. Winds could gust as high as 40 mph. * WHERE...Essex, Glacier National Park, Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, Polebridge, and Marias Pass. * WHEN...From this afternoon through Sunday morning. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Action: Continued Issued At: 2025-12-05 12:08:49 843 WWUS45 KMSO 051808 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1108 AM MST Fri Dec 5 2025 IDZ009-010-051915- /O.EXP.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY HAS EXPIRED... Conditions have improved. $$ IDZ005-006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1008 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Pierce, Highway 11 Pierce to Headquarters, Elk City, Elk River, Highway 12 Lowell to Lolo Pass, and Dixie. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...Evaro Hill, I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, and Highway 200 Trout Creek to Heron. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ002-061815- /O.UPG.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ /O.EXB.KMSO.WW.Y.0046.251206T0000Z-251207T0000Z/ West Glacier Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations 1 to 3 inches in the valleys and 5 to 8 inches in the higher terrain including Marias Pass. * WHERE...Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Essex, Glacier National Park, and Bad Rock Canyon. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ007-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, Georgetown Lake, Butte, MacDonald Pass, and Homestake Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Continued Issued At: 2025-12-05 12:08:49 843 WWUS45 KMSO 051808 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1108 AM MST Fri Dec 5 2025 IDZ009-010-051915- /O.EXP.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY HAS EXPIRED... Conditions have improved. $$ IDZ005-006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1008 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Pierce, Highway 11 Pierce to Headquarters, Elk City, Elk River, Highway 12 Lowell to Lolo Pass, and Dixie. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...Evaro Hill, I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, and Highway 200 Trout Creek to Heron. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ002-061815- /O.UPG.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ /O.EXB.KMSO.WW.Y.0046.251206T0000Z-251207T0000Z/ West Glacier Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations 1 to 3 inches in the valleys and 5 to 8 inches in the higher terrain including Marias Pass. * WHERE...Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Essex, Glacier National Park, and Bad Rock Canyon. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ007-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, Georgetown Lake, Butte, MacDonald Pass, and Homestake Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Continued Issued At: 2025-12-05 12:08:49 843 WWUS45 KMSO 051808 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1108 AM MST Fri Dec 5 2025 IDZ009-010-051915- /O.EXP.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY HAS EXPIRED... Conditions have improved. $$ IDZ005-006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1008 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Pierce, Highway 11 Pierce to Headquarters, Elk City, Elk River, Highway 12 Lowell to Lolo Pass, and Dixie. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...Evaro Hill, I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, and Highway 200 Trout Creek to Heron. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ002-061815- /O.UPG.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ /O.EXB.KMSO.WW.Y.0046.251206T0000Z-251207T0000Z/ West Glacier Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations 1 to 3 inches in the valleys and 5 to 8 inches in the higher terrain including Marias Pass. * WHERE...Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Essex, Glacier National Park, and Bad Rock Canyon. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ007-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, Georgetown Lake, Butte, MacDonald Pass, and Homestake Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Continued Issued At: 2025-12-05 12:08:49 843 WWUS45 KMSO 051808 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1108 AM MST Fri Dec 5 2025 IDZ009-010-051915- /O.EXP.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/ Western Lemhi County-Eastern Lemhi County- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY HAS EXPIRED... Conditions have improved. $$ IDZ005-006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1008 AM PST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 2 to 6 inches in the valleys and 9 to 18 inches in the higher terrain including Lolo Pass. * WHERE...Pierce, Highway 11 Pierce to Headquarters, Elk City, Elk River, Highway 12 Lowell to Lolo Pass, and Dixie. * WHEN...Until 4 PM PST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Lower Clark Fork Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations of 1 to 4 inches in the valleys and 8 to 14 inches in the higher terrain including Lookout Pass and Evaro Hill. * WHERE...Evaro Hill, I-90 Lookout Pass to Haugan, Highway 200 Thompson Falls to Plains, and Highway 200 Trout Creek to Heron. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ006-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Bitterroot/Sapphire Mountains- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter storm impacts. Total snow accumulations 1 to 5 inches in the valleys and 8 to 15 inches in the higher terrain including Lolo and Lost Trail Passes. Winds gusting as high as 40 mph on Friday. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ043-061815- /O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Potomac/Seeley Lake Region- 1108 AM MST Fri Dec 5 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Heavy Snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 to 10 inches. * WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to Condon, and Highway 200 Bonner to Greenough. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ002-061815- /O.UPG.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/ /O.EXB.KMSO.WW.Y.0046.251206T0000Z-251207T0000Z/ West Glacier Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations 1 to 3 inches in the valleys and 5 to 8 inches in the higher terrain including Marias Pass. * WHERE...Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Essex, Glacier National Park, and Bad Rock Canyon. * WHEN...From 5 PM this afternoon to 5 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ005-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Missoula/Bitterroot Valleys- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow. A lull in precipitation is expected through 2 pm. Then moderate to heavy snow showers are expected. Snow rates of 0.50 to 1 inch per hour possible along with wind gusts up to 40 mph. * WHERE...Bitterroot Valley and Missoula. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. 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. && $$ MTZ007-060600- /O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/ Butte/Blackfoot Region- 1108 AM MST Fri Dec 5 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations up to 6 inches. * WHERE...Highway 12 Garrison to Elliston, Georgetown Lake, Butte, MacDonald Pass, and Homestake Pass. * WHEN...Until 11 PM MST this evening. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Cancelled Issued At: 2025-12-06 11:25:18 335 WWUS45 KMSO 061724 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1024 AM MST Sat Dec 6 2025 IDZ005-006-MTZ004-006-043-061830- /O.CAN.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/ Northern Clearwater Mountains-Southern Clearwater Mountains-Lower Clark Fork Region-Bitterroot/Sapphire Mountains-Potomac/Seeley Lake Region- 1024 AM MST Sat Dec 6 2025 /924 AM PST Sat Dec 6 2025/ ...WINTER STORM WARNING IS CANCELLED... Snow levels have risen to where the snow is mainly just impacting the mountain passes at times. $$ MTZ002-061830- /O.CAN.KMSO.WW.Y.0046.000000T0000Z-251207T0000Z/ West Glacier Region- 1024 AM MST Sat Dec 6 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow levels have risen to where the snow is mainly just impacting the mountain pass at times. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||