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Home Return to list Winter Weather Advisory 0049 Issued by the Missoula Forecast Office
Action: New Issued At: 2025-12-17 13:44:20 968 WWUS45 KMSO 171943 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1243 PM MST Wed Dec 17 2025 MTZ002-180600- /O.CON.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ West Glacier Region- 1243 PM MST Wed Dec 17 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow. There is a likelihood of ongoing major winter weather impacts. Additional snow accumulations up to two inches. Winds gusting as high as 55 mph. * WHERE...Marias Pass, Bad Rock Canyon, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, and Essex. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. 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 Wednesday evening commute, especially over higher passes. Strong winds could cause tree damage. 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. && $$ IDZ006-MTZ006-181945- /O.UPG.KMSO.WS.A.0012.251218T1200Z-251220T1200Z/ /O.NEW.KMSO.WW.Y.0049.251219T0000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 1243 PM MST Wed Dec 17 2025 /1143 AM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM MST /4 PM PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor winter weather impacts. Total snow accumulations between 8 and 15 inches higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Dixie, Highway 12 Lowell to Lolo Pass, Highway 93 Sula to Lost Trail Pass, Lolo Pass, and Elk City. * WHEN...From 5 PM MST /4 PM PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-181945- /O.NEW.KMSO.WW.Y.0049.251219T0000Z-251220T1800Z/ Lower Clark Fork Region- 1243 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor winter weather impacts. Total snow accumulations 4 to 7 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 5 PM Thursday to 11 AM MST Saturday. * 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 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. && $$ Action: New Issued At: 2025-12-17 13:44:20 968 WWUS45 KMSO 171943 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1243 PM MST Wed Dec 17 2025 MTZ002-180600- /O.CON.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ West Glacier Region- 1243 PM MST Wed Dec 17 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow. There is a likelihood of ongoing major winter weather impacts. Additional snow accumulations up to two inches. Winds gusting as high as 55 mph. * WHERE...Marias Pass, Bad Rock Canyon, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, and Essex. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Wednesday evening commute, especially over higher passes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ006-MTZ006-181945- /O.UPG.KMSO.WS.A.0012.251218T1200Z-251220T1200Z/ /O.NEW.KMSO.WW.Y.0049.251219T0000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 1243 PM MST Wed Dec 17 2025 /1143 AM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM MST /4 PM PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor winter weather impacts. Total snow accumulations between 8 and 15 inches higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Dixie, Highway 12 Lowell to Lolo Pass, Highway 93 Sula to Lost Trail Pass, Lolo Pass, and Elk City. * WHEN...From 5 PM MST /4 PM PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * 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 Thursday 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. && $$ MTZ004-181945- /O.NEW.KMSO.WW.Y.0049.251219T0000Z-251220T1800Z/ Lower Clark Fork Region- 1243 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor winter weather impacts. Total snow accumulations 4 to 7 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 5 PM Thursday to 11 AM MST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Time Extended Issued At: 2025-12-17 14:24:21 043 WWUS45 KMSO 172024 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 124 PM MST Wed Dec 17 2025 MTZ002-180600- /O.CON.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ West Glacier Region- 124 PM MST Wed Dec 17 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow. There is a likelihood of developing or ongoing major winter weather impacts. Additional snow accumulations up to one inch. Winds gusting as high as 55 mph. * WHERE...Marias Pass, Bad Rock Canyon, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, and Essex. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. 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 Wednesday evening commute, especially over higher passes. Strong winds could cause tree damage. 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. && $$ IDZ006-MTZ006-182030- /O.EXT.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 124 PM MST Wed Dec 17 2025 /1224 PM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 PM MST /NOON PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 9 and 15 inches in higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Dixie, Highway 12 Lowell to Lolo Pass, Highway 93 Sula to Lost Trail Pass, Lolo Pass, and Elk City. * WHEN...From 1 PM MST /noon PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-182030- /O.EXT.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 124 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 5 to 9 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * 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 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. && $$ Action: Time Extended Issued At: 2025-12-17 14:24:21 043 WWUS45 KMSO 172024 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 124 PM MST Wed Dec 17 2025 MTZ002-180600- /O.CON.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ West Glacier Region- 124 PM MST Wed Dec 17 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow. There is a likelihood of developing or ongoing major winter weather impacts. Additional snow accumulations up to one inch. Winds gusting as high as 55 mph. * WHERE...Marias Pass, Bad Rock Canyon, Highway 83 Bigfork to Swan Lake, Polebridge, Glacier National Park, and Essex. * WHEN...Until 11 PM MST this evening. * IMPACTS...Winter traveling conditions. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Wednesday evening commute, especially over higher passes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ006-MTZ006-182030- /O.EXT.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 124 PM MST Wed Dec 17 2025 /1224 PM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 PM MST /NOON PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 9 and 15 inches in higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Dixie, Highway 12 Lowell to Lolo Pass, Highway 93 Sula to Lost Trail Pass, Lolo Pass, and Elk City. * WHEN...From 1 PM MST /noon PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * 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 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. && $$ MTZ004-182030- /O.EXT.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 124 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 5 to 9 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Continued Issued At: 2025-12-17 20:11:29 858 WWUS45 KMSO 180210 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 710 PM MST Wed Dec 17 2025 MTZ002-201800- /O.CAN.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ /O.EXA.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 8 inches at Marias Pass, 2 and 4 inches at West Glacier, and 8 to 12 inches above Marias Pass. Winds gusting as high as 45 mph. * WHERE...Bad Rock Canyon, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Essex. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * 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 Thursday morning and evening commutes, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ006-MTZ006-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 710 PM MST Wed Dec 17 2025 /610 PM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM MST /NOON PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 9 and 15 inches in higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, Lolo Pass, Highway 93 Sula to Lost Trail Pass, and Elk City. * WHEN...From 1 PM MST /noon PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 5 to 9 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * 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 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. && $$ Action: Continued Issued At: 2025-12-17 20:11:29 858 WWUS45 KMSO 180210 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 710 PM MST Wed Dec 17 2025 MTZ002-201800- /O.CAN.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ /O.EXA.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 8 inches at Marias Pass, 2 and 4 inches at West Glacier, and 8 to 12 inches above Marias Pass. Winds gusting as high as 45 mph. * WHERE...Bad Rock Canyon, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Essex. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday morning and evening commutes, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ006-MTZ006-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 710 PM MST Wed Dec 17 2025 /610 PM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM MST /NOON PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 9 and 15 inches in higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, Lolo Pass, Highway 93 Sula to Lost Trail Pass, and Elk City. * WHEN...From 1 PM MST /noon PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * 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 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. && $$ MTZ004-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 5 to 9 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Action: Area Extended Issued At: 2025-12-17 20:11:29 858 WWUS45 KMSO 180210 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 710 PM MST Wed Dec 17 2025 MTZ002-201800- /O.CAN.KMSO.WS.W.0013.000000T0000Z-251218T0600Z/ /O.EXA.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 8 inches at Marias Pass, 2 and 4 inches at West Glacier, and 8 to 12 inches above Marias Pass. Winds gusting as high as 45 mph. * WHERE...Bad Rock Canyon, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Essex. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * 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 Thursday morning and evening commutes, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ006-MTZ006-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains-Bitterroot/Sapphire Mountains- 710 PM MST Wed Dec 17 2025 /610 PM PST Wed Dec 17 2025/ ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM MST /NOON PST/ THURSDAY TO 11 AM MST /10 AM PST/ SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations between 9 and 15 inches in higher elevations and 5 to 9 inches at Lolo and Lost Trail Passes. Winds gusting as high as 40 mph. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, Lolo Pass, Highway 93 Sula to Lost Trail Pass, and Elk City. * WHEN...From 1 PM MST /noon PST/ Thursday to 11 AM MST /10 AM PST/ Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. Avoid travel in the impacted areas if possible. Widespread closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-201800- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 710 PM MST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of minor to moderate winter weather impacts. Total snow accumulations 5 to 9 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * 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 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. && $$ Action: Continued Issued At: 2025-12-18 01:26:36 025 WWUS45 KMSO 180726 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1226 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-191915- /O.UPG.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ /O.NEW.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1226 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THURSDAY TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM Thursday to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 1126 PM PST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon Thursday to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-18 01:26:36 025 WWUS45 KMSO 180726 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1226 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-191915- /O.UPG.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ /O.NEW.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1226 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THURSDAY TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM Thursday to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 1126 PM PST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon Thursday to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-18 01:26:36 025 WWUS45 KMSO 180726 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1226 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-191915- /O.UPG.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ /O.NEW.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1226 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THURSDAY TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM Thursday to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 1126 PM PST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon Thursday to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Upgraded Issued At: 2025-12-18 01:26:36 025 WWUS45 KMSO 180726 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1226 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-191915- /O.UPG.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ /O.NEW.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1226 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THURSDAY TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM Thursday to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 1126 PM PST Wed Dec 17 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon Thursday to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-191915- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 1226 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THURSDAY TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM Thursday to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-18 03:34:34 172 WWUS45 KMSO 180934 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 234 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-190945- /O.CON.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 234 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ009-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Western Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM 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. && $$ IDZ010-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Eastern Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ IDZ006-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 134 AM PST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Time and Area Extended Issued At: 2025-12-18 03:34:34 172 WWUS45 KMSO 180934 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 234 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-190945- /O.CON.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 234 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ009-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Western Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM 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. && $$ IDZ010-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Eastern Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ IDZ006-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 134 AM PST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-18 03:34:34 172 WWUS45 KMSO 180934 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 234 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-190945- /O.CON.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 234 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ009-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Western Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM 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. && $$ IDZ010-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Eastern Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ IDZ006-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 134 AM PST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Time and Area Extended Issued At: 2025-12-18 03:34:34 172 WWUS45 KMSO 180934 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 234 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-190945- /O.CON.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 234 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ009-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Western Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM 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. && $$ IDZ010-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Eastern Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ IDZ006-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 134 AM PST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-18 03:34:34 172 WWUS45 KMSO 180934 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 234 AM MST Thu Dec 18 2025 ...ATMOSPHERIC RIVER TO BRING SIGNIFICANT MOUNTAIN SNOW... .A plume of subtropical moisture associated with an atmospheric river will bring significant mountain snow Thursday into Friday. Snow levels will rise above 5,000 feet Thursday night before quickly dropping Friday morning as strong cold front passes. The heaviest snow accumulations will impact higher elevations above 6,000 feet, especially across the Clearwater and Bitterroot Mountains. MTZ006-190945- /O.CON.KMSO.WS.W.0014.251219T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 234 AM MST Thu Dec 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST FRIDAY... * WHAT...Heavy snow expected. There is a likelihood of major winter weather impacts to isolated extreme winter storm impacts. Total snow accumulations between 8 to 14 inches for Lolo Pass and 16 to 24 inches for Lost Trail Pass. Winds gusting between 35 and 45 mph. * WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass. * WHEN...From 5 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MAJOR winter weather impacts, expect considerable disruptions to normal activities. Dangerous or impossible traveling conditions. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. Gusty winds could bring down tree branches, leading to power outages. * ADDITIONAL DETAILS...Snow will briefly change over to rain at Lolo Pass Thursday night, before switching back to snow early Friday morning. For Lost Trail Pass, snowfall rates will exceed one inch per hour for several hours Thursday night into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ009-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Western Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 10 and 20 inches. Winds gusting as high as 55 mph. * WHERE...Williams Creek Summit. * WHEN...From 1 PM this afternoon to 5 PM 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. && $$ IDZ010-190945- /O.EXB.KMSO.WW.Y.0049.251218T2000Z-251220T0000Z/ Eastern Lemhi County- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST FRIDAY ABOVE 6500 FEET... * WHAT...Snow expected above 6500 feet. There is a likelihood of moderate winter weather impacts. Total snow accumulations between 4 and 7 inches across Gilmore Summit with 12 to 24 inches over mountain areas including Lost Trail Pass. Winds gusting as high as 45 mph. * WHERE...Lemhi Pass, Highway 93 Lost Trail Pass to Gibbonsville, Highway 28 Tendoy to Lone Pine, and Bannock Pass. * WHEN...From 1 PM this afternoon to 5 PM MST Friday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Closures and disruptions to infrastructure may occur. The hazardous conditions could impact the Thursday evening and Friday morning commutes, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ IDZ006-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Southern Clearwater Mountains- 134 AM PST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 10 AM PST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations of 8 to 14 inches in the higher elevations, including Lolo Pass. Total accumulations of 3 to 7 inches across lower elevations. Winds gusting as high as 40 mph. * WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From noon today to 10 AM PST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front 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. && $$ MTZ002-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ West Glacier Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate to isolated major winter weather impacts. Total snow accumulations between 6 and 12 inches from Essex to Marias Pass. Total snow accumulations of 2 and 4 inches for lower elevations, including West Glacier. Winds gusting as high as 45 mph. * WHERE...Marias Pass, Essex, Polebridge, Glacier National Park, Bad Rock Canyon, and Highway 83 Bigfork to Swan Lake. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Snow levels will briefly rise above 4,500 feet Thursday night before dropping below 3,000 feet Friday morning as a cold front passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ MTZ004-190945- /O.CON.KMSO.WW.Y.0049.251218T2000Z-251220T1800Z/ Lower Clark Fork Region- 234 AM MST Thu Dec 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 11 AM MST SATURDAY... * WHAT...Snow expected. There is a likelihood of moderate winter weather impacts. Total snow accumulations of 6 to 12 inches at Lookout Pass. Winds gusting as high as 35 mph. * WHERE...I-90 Lookout Pass to Haugan. * WHEN...From 1 PM this afternoon to 11 AM MST Saturday. * IMPACTS...For MODERATE winter weather impacts, expect disruptions to normal activities. Hazardous traveling conditions. Use extra caution while driving. * ADDITIONAL DETAILS...Snow levels will briefly rise above 5,000 feet Thursday night with snow changing to rain at Lookout Pass. Snow levels will drop below 3,000 feet Friday morning as a cold front passes with snow resuming. 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. && $$ AL Action: Continued Issued At: 2025-12-19 11:20:18 858 WWUS45 KMSO 191719 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER HEADLINE UPDATES... .The cold front is moving south with significantly decreased precipitation behind it. Colder air and periods of snow showers will continue across the region through much of Saturday. MTZ004-191830- /O.CAN.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Lower Clark Fork Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of prolonged or heavy snow has ended. Periods of snow showers will continue through Saturday especially at pass level. Some showers may be briefly intense mid-day Saturday. With colder air moving in and breezy winds, remain alert for changing conditions. Expect 4 to 6 inches of additional snow accumulation at pass level, with lower amounts beneath, through Saturday evening. $$ MTZ006-200000- /O.CON.KMSO.WS.W.0014.000000T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1019 AM MST Fri Dec 19 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow will continue through at least the rest of the day. There is a likelihood of developing or ongoing moderate to major winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 8 inches. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Winter traveling conditions. 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... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Southern Clearwater Mountains- 919 AM PST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 6 inches. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, and Elk City. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Western Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 6 inches. Winds gusting as high as 50 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County. * WHERE...Williams Creek Summit. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ010-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Eastern Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 4 inches. Winds gusting as high as 45 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County including the city of Salmon, US-93, and ID-28. * WHERE...Lemhi Pass, Bannock Pass, Highway 93 Lost Trail Pass to Gibbonsville, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ MTZ002-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ West Glacier Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snowfall rates will pick back up late this evening into the overnight period. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Essex, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Bad Rock Canyon. * WHEN...Until 11 AM MST Saturday. * 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 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. && $$ Action: Cancelled Issued At: 2025-12-19 11:20:18 858 WWUS45 KMSO 191719 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER HEADLINE UPDATES... .The cold front is moving south with significantly decreased precipitation behind it. Colder air and periods of snow showers will continue across the region through much of Saturday. MTZ004-191830- /O.CAN.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Lower Clark Fork Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of prolonged or heavy snow has ended. Periods of snow showers will continue through Saturday especially at pass level. Some showers may be briefly intense mid-day Saturday. With colder air moving in and breezy winds, remain alert for changing conditions. Expect 4 to 6 inches of additional snow accumulation at pass level, with lower amounts beneath, through Saturday evening. $$ MTZ006-200000- /O.CON.KMSO.WS.W.0014.000000T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1019 AM MST Fri Dec 19 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow will continue through at least the rest of the day. There is a likelihood of developing or ongoing moderate to major winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 8 inches. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Winter traveling conditions. 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... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Southern Clearwater Mountains- 919 AM PST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 6 inches. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, and Elk City. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Western Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 6 inches. Winds gusting as high as 50 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County. * WHERE...Williams Creek Summit. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ010-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Eastern Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 4 inches. Winds gusting as high as 45 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County including the city of Salmon, US-93, and ID-28. * WHERE...Lemhi Pass, Bannock Pass, Highway 93 Lost Trail Pass to Gibbonsville, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ MTZ002-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ West Glacier Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snowfall rates will pick back up late this evening into the overnight period. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Essex, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Bad Rock Canyon. * WHEN...Until 11 AM MST Saturday. * 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 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. && $$ Action: Continued Issued At: 2025-12-19 11:20:18 858 WWUS45 KMSO 191719 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER HEADLINE UPDATES... .The cold front is moving south with significantly decreased precipitation behind it. Colder air and periods of snow showers will continue across the region through much of Saturday. MTZ004-191830- /O.CAN.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Lower Clark Fork Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of prolonged or heavy snow has ended. Periods of snow showers will continue through Saturday especially at pass level. Some showers may be briefly intense mid-day Saturday. With colder air moving in and breezy winds, remain alert for changing conditions. Expect 4 to 6 inches of additional snow accumulation at pass level, with lower amounts beneath, through Saturday evening. $$ MTZ006-200000- /O.CON.KMSO.WS.W.0014.000000T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1019 AM MST Fri Dec 19 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow will continue through at least the rest of the day. There is a likelihood of developing or ongoing moderate to major winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 8 inches. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Winter traveling conditions. 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... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Southern Clearwater Mountains- 919 AM PST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 6 inches. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, and Elk City. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Western Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 6 inches. Winds gusting as high as 50 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County. * WHERE...Williams Creek Summit. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ010-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Eastern Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 4 inches. Winds gusting as high as 45 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County including the city of Salmon, US-93, and ID-28. * WHERE...Lemhi Pass, Bannock Pass, Highway 93 Lost Trail Pass to Gibbonsville, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ MTZ002-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ West Glacier Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snowfall rates will pick back up late this evening into the overnight period. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Essex, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Bad Rock Canyon. * WHEN...Until 11 AM MST Saturday. * 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 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. && $$ Action: Continued Issued At: 2025-12-19 11:20:18 858 WWUS45 KMSO 191719 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER HEADLINE UPDATES... .The cold front is moving south with significantly decreased precipitation behind it. Colder air and periods of snow showers will continue across the region through much of Saturday. MTZ004-191830- /O.CAN.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Lower Clark Fork Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of prolonged or heavy snow has ended. Periods of snow showers will continue through Saturday especially at pass level. Some showers may be briefly intense mid-day Saturday. With colder air moving in and breezy winds, remain alert for changing conditions. Expect 4 to 6 inches of additional snow accumulation at pass level, with lower amounts beneath, through Saturday evening. $$ MTZ006-200000- /O.CON.KMSO.WS.W.0014.000000T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1019 AM MST Fri Dec 19 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow will continue through at least the rest of the day. There is a likelihood of developing or ongoing moderate to major winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 8 inches. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Winter traveling conditions. 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... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Southern Clearwater Mountains- 919 AM PST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 6 inches. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, and Elk City. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Western Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 6 inches. Winds gusting as high as 50 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County. * WHERE...Williams Creek Summit. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ010-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Eastern Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 4 inches. Winds gusting as high as 45 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County including the city of Salmon, US-93, and ID-28. * WHERE...Lemhi Pass, Bannock Pass, Highway 93 Lost Trail Pass to Gibbonsville, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ MTZ002-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ West Glacier Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snowfall rates will pick back up late this evening into the overnight period. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Essex, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Bad Rock Canyon. * WHEN...Until 11 AM MST Saturday. * 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 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. && $$ Action: Continued Issued At: 2025-12-19 11:20:18 858 WWUS45 KMSO 191719 WSWMSO URGENT - WINTER WEATHER MESSAGE National Weather Service Missoula MT 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER HEADLINE UPDATES... .The cold front is moving south with significantly decreased precipitation behind it. Colder air and periods of snow showers will continue across the region through much of Saturday. MTZ004-191830- /O.CAN.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Lower Clark Fork Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY IS CANCELLED... The threat of prolonged or heavy snow has ended. Periods of snow showers will continue through Saturday especially at pass level. Some showers may be briefly intense mid-day Saturday. With colder air moving in and breezy winds, remain alert for changing conditions. Expect 4 to 6 inches of additional snow accumulation at pass level, with lower amounts beneath, through Saturday evening. $$ MTZ006-200000- /O.CON.KMSO.WS.W.0014.000000T0000Z-251220T0000Z/ Bitterroot/Sapphire Mountains- 1019 AM MST Fri Dec 19 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Moderate to heavy snow will continue through at least the rest of the day. There is a likelihood of developing or ongoing moderate to major winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 8 inches. * WHERE...Highway 93 Sula to Lost Trail Pass and Lolo Pass. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Winter traveling conditions. 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... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. && $$ IDZ006-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ Southern Clearwater Mountains- 919 AM PST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts due to snow and wind gusts up to 40 mph creating reduced visibility. Additional snow accumulations up to 6 inches. * WHERE...Highway 12 Lowell to Lolo Pass, Dixie, and Elk City. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ IDZ009-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Western Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 6 inches. Winds gusting as high as 50 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County. * WHERE...Williams Creek Summit. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. 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. && $$ IDZ010-200000- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T0000Z/ Eastern Lemhi County- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON ABOVE 6500 FEET... * WHAT...Snow above 6500 feet. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Additional snow accumulations up to 4 inches. Winds gusting as high as 45 mph. Minor accumulations and strong winds will also impact the lower elevations of Lemhi County including the city of Salmon, US-93, and ID-28. * WHERE...Lemhi Pass, Bannock Pass, Highway 93 Lost Trail Pass to Gibbonsville, and Highway 28 Tendoy to Lone Pine. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Winter traveling conditions. For MINOR winter weather impacts, expect a few inconveniences to normal activities. Use caution while driving. The hazardous conditions could impact the Friday evening commute, especially over higher passes. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Outdoor recreationalists should be prepared for winter conditions. Snowfall could impact roads and cold temperatures may result in hypothermia. && $$ MTZ002-201730- /O.CON.KMSO.WW.Y.0049.000000T0000Z-251220T1800Z/ West Glacier Region- 1019 AM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST SATURDAY... * WHAT...Snow. There is a likelihood of developing or ongoing minor to moderate winter weather impacts. Snowfall rates will pick back up late this evening into the overnight period. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Essex, Glacier National Park, Marias Pass, Highway 83 Bigfork to Swan Lake, Polebridge, and Bad Rock Canyon. * WHEN...Until 11 AM MST Saturday. * 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 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. && $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||