Winter Weather Warnings / Watches / Advisories
Issued by NWS Missoula, MT

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542
WWUS45 KMSO 051808
WSWMSO

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1108 AM MST Fri Dec 5 2025

IDZ009-010-051915-
/O.EXP.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/
Western Lemhi County-Eastern Lemhi County-
1108 AM MST Fri Dec 5 2025

...WINTER WEATHER ADVISORY HAS EXPIRED...

Conditions have improved.

$$

IDZ005-006-061815-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
1008 AM PST Fri Dec 5 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY...

* WHAT...Heavy snow expected. There is a likelihood of major winter
  storm impacts. Total snow accumulations 2 to 6 inches in the
  valleys and 9 to 18 inches in the higher terrain including Lolo
  Pass.

* WHERE...Pierce, Highway 11 Pierce to Headquarters, Elk City, Elk
  River, Highway 12 Lowell to Lolo Pass, and Dixie.

* WHEN...Until 4 PM PST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Friday evening commute,
  especially over higher passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

MTZ004-061815-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Lower Clark Fork Region-
1108 AM MST Fri Dec 5 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...

* WHAT...Heavy snow expected. There is a likelihood of major winter
  weather impacts. Total snow accumulations of 1 to 4 inches in the
  valleys and 8 to 14 inches in the higher terrain including Lookout
  Pass and Evaro Hill.

* WHERE...Evaro Hill, I-90 Lookout Pass to Haugan, Highway 200
  Thompson Falls to Plains, and Highway 200 Trout Creek to Heron.

* WHEN...Until 5 PM MST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous conditions
  could impact the Friday evening commute, especially over higher
  passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

MTZ006-061815-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Bitterroot/Sapphire Mountains-
1108 AM MST Fri Dec 5 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...

* WHAT...Heavy snow expected. There is a likelihood of major winter
  storm impacts. Total snow accumulations 1 to 5 inches in the
  valleys and 8 to 15 inches in the higher terrain including Lolo
  and Lost Trail Passes. Winds gusting as high as 40 mph on Friday.

* WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass.

* WHEN...Until 5 PM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Friday evening commute,
  especially over higher passes. Gusty winds could bring down tree
  branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

MTZ043-061815-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Potomac/Seeley Lake Region-
1108 AM MST Fri Dec 5 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...

* WHAT...Heavy Snow expected. There is a likelihood of major winter
  weather impacts. Total snow accumulations between 5 to 10 inches.

* WHERE...I-90 East Missoula to Bearmouth, Highway 83 Seeley Lake to
  Condon, and Highway 200 Bonner to Greenough.

* WHEN...Until 5 PM MST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous conditions
  could impact the Friday evening commute, especially over higher
  passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

MTZ002-061815-
/O.UPG.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/
/O.EXB.KMSO.WW.Y.0046.251206T0000Z-251207T0000Z/
West Glacier Region-
1108 AM MST Fri Dec 5 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5
PM MST SATURDAY...

* WHAT...Snow expected. There is a likelihood of moderate to
  isolated major winter weather impacts. Total snow accumulations 1
  to 3 inches in the valleys and 5 to 8 inches in the higher terrain
  including Marias Pass.

* WHERE...Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge,
  Essex, Glacier National Park, and Bad Rock Canyon.

* WHEN...From 5 PM this afternoon to 5 PM MST Saturday.

* IMPACTS...Travel could be very difficult. The hazardous conditions
  could impact the Friday evening commute, especially over higher
  passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

MTZ005-060600-
/O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/
Missoula/Bitterroot Valleys-
1108 AM MST Fri Dec 5 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow. A lull in precipitation is expected through 2 pm.
  Then moderate to heavy snow showers are expected. Snow rates of
  0.50 to 1 inch per hour possible along with wind gusts up to 40
  mph.

* WHERE...Bitterroot Valley and Missoula.

* WHEN...Until 11 PM MST this evening.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
  to normal activities. Hazardous traveling conditions. Use extra
  caution while driving. Closures and disruptions to infrastructure
  may occur. The hazardous conditions could impact the Friday
  evening commute, especially over higher passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

MTZ007-060600-
/O.CON.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/
Butte/Blackfoot Region-
1108 AM MST Fri Dec 5 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

* WHAT...Snow expected. There is a likelihood of moderate winter
  weather impacts. Total snow accumulations up to 6 inches.

* WHERE...Highway 12 Garrison to Elliston, Georgetown Lake, Butte,
  MacDonald Pass, and Homestake Pass.

* WHEN...Until 11 PM MST this evening.

* IMPACTS...For MODERATE winter weather impacts, expect disruptions
  to normal activities. Hazardous traveling conditions. Use extra
  caution while driving. Closures and disruptions to infrastructure
  may occur. The hazardous conditions could impact the Friday
  evening commute, especially over higher passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$