Montana Department of Transportation

Malcolm “Mack” Long, Director

COVID-19

View the Governor’s Coronavirus Task Force site for more information.

Main Content

Accidents and Incidents Report

Winter Storm Warning/Watch/Advisory

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Note:  Be sure to pay close attention to the date and time of each warning.    
This document contains all warnings in the state so please read the
complete document.
 
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WWUS45 KMSO 251116

WSWMSO



URGENT - WINTER WEATHER MESSAGE

National Weather Service Missoula MT

416 AM MST Thu Feb 25 2021



IDZ005-261200-

/O.UPG.KMSO.WS.A.0005.210225T1500Z-210227T0000Z/

/O.NEW.KMSO.WS.W.0009.210225T1600Z-210227T0000Z/

Northern Clearwater Mountains-

316 AM PST Thu Feb 25 2021



...WINTER STORM WARNING IN EFFECT FROM 8 AM THIS MORNING TO 4 PM

PST FRIDAY...



* WHAT...Heavy snow and blowing snow expected. Total snow

  accumulations of 12 to 20 inches, with up to three feet of snow

  above 6,000 feet. Winds gusts up to 40 mph will cause areas of

  blowing and drifting snow, particularly Thursday night into 

  Friday morning. 



* WHERE...Elk River, Highway 11 Pierce to Headquarters, and 

  Pierce.



* WHEN...From 8 AM this morning to 4 PM PST Friday.



* IMPACTS...Travel could be very difficult to impossible. Areas of 

  blowing snow could significantly reduce visibility.



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.



&&



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IDZ006-261200-

/O.UPG.KMSO.WS.A.0005.210225T1500Z-210227T0000Z/

/O.NEW.KMSO.WS.W.0009.210225T1600Z-210227T0000Z/

Southern Clearwater Mountains-

316 AM PST Thu Feb 25 2021



...WINTER STORM WARNING IN EFFECT FROM 8 AM THIS MORNING TO 4 PM

PST FRIDAY...



* WHAT...Heavy snow and blowing snow expected. Total snow

  accumulations of 12 to 20 inches, with up to three feet of snow

  above 6,000 feet. Winds gusts up to 40 mph will cause areas of

  blowing and drifting snow, particularly Thursday night into 

  Friday morning. 



* WHERE...Dixie, Elk City, and Highway 12 Lowell to Lolo Pass.



* WHEN...From 8 AM this morning to 4 PM PST Friday.



* IMPACTS...Travel could be very difficult to impossible. Areas of

  blowing snow could significantly reduce visibility. Backcountry

  users are highly encouraged to reference ITD avalanche sources 

  for up to the minute information on changing conditions.



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.



&&



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IDZ007-261200-

/O.EXT.KMSO.WW.Y.0025.210225T1600Z-210227T0000Z/

Orofino/Grangeville Region-

316 AM PST Thu Feb 25 2021



...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING

TO 4 PM PST FRIDAY...



* WHAT...Snow expected. Total snowfall accumulations of 2 to 5

  inches below 2,500 feet, including Orofino and Kooskia. Total

  snowfall accumulations of 6 to 10 inches, including bench areas

  of above Orofino, Grangeville, Woodland, and Weippe.



* WHERE...Camas Prairie, Grangeville and vicinity, and Greer 

  Grade.



* WHEN...From 8 AM this morning to 4 PM PST Friday.



* IMPACTS...Travel could be affected. Gusty south winds up to 50

  mph will cause areas of blowing and drifting snow in the 

  vicinity of Grangeville from 9 am to 2 pm PST Thursday. 





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.



&&



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IDZ008-261200-

/O.EXT.KMSO.WW.Y.0025.210225T1600Z-210227T0000Z/

Lower Hells Canyon/Salmon River Region-

316 AM PST Thu Feb 25 2021



...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING

TO 4 PM PST FRIDAY...



* WHAT...Snow expected. Total snow accumulations of 4 to 8 inches

  for Whitebird Hill and elevations above 3,000 feet. Total snow

  accumulations of 2 to 4 inches below 3,000 feet.



* WHERE...Lower Hells Canyon/Salmon River Region.



* WHEN...From 8 AM this morning to 4 PM PST Friday.



* IMPACTS...Travel could be affected.



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.



&&



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MTZ001-261200-

/O.CON.KMSO.WW.Y.0025.210225T1500Z-210226T1500Z/

Kootenai/Cabinet Region-

416 AM MST Thu Feb 25 2021



...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS

MORNING TO 8 AM MST FRIDAY...



* WHAT...Snow expected. Total snow accumulations of 2 to 4 inches.

  Localized snow bands will produce snowfall rates up to one inch

  per hour Thursday night into Friday morning.



* WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to 

  Libby, Highway 56 Bull Lake Road, and Highway 93 Eureka to 

  Whitefish.



* WHEN...From 8 AM Thursday to 8 AM MST Friday.



* IMPACTS...Travel could be affected.



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.



&&



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MTZ004-261200-

/O.CON.KMSO.WW.Y.0025.210225T1500Z-210227T0000Z/

Lower Clark Fork Region-

416 AM MST Thu Feb 25 2021



...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS

MORNING TO 5 PM MST FRIDAY...



* WHAT...Snow expected. Total snow accumulations of 10 to 16

  inches from Saltese to Lookout Pass on I-90. Total snow

  accumulations of 3 to 6 inches at lower elevations. Localized 

  snow bands will produce snowfall rates up to one inch per hour 

  Thursday night into Friday morning.



* WHERE...Evaro Hill, Highway 200 Thompson Falls to Plains, 

  Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to 

  Haugan.



* WHEN...From 8 AM Thursday to 5 PM MST Friday.



* IMPACTS...Travel could be affected.



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.



&&



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MTZ002-261200-

/O.CON.KMSO.WW.Y.0025.210225T1500Z-210226T1500Z/

West Glacier Region-

416 AM MST Thu Feb 25 2021



...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM THIS

MORNING TO 8 AM MST FRIDAY...



* WHAT...Snow expected. Total snow accumulations of 3 to 7 inches,

  with locally higher amounts east of Essex to Marias Pass. Winds

  gusting as high as 40 mph.



* WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan 

  Lake, Marias Pass, and Polebridge.



* WHEN...From 8 AM Thursday to 8 AM MST Friday.



* IMPACTS...Travel could be affected. Areas of blowing and

  drifting snow are possible between Essex and Marias Pass. 



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.



&&



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WWUS45 KTFX 250923

WSWTFX



URGENT - WINTER WEATHER MESSAGE

National Weather Service Great Falls MT

223 AM MST Thu Feb 25 2021



MTZ008-015-055-252300-

/O.EXB.KTFX.WW.Y.0020.210225T2100Z-210227T0400Z/

Beaverhead-Madison-Gallatin-

Including Raynolds Pass, City of Bozeman, West Yellowstone, 

Bozeman Pass, and Targhee Pass

223 AM MST Thu Feb 25 2021



...WINTER WEATHER ADVISORY IN EFFECT

FROM 2 PM THIS AFTERNOON TO 9 PM MST FRIDAY...



* WHAT...Snow expected. Total snow accumulations of 3 to 6 inches.

  Winds gusting as high as 30 mph.



* WHERE...The southern portions of Beaverhead, Madison and

  Gallatin counties, including areas around Big Sky, West

  Yellowstone and Raynolds Pass.



* WHEN...From 2 PM this afternoon to 9 PM MST Friday.



* IMPACTS...Plan on slippery road conditions. Areas of blowing 

  snow could significantly reduce visibility.



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.



&&



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MTZ009-252300-

/O.CON.KTFX.WW.Y.0020.210225T1200Z-210226T1200Z/

Northern Rocky Mountain Front-

Including Logan Pass, Browning, and Heart Butte

223 AM MST Thu Feb 25 2021



...WINTER WEATHER ADVISORY REMAINS IN EFFECT

UNTIL 5 AM MST FRIDAY...



* WHAT...Snow and blowing snow expected. Total snow accumulations

  of 1 to 3 inches at lower elevations, and 5 to 10 inches in the

  mountains. Winds gusting as high as 75 mph.



* WHERE...Northern Rocky Mountain Front.



* WHEN...Until 5 AM MST Friday.



* IMPACTS...Travel could be very difficult. Widespread blowing

  snow could significantly reduce visibility.



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.



&&



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http://www.weather.gov/greatfalls



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