Montana Department of Transportation

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 172137

WSWMSO



URGENT - WINTER WEATHER MESSAGE

National Weather Service Missoula MT

237 PM MST Mon Dec 17 2018



MTZ002-182145-

/O.UPG.KMSO.WS.A.0008.181218T1200Z-181219T1500Z/

/O.NEW.KMSO.WW.Y.0070.181218T1200Z-181219T1500Z/

West Glacier Region-

237 PM MST Mon Dec 17 2018



...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 8 AM

MST WEDNESDAY...



* WHAT...Mixed precipitation expected. Total snow accumulations of

  8 to 18 inches at high elevations and ice accumulations of a 

  light glaze expected. Winds gusting as high as 50 mph at Marias 

  Pass.



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

  Lake, Marias Pass, and Polebridge.



* WHEN...From 5 AM Tuesday to 8 AM MST Wednesday.



* ADDITIONAL DETAILS...Travel could be very difficult.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Weather Advisory means that periods of snow, sleet or

freezing rain will cause travel difficulties. Expect slippery

roads and limited visibilities, and use caution while driving. 



The latest road conditions for the state you are calling from can

be obtained by calling 5 1 1.



&&



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MTZ004-182145-

/O.UPG.KMSO.WS.A.0008.181218T1200Z-181219T1500Z/

/O.NEW.KMSO.WW.Y.0070.181218T1200Z-181219T1500Z/

Lower Clark Fork Region-

237 PM MST Mon Dec 17 2018



...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 8 AM

MST WEDNESDAY ABOVE 4000 FEET...



* WHAT...Mixed precipitation expected above 4000 feet. Total snow

  accumulations of 5 to 18 inches and ice accumulations of a light

  glaze expected. Winds gusting as high as 45 mph in the mountains.



* WHERE...Lower Clark Fork Region.



* WHEN...From 5 AM Tuesday to 8 AM MST Wednesday.



* ADDITIONAL DETAILS...Travel could be very difficult.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Weather Advisory means that periods of snow, sleet or

freezing rain will cause travel difficulties. Expect slippery

roads and limited visibilities, and use caution while driving. 



The latest road conditions for the state you are calling from can

be obtained by calling 5 1 1.



&&



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IDZ006-MTZ006-182145-

/O.UPG.KMSO.WS.A.0008.181218T1200Z-181219T1500Z/

/O.NEW.KMSO.WW.Y.0070.181218T1200Z-181219T1500Z/

Southern Clearwater Mountains-Bitterroot/Sapphire Mountains-

237 PM MST Mon Dec 17 2018 /137 PM PST Mon Dec 17 2018/



...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM MST /4 AM PST/

TUESDAY TO 8 AM MST /7 AM PST/ WEDNESDAY ABOVE 4000 FEET...



* WHAT...Snow expected above 4000 feet. Total snow accumulations 

  of 5 to 16 inches expected. Winds gusting as high as 45 mph.



* WHERE...Dixie, Elk City, Highway 93 Sula to Lost Trail Pass, 

  and Lolo Pass.



* WHERE..Dixie, travel on Highway 12 over Lolo Pass, and travel 

  on Highway 93 over Lost Trail Pass.



* WHEN...From 5 AM MST /4 AM PST/ Tuesday to 8 AM MST /7 AM PST/ 

  Wednesday.



* ADDITIONAL DETAILS...Travel could be very difficult.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Weather Advisory for snow means periods of snow will

cause primarily travel difficulties. Expect snow covered roads

and limited visibilities, and use caution while driving. 



The latest road conditions for the state you are calling from can

be obtained by calling 5 1 1.



&&



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IDZ005-182145-

/O.NEW.KMSO.WW.Y.0070.181218T1200Z-181219T1500Z/

Northern Clearwater Mountains-

137 PM PST Mon Dec 17 2018



...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 7 AM

PST WEDNESDAY ABOVE 4000 FEET...



* WHAT...Snow expected above 4000 feet. Total snow accumulations 

  of 9 to 21 inches expected. Winds gusting as high as 35 mph.



* WHERE...Northern Clearwater Mountains.



* WHEN...From 4 AM Tuesday to 7 AM PST Wednesday.



* ADDITIONAL DETAILS...Travel could be very difficult to 

  impossible.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Weather Advisory for snow means periods of snow will

cause primarily travel difficulties. Expect snow covered roads

and limited visibilities, and use caution while driving. 



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 181140

WSWTFX



URGENT - WINTER WEATHER MESSAGE

National Weather Service Great Falls MT

440 AM MST Tue Dec 18 2018



MTZ009-048-182300-

/O.CON.KTFX.WW.Y.0123.181218T1200Z-181219T1500Z/

Northern Rocky Mountain Front-Southern Rocky Mountain Front-

Including Logan Pass and Marias Pass

440 AM MST Tue Dec 18 2018



...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST

WEDNESDAY ABOVE 5000 FEET...



* WHAT...Snow and blowing snow expected above 5000 feet. Total

  snow accumulations of 4 to 8 inches at Marias pass with up to 18

  inches expected above pass level. Winds gusting as high as 50

  mph at Marias Pass.



* WHERE...Southern Rocky Mountain Front and Northern Rocky 

  Mountain Front above 5000 feet.



* WHEN...Until 8 AM MST Wednesday.



* ADDITIONAL DETAILS...Travel could be very difficult. 



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Winter Weather Advisory for snow means periods of snow will

cause primarily travel difficulties. Expect snow covered roads

and limited visibilities, and use caution while driving. 



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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