477
WWUS45 KMSO 011827
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1227 PM MDT WED APR 1 2026
IDZ006-MTZ006-031200-
/O.CON.KMSO.WW.Y.0018.260402T0600Z-260403T1200Z/
SOUTHERN CLEARWATER MOUNTAINS-BITTERROOT/SAPPHIRE MOUNTAINS-
1227 PM MDT WED APR 1 2026 /1127 AM PDT WED APR 1 2026/
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT MDT /11
PM PDT/ TONIGHT TO 6 AM MDT /5 AM PDT/ FRIDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WEATHER
IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 5 AND 10 INCHES ABOVE
4000 FEET. 1 TO 4 INCHES POSSIBLE DOWN TO 3000 FEET.
* WHERE...ELK CITY, DIXIE, LOLO PASS, HIGHWAY 93 SULA TO LOST TRAIL
PASS, AND HIGHWAY 12 LOWELL TO LOLO PASS.
* WHEN...FROM MIDNIGHT MDT /11 PM PDT/ TONIGHT TO 6 AM MDT /5 AM
PDT/ 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.
* ADDITIONAL DETAILS...HEAVY, WET SNOW MAY CAUSE LOCALIZED POWER
OUTAGES AND TREE DAMAGE.
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.
MTZ002-031200-
/O.CON.KMSO.WW.Y.0018.260402T1200Z-260403T1800Z/
WEST GLACIER REGION-
1227 PM MDT WED APR 1 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THURSDAY TO
NOON MDT FRIDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 2 TO 6 INCHES IN THE
VALLEYS. 5 TO 10 INCHES BETWEEN ESSEX AND MARIAS PASS ON HIGHWAY
2.
* WHERE...HIGHWAY 83 BIGFORK TO SWAN LAKE, POLEBRIDGE, ESSEX,
GLACIER NATIONAL PARK, MARIAS PASS, AND BAD ROCK CANYON.
* WHEN...FROM 6 AM THURSDAY TO NOON MDT 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.
* ADDITIONAL DETAILS...LOCALIZED HEAVIER SNOWFALL AMOUNTS ARE
ANTICIPATED ALONG HIGHWAY 83 BETWEEN FERNDALE AND SWAN LAKE.
HEAVY, WET SNOW MAY CAUSE LOCALIZED POWER OUTAGES AND TREE DAMAGE.
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.
MTZ007-031200-
/O.CON.KMSO.WW.Y.0018.260402T1200Z-260403T1200Z/
BUTTE/BLACKFOOT REGION-
1227 PM MDT WED APR 1 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THURSDAY TO 6
AM MDT FRIDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 4 AND 7 INCHES
FOR BUTTE, GEORGETOWN LAKE, HOMESTAKE PASS AND MACDONALD PASS. 1
TO 3 INCHES FOR THE LOWER VALLEYS. WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...HIGHWAY 12 GARRISON TO ELLISTON, BUTTE, MACDONALD PASS,
HOMESTAKE PASS, AND GEORGETOWN LAKE.
* WHEN...FROM 6 AM THURSDAY TO 6 AM MDT 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
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...HEAVY SNOW SHOWERS MAY OCCUR MID MORNING ON
THURSDAY, CAUSING LOW VISIBILITY AND QUICKLY CHANGING ROAD
CONDITIONS.
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.
MTZ043-031200-
/O.CON.KMSO.WW.Y.0018.260402T1200Z-260403T1800Z/
POTOMAC/SEELEY LAKE REGION-
1227 PM MDT WED APR 1 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM THURSDAY TO
NOON MDT FRIDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 4
INCHES FOR VALLEYS.
* WHERE...HIGHWAY 200 BONNER TO GREENOUGH, I-90 EAST MISSOULA TO
BEARMOUTH, AND HIGHWAY 83 SEELEY LAKE TO CONDON.
* WHEN...FROM 6 AM THURSDAY TO NOON MDT 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
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...HEAVY, WET SNOW MAY CAUSE LOCALIZED POWER
OUTAGES AND TREE DAMAGE.
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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