151
WWUS45 KMSO 141753
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1153 AM MDT TUE APR 14 2026
MTZ002-161500-
/O.NEW.KMSO.WW.Y.0019.260415T0600Z-260416T1500Z/
WEST GLACIER REGION-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MDT THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES FROM
ESSEX TO MARIAS PASS AND 12 TO 20 INCHES ABOVE 6,000 FEET. TOTAL
SNOW ACCUMULATIONS OF 1 TO 5 INCHES IN VALLEY LOCATIONS.
* WHERE...POLEBRIDGE, ESSEX, GLACIER NATIONAL PARK, MARIAS PASS,
HIGHWAY 83 BIGFORK TO SWAN LAKE, AND BAD ROCK CANYON.
* WHEN...FROM MIDNIGHT TONIGHT TO 9 AM MDT THURSDAY.
* 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 WEDNESDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...VALLEY LOCATIONS WILL SEE RAIN CHANGEOVER TO
SNOW WEDNESDAY EVENING INTO THURSDAY MORNING AS THE COLD FRONT
ARRIVES. ROADWAYS WILL BECOME SLUSHY WEDNESDAY AFTERNOON AS
TEMPERATURES WARM NEAR FREEZING AT MARIAS PASS ON HIGHWAY 2.
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.
MTZ004-161500-
/O.NEW.KMSO.WW.Y.0019.260415T0600Z-260416T1500Z/
LOWER CLARK FORK REGION-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
MDT THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 6 TO 12 INCHES FOR
LOOKOUT PASS AND THE HIGHER TERRAIN. TOTAL SNOW ACCUMULATIONS OF
UP TO 2 INCHES IN LOWER ELEVATION VALLEY AREAS.
* WHERE...HIGHWAY 200 THOMPSON FALLS TO PLAINS, HIGHWAY 200 TROUT
CREEK TO HERON, I-90 LOOKOUT PASS TO HAUGAN, AND EVARO HILL.
* WHEN...FROM MIDNIGHT TONIGHT TO 9 AM MDT THURSDAY.
* 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 WEDNESDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...VALLEY LOCATIONS WILL SEE RAIN CHANGEOVER TO
SNOW WEDNESDAY EVENING INTO THURSDAY MORNING AS THE COLD FRONT
ARRIVES. ROADWAYS WILL BECOME SLUSHY WEDNESDAY AFTERNOON AS
TEMPERATURES WARM NEAR FREEZING AT LOOKOUT PASS ON INTERSTATE 90.
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.
MTZ006-161500-
/O.NEW.KMSO.WW.Y.0019.260415T2100Z-260416T1500Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM WEDNESDAY TO 9 AM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 4 AND 8 INCHES
FOR LOLO AND LOST TRAIL PASSES, WITH 7 TO 14 INCHES ABOVE 6,000
FEET IN THE HIGHER TERRAIN.
* WHERE...HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS.
* WHEN...FROM 3 PM WEDNESDAY TO 9 AM MDT THURSDAY.
* 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 WEDNESDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...AN ELEVATED RISK EXISTS FOR SNOW SQUALLS TO
PRODUCE POOR VISIBILITY AND GUSTY WINDS AS THE FRONT ARRIVES LATE
WEDNESDAY AFTERNOON INTO THE EVENING.
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.
IDZ005-006-161500-
/O.NEW.KMSO.WW.Y.0019.260416T0000Z-260416T1500Z/
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-
1053 AM PDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM WEDNESDAY TO 8 AM PDT
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES
BELOW 5,000 FEET, WITH 5 TO 10 INCHES IN THE HIGHER TERRAIN.
* WHERE...HIGHWAY 12 LOWELL TO LOLO PASS, HIGHWAY 11 PIERCE TO
HEADQUARTERS, ELK CITY, ELK RIVER, DIXIE, AND PIERCE.
* WHEN...FROM 5 PM WEDNESDAY TO 8 AM PDT THURSDAY.
* 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 WEDNESDAY
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.
OUTDOOR RECREATIONALISTS SHOULD BE PREPARED FOR WINTER CONDITIONS.
SNOWFALL COULD IMPACT ROADS AND COLD TEMPERATURES MAY RESULT IN
HYPOTHERMIA.
IDZ009-010-161500-
/O.NEW.KMSO.WW.Y.0019.260416T0000Z-260416T1500Z/
WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM WEDNESDAY TO 9 AM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 3 TO 7 INCHES ABOVE
5,000 FEET, INCLUDING AREA MOUNTAIN PASSES. TOTAL SNOW
ACCUMULATIONS OF UP TO 2 INCHES IN LOWER ELEVATION VALLEY AREAS.
* WHERE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE, LEMHI PASS,
WILLIAMS CREEK SUMMIT, SALMON, SHOUP, HIGHWAY 28 TENDOY TO LONE
PINE, AND BANNOCK PASS.
* WHEN...FROM 6 PM WEDNESDAY TO 9 AM MDT THURSDAY.
* 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 WEDNESDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...AN ELEVATED RISK EXISTS FOR SNOW SQUALLS TO
PRODUCE POOR VISIBILITY AND GUSTY WINDS AS THE FRONT ARRIVES
WEDNESDAY EVENING ACROSS MOUNTAIN PASS AREAS.
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.
MTZ007-161500-
/O.NEW.KMSO.WW.Y.0019.260416T0000Z-260416T1500Z/
BUTTE/BLACKFOOT REGION-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM WEDNESDAY TO 9 AM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES, WITH 3
TO 7 INCHES EXPECTED ABOVE 7,000 FEET. WINDS GUSTING AS HIGH AS 35
MPH.
* WHERE...HIGHWAY 12 GARRISON TO ELLISTON, GEORGETOWN LAKE,
MACDONALD PASS, BUTTE, AND HOMESTAKE PASS.
* WHEN...FROM 6 PM WEDNESDAY TO 9 AM MDT THURSDAY.
* 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 WEDNESDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...AN ELEVATED RISK EXISTS FOR SNOW SQUALLS TO
PRODUCE POOR VISIBILITY AND GUSTY WINDS AS THE FRONT ARRIVES
WEDNESDAY EVENING.
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.
MTZ043-161500-
/O.NEW.KMSO.WW.Y.0019.260416T0000Z-260416T1500Z/
POTOMAC/SEELEY LAKE REGION-
1153 AM MDT TUE APR 14 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM WEDNESDAY TO 9 AM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO TWO INCHES,
WITH 6 TO 14 INCHES ABOVE 6,000 FEET IN THE SWAN AND MISSION
MOUNTAINS.
* WHERE...HIGHWAY 200 BONNER TO GREENOUGH, I-90 EAST MISSOULA TO
BEARMOUTH, AND HIGHWAY 83 SEELEY LAKE TO CONDON.
* WHEN...FROM 6 PM WEDNESDAY TO 9 AM MDT THURSDAY.
* 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 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.
AL
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page