352
WWUS45 KMSO 261833
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1133 AM MST WED NOV 26 2025
IDZ006-MTZ001-004>006-271845-
/O.NEW.KMSO.WW.Y.0044.251128T0600Z-251129T0000Z/
SOUTHERN CLEARWATER MOUNTAINS-KOOTENAI/CABINET REGION-LOWER CLARK
FORK REGION-MISSOULA/BITTERROOT VALLEYS-BITTERROOT/SAPPHIRE
MOUNTAINS-
1133 AM MST WED NOV 26 2025 /1033 AM PST WED NOV 26 2025/
...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM MST /10 PM PST/
THURSDAY TO 5 PM MST /4 PM PST/ FRIDAY...
* WHAT...STRONG WINDS AND SNOW EXPECTED. THERE IS A LIKELIHOOD OF
MINOR TO MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS
UP TO 3 INCHES. RAPID DROP IN TEMPERATURES COULD QUICKLY FREEZE
ROAD SURFACES.
* WHERE...IN IDAHO, SOUTHERN CLEARWATER MOUNTAINS. IN MONTANA,
KOOTENAI/CABINET REGION, BITTERROOT/SAPPHIRE MOUNTAINS, LOWER
CLARK FORK REGION, AND MISSOULA/BITTERROOT VALLEYS.
* WHEN...FROM 11 PM MST /10 PM PST/ THURSDAY TO 5 PM MST /4 PM PST/
FRIDAY.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. 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 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.
MTZ003-007-043-271845-
/O.EXB.KMSO.WS.A.0009.251128T0600Z-251128T2100Z/
FLATHEAD/MISSION VALLEYS-BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY
LAKE REGION-
1133 AM MST WED NOV 26 2025
...WINTER STORM WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY
AFTERNOON...
* WHAT...STRONG WINDS AND HEAVY SNOW POSSIBLE. THERE IS A CHANCE OF
MODERATE TO MAJOR WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS
BETWEEN 1 AND 6 INCHES POSSIBLE. WINDS COULD GUST AS HIGH AS 40
MPH. RAPID DROP IN TEMPERATURES COULD QUICKLY FREEZE ROAD SURFACES.
* WHERE...MACDONALD PASS, HIGHWAY 83 SEELEY LAKE TO CONDON, BUTTE,
HIGHWAY 12 GARRISON TO ELLISTON, HOMESTAKE PASS, HIGHWAY 200
BONNER TO GREENOUGH, I-90 EAST MISSOULA TO BEARMOUTH, FLATHEAD
VALLEY, MISSION VALLEY, POLSON, GEORGETOWN LAKE, AND FLATHEAD LAKE.
* WHEN...FROM THURSDAY EVENING THROUGH FRIDAY AFTERNOON.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. VISIBILITIES MAY DROP BELOW 1/4
MILE DUE TO FALLING AND BLOWING SNOW. 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. FOR MAJOR WINTER
WEATHER IMPACTS, EXPECT CONSIDERABLE DISRUPTIONS TO NORMAL
ACTIVITIES. DANGEROUS OR IMPOSSIBLE TRAVELING CONDITIONS. AVOID
TRAVEL IN THE IMPACTED AREAS IF POSSIBLE. WIDESPREAD CLOSURES AND
DISRUPTIONS TO INFRASTRUCTURE MAY OCCUR. THE HAZARDOUS CONDITIONS
COULD IMPACT THE FRIDAY MORNING COMMUTE, ESPECIALLY OVER HIGHER
PASSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
MTZ002-271845-
/O.CON.KMSO.WS.A.0009.251128T0000Z-251128T2100Z/
WEST GLACIER REGION-
1133 AM MST WED NOV 26 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY AFTERNOON...
* WHAT...STRONG WINDS AND HEAVY SNOW POSSIBLE. THERE IS A CHANCE OF
MODERATE TO MAJOR WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS
BETWEEN 3 AND 11 INCHES POSSIBLE. WINDS COULD GUST AS HIGH AS 40
MPH. RAPID DROP IN TEMPERATURES COULD QUICKLY FREEZE ROAD SURFACES.
* WHERE...HIGHWAY 83 BIGFORK TO SWAN LAKE, ESSEX, BAD ROCK CANYON,
MARIAS PASS, GLACIER NATIONAL PARK, AND POLEBRIDGE.
* WHEN...FROM THURSDAY AFTERNOON THROUGH FRIDAY AFTERNOON.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. VISIBILITIES MAY DROP BELOW 1/4
MILE DUE TO FALLING AND BLOWING SNOW. 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. FOR MAJOR WINTER
WEATHER IMPACTS, EXPECT CONSIDERABLE DISRUPTIONS TO NORMAL
ACTIVITIES. DANGEROUS OR IMPOSSIBLE TRAVELING CONDITIONS. AVOID
TRAVEL IN THE IMPACTED AREAS IF POSSIBLE. WIDESPREAD CLOSURES AND
DISRUPTIONS TO INFRASTRUCTURE MAY OCCUR. THE HAZARDOUS CONDITIONS
COULD IMPACT THE THURSDAY EVENING AND FRIDAY MORNING COMMUTES,
ESPECIALLY OVER HIGHER PASSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
PERSONS SHOULD CONSIDER DELAYING ALL TRAVEL. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION. CONSIDER TAKING A WINTER
STORM KIT ALONG WITH YOU, INCLUDING SUCH ITEMS AS TIRE CHAINS,
BOOSTER CABLES, FLASHLIGHT, SHOVEL, BLANKETS AND EXTRA CLOTHING.
ALSO TAKE WATER, A FIRST AID KIT, AND ANYTHING ELSE THAT WOULD HELP
YOU SURVIVE IN CASE YOU BECOME STRANDED.
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