528  
WWUS45 KMSO 261959  
WSWMSO  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MISSOULA MT  
159 PM MDT SUN OCT 26 2025  
 
IDZ005-006-008-009-MTZ006-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
NORTHERN CLEARWATER MOUNTAINS-SOUTHERN CLEARWATER MOUNTAINS-LOWER  
HELLS CANYON/SALMON RIVER REGION-WESTERN LEMHI COUNTY-  
BITTERROOT/SAPPHIRE MOUNTAINS-  
159 PM MDT SUN OCT 26 2025 /1259 PM PDT SUN OCT 26 2025/  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM MDT /5 PM  
PDT/ THIS EVENING TO NOON MDT /11 AM PDT/ MONDAY ABOVE 3500 FEET...  
 
* WHAT...SNOW EXPECTED ABOVE 3500 FEET. THERE IS A LIKELIHOOD OF  
MINOR TO MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS  
UP TO 4 INCHES.  
 
* WHERE...IN IDAHO, LOWER HELLS CANYON/SALMON RIVER REGION, NORTHERN  
CLEARWATER MOUNTAINS, SOUTHERN CLEARWATER MOUNTAINS, AND WESTERN  
LEMHI COUNTY. IN MONTANA, BITTERROOT/SAPPHIRE MOUNTAINS.  
 
* WHEN...FROM 6 PM MDT /5 PM PDT/ THIS EVENING TO NOON MDT /11 AM  
PDT/ MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
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.  
 
 
 
 
 
MTZ001-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
KOOTENAI/CABINET REGION-  
159 PM MDT SUN OCT 26 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING  
TO NOON MDT MONDAY...  
 
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE  
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO 3 INCHES.  
MORE MODERATE IMPACTS AROUND BULL LAKE AND HIGHWAY 2 FROM HAPPYS  
INN TO KILA.  
 
* WHERE...HIGHWAY 37 EUREKA TO LIBBY, HIGHWAY 56 BULL LAKE ROAD,  
HIGHWAY 2 KALISPELL TO LIBBY, AND HIGHWAY 93 EUREKA TO WHITEFISH.  
 
* WHEN...FROM 6 PM THIS EVENING TO NOON MDT MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
* ADDITIONAL DETAILS...FALLING TEMPERATURES WILL LEAD TO RAPIDLY  
FREEZING WET ROADWAYS.  
 
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.  
 
 
 
 
 
MTZ002-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
WEST GLACIER REGION-  
159 PM MDT SUN OCT 26 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING  
TO NOON MDT MONDAY...  
 
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE  
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO 4 INCHES.  
WINDS GUSTING AS HIGH AS 35 MPH.  
 
* WHERE...GLACIER NATIONAL PARK, HIGHWAY 83 BIGFORK TO SWAN LAKE,  
MARIAS PASS, ESSEX, BAD ROCK CANYON, AND POLEBRIDGE.  
 
* WHEN...FROM 6 PM THIS EVENING TO NOON MDT MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
* ADDITIONAL DETAILS...FALLING TEMPERATURES EARLY SUNDAY MORNING  
WILL LEAD TO RAPIDLY FREEZING WET ROADWAYS AT THE HIGHER  
ELEVATIONS.  
 
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.  
 
 
 
 
 
MTZ004-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
LOWER CLARK FORK REGION-  
159 PM MDT SUN OCT 26 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING  
TO NOON MDT MONDAY...  
 
* WHAT...SNOW EXPECTED. THERE IS A CHANCE OF MINOR WINTER WEATHER  
IMPACTS. TOTAL SNOW ACCUMULATIONS 2 TO 5 INCHES ABOVE 4000 FEET.  
 
* WHERE...I-90 LOOKOUT PASS TO HAUGAN, EVARO HILL.  
 
* WHEN...FROM 6 PM THIS EVENING TO NOON MDT MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
* ADDITIONAL DETAILS...FALLING TEMPERATURES EARLY SUNDAY MORNING  
WILL LEAD TO RAPIDLY FREEZING WET ROADWAYS AT THE HIGHER  
ELEVATIONS.  
 
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.  
 
 
 
 
 
MTZ007-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
BUTTE/BLACKFOOT REGION-  
159 PM MDT SUN OCT 26 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING  
TO NOON MDT MONDAY...  
 
* WHAT...SNOW EXPECTED. THERE IS A CHANCE OF MINOR WINTER WEATHER  
IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO ONE INCH. WINDS GUSTING AS  
HIGH AS 35 MPH.  
 
* WHERE...HIGHWAY 12 GARRISON TO ELLISTON, HOMESTAKE PASS,  
GEORGETOWN LAKE, MACDONALD PASS, AND BUTTE.  
 
* WHEN...FROM 6 PM THIS EVENING TO NOON MDT MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
* ADDITIONAL DETAILS...FALLING TEMPERATURES WILL LEAD TO RAPIDLY  
FREEZING WET ROADWAYS AT THE HIGHER ELEVATIONS.  
 
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.  
 
 
 
 
 
MTZ043-271800-  
/O.CON.KMSO.WW.Y.0040.251027T0000Z-251027T1800Z/  
POTOMAC/SEELEY LAKE REGION-  
159 PM MDT SUN OCT 26 2025  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING  
TO NOON MDT MONDAY...  
 
* WHAT...SNOW EXPECTED. THERE IS A CHANCE OF MINOR WINTER WEATHER  
IMPACTS. TOTAL SNOW ACCUMULATIONS UP TO TWO INCHES. HIGHER AMOUNTS  
IN THE MOUNTAINS.  
 
* WHERE...HIGHWAY 83 SEELEY LAKE TO CONDON, I-90 EAST MISSOULA TO  
BEARMOUTH, AND HIGHWAY 200 BONNER TO GREENOUGH.  
 
* WHEN...FROM 6 PM THIS EVENING TO NOON MDT MONDAY.  
 
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL  
LIKELY BECOME SLICK AND HAZARDOUS.  
 
* ADDITIONAL DETAILS...FALLING TEMPERATURES WILL LEAD TO RAPIDLY  
FREEZING WET ROADWAYS AT THE HIGHER ELEVATIONS.  
 
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.  
 
 
 
 
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