145
WWUS45 KMSO 232036
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
136 PM MST MON FEB 23 2026
..WINTRY MIX IN VALLEYS AND HEAVY MOUNTAIN SNOW
.A TRANSITION FROM RAIN TO WET SNOW TONIGHT WILL LEAD TO SLICK ROAD
CONDITIONS FOR THE TUESDAY MORNING COMMUTE ACROSS WEST-CENTRAL
MONTANA. WHILE SNOWFALL AMOUNTS WILL BE LIGHT TO MODERATE, THE
SLUSHY NATURE OF THE SNOW WITH SLICK CONDITIONS ARE THE PRIMARY
CONCERNS AS TEMPERATURES DROP BELOW FREEZING ON WET SURFACES.
MTZ006-241800-
/O.EXB.KMSO.WW.Y.0009.260224T0300Z-260224T1800Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
136 PM MST MON FEB 23 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM
MST TUESDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS 2 TO 7 INCHES,
INCLUDING LOLO AND LOST TRAIL PASSES.
* WHERE...HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS.
* WHEN...FROM 8 PM THIS EVENING TO 11 AM MST TUESDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. 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...THE MAIN CONCERN IS RAIN TRANSITIONING TO
HEAVY WET SNOW, CAUSING SLICK CONDITIONS OVERNIGHT THROUGH TUESDAY
MORNING.
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.
MTZ043-241800-
/O.EXB.KMSO.WW.Y.0009.260224T0400Z-260224T1800Z/
POTOMAC/SEELEY LAKE REGION-
136 PM MST MON FEB 23 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 11 AM
MST TUESDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS 1 TO 4 INCHES IN
THE VALLEYS AND HIGHER AMOUNTS IN THE MOUNTAINS.
* WHERE...I-90 EAST MISSOULA TO BEARMOUTH, HIGHWAY 200 BONNER TO
GREENOUGH, AND HIGHWAY 83 SEELEY LAKE TO CONDON.
* WHEN...FROM 9 PM THIS EVENING TO 11 AM MST TUESDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. 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...THE MAIN CONCERN IS RAIN TRANSITIONING TO
HEAVY WET SNOW, CAUSING SLICK CONDITIONS OVERNIGHT THROUGH TUESDAY
MORNING.
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.
MTZ007-241800-
/O.EXB.KMSO.WW.Y.0009.260224T0600Z-260224T1800Z/
BUTTE/BLACKFOOT REGION-
136 PM MST MON FEB 23 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 11
AM MST TUESDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS 1 TO 5 INCHES.
WINDS GUSTING AS HIGH AS 35 MPH OVER MACDONALD PASS.
* WHERE...GEORGETOWN LAKE, HIGHWAY 12 GARRISON TO ELLISTON, AND
MACDONALD PASS.
* WHEN...FROM 11 PM THIS EVENING TO 11 AM MST TUESDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. 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...THE MAIN CONCERN IS RAIN TRANSITIONING TO
HEAVY WET SNOW, CAUSING SLICK CONDITIONS OVERNIGHT THROUGH TUESDAY
MORNING, MAINLY FOCUSED TO THE BLACKFOOT REGION, GEORGETOWN LAKE,
AND MACDONALD PASS.
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.
MTZ004-241800-
/O.EXT.KMSO.WW.Y.0009.000000T0000Z-260224T1800Z/
LOWER CLARK FORK REGION-
136 PM MST MON FEB 23 2026
..WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 AM MST TUESDAY
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MODERATE WINTER
WEATHER IMPACTS OVER LOOKOUT PASS AND IN THE HIGH TERRAIN. TOTAL
SNOW ACCUMULATIONS 4 TO 8 INCHES FROM TAFT TO LOOKOUT PASS AND
TRACE TO 2 INCHES IN THE VALLEYS.
* WHERE...EVARO HILL, AND I-90 LOOKOUT PASS TO HAUGAN.
* WHEN...UNTIL 11 AM MST TUESDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. 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...FOR EVARO HILL: THE MAIN CONCERN IS RAIN
TRANSITIONING TO HEAVY WET SNOW, CAUSING SLICK CONDITIONS
OVERNIGHT THROUGH TUESDAY MORNING.
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.
MTZ002-241200-
/O.CON.KMSO.WW.Y.0009.000000T0000Z-260224T1200Z/
WEST GLACIER REGION-
136 PM MST MON FEB 23 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
TUESDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 1 TO 4 INCHES
IN THE VALLEYS AND 4 TO 7 INCHES FROM ESSEX TO MARIAS PASS. HIGHER
AMOUNTS ARE EXPECTED IN THE HIGHER TERRAIN. WINDS GUSTING AS HIGH
AS 35 MPH.
* WHERE...MARIAS PASS, ESSEX, HIGHWAY 83 BIGFORK TO SWAN LAKE,
POLEBRIDGE, GLACIER NATIONAL PARK, AND BAD ROCK CANYON.
* WHEN...UNTIL 5 AM MST TUESDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. 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.
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.
JK
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