731
WWUS45 KMSO 101742
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1142 AM MDT TUE MAR 10 2026
MTZ002-111745-
/O.UPG.KMSO.WS.A.0002.260312T0000Z-260314T1800Z/
/O.NEW.KMSO.WS.W.0002.260312T0000Z-260314T1800Z/
/O.NEW.KMSO.WW.Y.0013.260310T1800Z-260312T0000Z/
WEST GLACIER REGION-
1142 AM MDT TUE MAR 10 2026
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT WEDNESDAY
...WINTER STORM WARNING IN EFFECT FROM 6 PM WEDNESDAY TO NOON MDT
SATURDAY...
* WHAT...FOR THE WINTER WEATHER ADVISORY, SNOW EXPECTED. THERE IS A
LIKELIHOOD OF MINOR TO MODERATE WINTER WEATHER IMPACTS. TOTAL SNOW
ACCUMULATIONS BETWEEN 1 AND 7 INCHES OF ADDITIONAL SNOW. WINDS
GUSTING AS HIGH AS 35 MPH. FOR THE WINTER STORM WARNING, HEAVY
SNOW EXPECTED. THERE IS A LIKELIHOOD OF EXTREME WINTER STORM
IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 7 INCHES IN THE
LOWER ELEVATIONS AND 20 TO 40 INCHES IN THE HIGHER ELEVATIONS
INCLUDING MARIAS PASS. WINDS GUSTING AS HIGH AS 60 MPH.
* WHERE...BAD ROCK CANYON, POLEBRIDGE, MARIAS PASS, GLACIER NATIONAL
PARK, ESSEX, AND HIGHWAY 83 BIGFORK TO SWAN LAKE.
* WHEN...FOR THE WINTER WEATHER ADVISORY, UNTIL 6 PM MDT WEDNESDAY.
FOR THE WINTER STORM WARNING, FROM 6 PM WEDNESDAY TO NOON MDT
SATURDAY.
* IMPACTS...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. FOR EXTREME WINTER STORM IMPACTS, EXPECT SUBSTANTIAL
DISRUPTIONS TO NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR
IMPOSSIBLE TRAVELING CONDITIONS. TRAVEL IN THE IMPACTED AREAS IS
NOT ADVISED. EXTENSIVE AND WIDESPREAD CLOSURES AND DISRUPTIONS TO
INFRASTRUCTURE MAY OCCUR. LIFE SAVING ACTIONS MAY BE NEEDED. THE
HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY EVENING AND
WEDNESDAY MORNING COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY
WINDS COULD BRING DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
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.
IDZ006-111745-
/O.UPG.KMSO.WS.A.0002.260312T0000Z-260314T1800Z/
/O.NEW.KMSO.WS.W.0002.260312T0000Z-260314T1800Z/
SOUTHERN CLEARWATER MOUNTAINS-
1042 AM PDT TUE MAR 10 2026
...WINTER STORM WARNING IN EFFECT FROM 5 PM WEDNESDAY TO 11 AM PDT
SATURDAY ABOVE 5000 FEET...
* WHAT...HEAVY SNOW EXPECTED ABOVE 5000 FEET. THERE IS A LIKELIHOOD
OF EXTREME WINTER STORM IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN
2 AND 6 INCHES IN THE LOWER ELEVATIONS AND 30 TO 60 INCHES IN THE
HIGHER ELEVATIONS. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...DIXIE, POWELL AND LOLO PASS.
* WHEN...FROM 5 PM WEDNESDAY TO 11 AM PDT SATURDAY.
* IMPACTS...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. FOR EXTREME WINTER STORM IMPACTS, EXPECT SUBSTANTIAL
DISRUPTIONS TO NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR
IMPOSSIBLE TRAVELING CONDITIONS. TRAVEL IN THE IMPACTED AREAS IS
NOT ADVISED. EXTENSIVE AND WIDESPREAD CLOSURES AND DISRUPTIONS TO
INFRASTRUCTURE MAY OCCUR. LIFE SAVING ACTIONS MAY BE NEEDED. THE
HAZARDOUS CONDITIONS COULD IMPACT THE WEDNESDAY EVENING AND
THURSDAY MORNING COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY
WINDS COULD BRING DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
MTZ006-111745-
/O.UPG.KMSO.WS.A.0002.260312T0000Z-260314T1800Z/
/O.NEW.KMSO.WS.W.0002.260312T0000Z-260314T1800Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1142 AM MDT TUE MAR 10 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM WEDNESDAY TO NOON MDT
SATURDAY ABOVE 5000 FEET...
* WHAT...HEAVY SNOW EXPECTED ABOVE 5000 FEET. THERE IS A LIKELIHOOD
OF MAJOR WINTER WEATHER IMPACTS TO ISOLATED EXTREME WINTER STORM
IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 2 TO 6 INCHES IN THE
LOWER ELEVATIONS AND 20 TO 40 INCHES IN THE HIGHER ELEVATIONS.
WINDS GUSTING AS HIGH AS 50 MPH.
* WHERE...LOLO PASS AND HIGHWAY 93 SULA TO LOST TRAIL PASS.
* WHEN...FROM 6 PM WEDNESDAY TO NOON MDT SATURDAY.
* IMPACTS...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. FOR EXTREME WINTER STORM IMPACTS, EXPECT SUBSTANTIAL
DISRUPTIONS TO NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR
IMPOSSIBLE TRAVELING CONDITIONS. TRAVEL IN THE IMPACTED AREAS IS
NOT ADVISED. EXTENSIVE AND WIDESPREAD CLOSURES AND DISRUPTIONS TO
INFRASTRUCTURE MAY OCCUR. LIFE SAVING ACTIONS MAY BE NEEDED. THE
HAZARDOUS CONDITIONS COULD IMPACT THE THURSDAY MORNING AND EVENING
COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY WINDS COULD BRING
DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
MTZ004-111745-
/O.NEW.KMSO.WS.W.0002.260312T0000Z-260314T1800Z/
LOWER CLARK FORK REGION-
1142 AM MDT TUE MAR 10 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM WEDNESDAY TO NOON MDT
SATURDAY...
* WHAT...HEAVY SNOW EXPECTED. THERE IS A LIKELIHOOD OF EXTREME
WINTER STORM IMPACTS. TOTAL SNOW ACCUMULATIONS 1 TO 4 INCHES IN
THE LOWER ELEVATIONS AND 12 TO 24 INCHES IN THE HIGHER ELEVATIONS.
WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...HIGHWAY 200 THOMPSON FALLS TO PLAINS, EVARO HILL, I-90
LOOKOUT PASS TO HAUGAN, AND HIGHWAY 200 TROUT CREEK TO HERON.
* WHEN...FROM 6 PM WEDNESDAY TO NOON MDT SATURDAY.
* IMPACTS...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. FOR EXTREME WINTER STORM IMPACTS, EXPECT SUBSTANTIAL
DISRUPTIONS TO NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR
IMPOSSIBLE TRAVELING CONDITIONS. TRAVEL IN THE IMPACTED AREAS IS
NOT ADVISED. EXTENSIVE AND WIDESPREAD CLOSURES AND DISRUPTIONS TO
INFRASTRUCTURE MAY OCCUR. LIFE SAVING ACTIONS MAY BE NEEDED. THE
HAZARDOUS CONDITIONS COULD IMPACT THE THURSDAY MORNING AND EVENING
COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY WINDS COULD BRING
DOWN TREE BRANCHES.
* ADDITIONAL DETAILS...SNOW INTENSITY IS EXPECTED TO DECREASE DURING
THE DAY THURSDAY DURING THE STRONGEST WINDS THEN INCREASE AFTER
SUNSET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
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