704
WWUS45 KMSO 131137
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
537 AM MDT FRI MAR 13 2026
IDZ005-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
NORTHERN CLEARWATER MOUNTAINS-
437 AM PDT FRI MAR 13 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SATURDAY
* WHAT...HEAVY SNOW EXPECTED. THERE IS A LIKELIHOOD OF MAJOR TO
EXTREME WINTER STORM IMPACTS. TOTAL SNOW ACCUMULATIONS 2 TO 8
INCHES IN THE LOWER ELEVATIONS AND 20 TO 50 INCHES IN THE HIGHER
TERRAIN. WINDS GUSTING AS HIGH AS 30 MPH.
* WHERE...HIGHWAY 11 PIERCE TO HEADQUARTERS, ELK RIVER, AND PIERCE.
* WHEN...UNTIL 11 AM PDT SATURDAY.
* IMPACTS...FOR EXTREME WINTER STORM IMPACTS, EXPECT SUBSTANTIAL
DISRUPTIONS TO NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR
IMPOSSIBLE TRAVELING CONDITIONS IN THE HIGHER TERRAIN AND
BACKCOUNTRY. TRAVEL IN THE IMPACTED AREAS IS NOT ADVISED. LIFE
SAVING ACTIONS MAY BE NEEDED. THE HAZARDOUS CONDITIONS COULD
IMPACT THE 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.
IDZ006-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
SOUTHERN CLEARWATER MOUNTAINS-
437 AM PDT FRI MAR 13 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SATURDAY
ABOVE 5000 FEET...
* WHAT...HEAVY SNOW EXPECTED ABOVE 5000 FEET. THERE IS A LIKELIHOOD
OF MAJOR WINTER STORM IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 3
AND 8 INCHES IN THE LOWER ELEVATIONS AND 2 TO 5 FEET OF SNOW ABOVE
5,000 FEET. WINDS GUSTING UP TO 40 MPH.
* WHERE...DIXIE.
* WHEN...UNTIL 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. THE HAZARDOUS CONDITIONS COULD IMPACT THE FRIDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
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.
MTZ002-141145-
/O.CON.KMSO.WS.W.0003.000000T0000Z-260314T1800Z/
WEST GLACIER REGION-
537 AM MDT FRI MAR 13 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY
* WHAT...HEAVY SNOW. THERE IS THE LIKELIHOOD OF ONGOING MAJOR WINTER
WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 3 AND 12
INCHES.
* WHERE...BAD ROCK CANYON, MARIAS PASS, HIGHWAY 83 BIGFORK TO SWAN
LAKE, ESSEX, POLEBRIDGE, AND GLACIER NATIONAL PARK.
* WHEN...UNTIL NOON MDT SATURDAY.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. 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 AND EVENING COMMUTES, ESPECIALLY OVER HIGHER
PASSES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
MTZ004-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
LOWER CLARK FORK REGION-
537 AM MDT FRI MAR 13 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY
* WHAT...HEAVY SNOW. THERE IS A LIKELIHOOD OF DEVELOPING OR ONGOING
MAJOR WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS OF 6
TO 10 INCHES, EXCEPT 1 TO 5 INCHES IN THE LOWER ELEVATIONS.
* WHERE...I-90 LOOKOUT PASS TO HAUGAN, EVARO HILL, HIGHWAY 200
THOMPSON FALLS TO PLAINS, AND HIGHWAY 200 TROUT CREEK TO HERON.
* WHEN...UNTIL 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. THE HAZARDOUS CONDITIONS COULD IMPACT THE FRIDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
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.
MTZ006-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
537 AM MDT FRI MAR 13 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY
ABOVE 5000 FEET...
* WHAT...HEAVY SNOW ABOVE 5000 FEET. THERE IS THE LIKELIHOOD OF
ONGOING MAJOR WINTER WEATHER IMPACTS. ADDITIONAL SNOW
ACCUMULATIONS BETWEEN 3 AND 7 INCHES IN THE LOWER ELEVATIONS, WITH
UP TO 2 FEET ABOVE 5,000 FEET. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...LOLO PASS AND HIGHWAY 93 SULA TO LOST TRAIL PASS.
* WHEN...UNTIL 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. THE HAZARDOUS CONDITIONS COULD IMPACT THE FRIDAY
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.
MTZ007-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
BUTTE/BLACKFOOT REGION-
537 AM MDT FRI MAR 13 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY
* WHAT...HEAVY SNOW AND BLOWING SNOW EXPECTED. THERE IS A LIKELIHOOD
OF MAJOR WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 10 TO
20 INCHES FOR HIGHWAY 12 OVER MACDONALD PASS AND GEORGETOWN LAKE
AND THE HIGHER TERRAIN. TOTAL SNOW ACCUMULATIONS OF 1 TO 6 INCHES
AT LOWER ELEVATIONS. WINDS GUSTS TO 40 MPH.
* WHERE...HIGHWAY 12 GARRISON TO ELLISTON, HOMESTAKE PASS, BUTTE,
MACDONALD PASS, AND GEORGETOWN LAKE.
* WHEN...UNTIL NOON MDT SATURDAY.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. THE STRONG WINDS AND WEIGHT OF SNOW ON TREE LIMBS
MAY DOWN POWER LINES AND COULD CAUSE SPORADIC POWER OUTAGES. 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 AND EVENING
COMMUTES, ESPECIALLY OVER HIGHER PASSES. GUSTY WINDS COULD BRING
DOWN TREE BRANCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD DELAY ALL TRAVEL IF POSSIBLE. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION AND BE PREPARED FOR SUDDEN
CHANGES IN VISIBILITY. LEAVE PLENTY OF ROOM BETWEEN YOU AND THE
MOTORIST AHEAD OF YOU, AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. AVOID SUDDEN BRAKING OR ACCELERATION, AND BE ESPECIALLY
CAUTIOUS ON HILLS OR WHEN MAKING TURNS. MAKE SURE YOUR CAR IS
WINTERIZED AND IN GOOD WORKING ORDER.
MTZ043-141145-
/O.CON.KMSO.WS.W.0002.000000T0000Z-260314T1800Z/
POTOMAC/SEELEY LAKE REGION-
537 AM MDT FRI MAR 13 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SATURDAY
* WHAT...HEAVY SNOW EXPECTED. THERE IS A LIKELIHOOD OF MAJOR WINTER
STORM IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 6 TO 12 INCHES,
WITH 1 TO 3 FEET OF SNOW IN THE MOUNTAINS. WINDS GUSTING AS HIGH
AS 40 MPH.
* WHERE...HIGHWAY 200 BONNER TO GREENOUGH, HIGHWAY 83 SEELEY LAKE TO
CONDON, AND I-90 EAST MISSOULA TO BEARMOUTH.
* WHEN...UNTIL 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. THE HAZARDOUS CONDITIONS COULD IMPACT THE FRIDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
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.
PERSONS SHOULD DELAY ALL TRAVEL IF POSSIBLE. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION AND BE PREPARED FOR SUDDEN
CHANGES IN VISIBILITY. LEAVE PLENTY OF ROOM BETWEEN YOU AND THE
MOTORIST AHEAD OF YOU, AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. AVOID SUDDEN BRAKING OR ACCELERATION, AND BE ESPECIALLY
CAUTIOUS ON HILLS OR WHEN MAKING TURNS. MAKE SURE YOUR CAR IS
WINTERIZED AND IN GOOD WORKING ORDER.
MTZ005-131600-
/O.EXB.KMSO.WW.Y.0014.000000T0000Z-260313T1600Z/
MISSOULA/BITTERROOT VALLEYS-
537 AM MDT FRI MAR 13 2026
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM MDT THIS MORNING
* WHAT...SNOW. THERE IS A LIKELIHOOD OF ONGOING MODERATE WINTER
WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO 2 INCHES.
* WHERE...BITTERROOT VALLEY AND MISSOULA.
* WHEN...UNTIL 10 AM MDT THIS MORNING.
* 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.
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.
MTZ003-131800-
/O.CON.KMSO.WW.Y.0014.000000T0000Z-260313T1800Z/
FLATHEAD/MISSION VALLEYS-
537 AM MDT FRI MAR 13 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. THERE IS A LIKELIHOOD OF ONGOING MODERATE WINTER
WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES.
* WHERE...FLATHEAD LAKE, MISSION VALLEY, POLSON, AND FLATHEAD VALLEY.
* WHEN...UNTIL NOON MDT TODAY.
* 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 FRIDAY
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.
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