453
WWUS45 KMSO 181835
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1135 AM MST WED FEB 18 2026
MTZ007-043-190600-
/O.EXA.KMSO.WW.Y.0008.000000T0000Z-260219T0600Z/
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
1135 AM MST WED FEB 18 2026
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING
* WHAT...SNOW. SNOW SHOWERS HAVE STARTED TO CREATE SLICK CONDITIONS,
ESPECIALLY ALONG INTERSTATE 90 FROM CLINTON TO BUTTE. ADDITIONAL
SNOW ACCUMULATIONS UP TO TWO INCHES. LOCALLY HIGHER AMOUNTS
EXPECTED FROM DRUMMOND TO BUTTE THROUGH THIS EVENING. SCATTERED
STRONGER SHOWERS WILL REDUCE VISIBILITY DOWN TO 1/2 MILE, WITH
BLOWING SNOW.
* WHERE...HOMESTAKE PASS, BUTTE, GEORGETOWN LAKE, MACDONALD PASS,
HIGHWAY 83 SEELEY LAKE TO CONDON, HIGHWAY 12 GARRISON TO ELLISTON,
HIGHWAY 200 BONNER TO GREENOUGH, AND I-90 EAST MISSOULA TO
BEARMOUTH.
* WHEN...UNTIL 11 PM MST THIS EVENING.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS COULD IMPACT THE
WEDNESDAY EVENING COMMUTE, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...NORTHEAST WINDS BETWEEN 15 AND 25 MPH WITH
GUSTS TO 35 MPH HAVE BEEN GENERATING BITTERLY COLD WIND CHILL
TEMPERATURES AS COLD AS 30 BELOW ZERO. ANY EXPOSED SKIN COULD
BECOME FROSTBITTEN WITHIN 30 MINUTES IN THESE CONDITIONS. NEWBORN
LIVESTOCK MAY BE STRESSED.
WHILE NORTHEAST WINDS WILL LESSEN SOMEWHAT TONIGHT, WIND CHILL
TEMPERATURES NEAR 20 BELOW ZERO ARE POSSIBLE.
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.
IDZ005-182100-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260218T2100Z/
NORTHERN CLEARWATER MOUNTAINS-
1035 AM PST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS
AFTERNOON...
* WHAT...SNOW. THERE IS A LIKELIHOOD OF DEVELOPING OR ONGOING MINOR
WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO ONE
INCH.
* WHERE...HIGHWAY 11 PIERCE TO HEADQUARTERS, ELK RIVER, AND PIERCE.
* WHEN...UNTIL 1 PM PST THIS AFTERNOON.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
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.
IDZ006-182100-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260218T2100Z/
SOUTHERN CLEARWATER MOUNTAINS-
1035 AM PST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM PST THIS
AFTERNOON...
* WHAT...SNOW. THERE IS A LIKELIHOOD OF DEVELOPING OR ONGOING MINOR
WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO ONE
INCH.
* WHERE...HIGHWAY 12 LOWELL TO LOLO PASS, ELK CITY, AND DIXIE.
* WHEN...UNTIL 1 PM PST THIS AFTERNOON.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
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.
IDZ008-191600-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T1600Z/
LOWER HELLS CANYON/SALMON RIVER REGION-
1035 AM PST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM PST
THURSDAY...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR WINTER
WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 1 AND 2 INCHES.
* WHERE...HIGHWAY 95 SLATE CREEK TO RIGGINS AND WHITE BIRD GRADE.
* WHEN...UNTIL 8 AM PST THURSDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS COULD IMPACT THE
WEDNESDAY EVENING AND THURSDAY MORNING 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.
MTZ001-190000-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T0000Z/
KOOTENAI/CABINET REGION-
1135 AM MST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR WINTER
WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS OF HALF-INCH TO 2
INCHES, EXCEPT LOCALLY HIGHER NEAR THE IDAHO AND MONTANA BORDER,
INCLUDING TROY AND THE BULL LAKE AREA.
* WHERE...HIGHWAY 2 KALISPELL TO LIBBY, HIGHWAY 93 EUREKA TO
WHITEFISH, HIGHWAY 56 BULL LAKE ROAD, AND HIGHWAY 37 EUREKA TO
LIBBY.
* WHEN...UNTIL 5 PM MST THIS AFTERNOON.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS COULD IMPACT THE
WEDNESDAY EVENING 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.
MTZ002-191500-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T1500Z/
WEST GLACIER REGION-
1135 AM MST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST
THURSDAY...
* WHAT...SNOW AND COLD TEMPERATURES. THERE IS A LIKELIHOOD OF
ONGOING MINOR WINTER WEATHER IMPACTS. ADDITIONAL SNOW
ACCUMULATIONS BETWEEN 2 AND 3 INCHES, ALONG WITH GUSTY NORTHEAST
WINDS OF 30 TO 35 MPH.
* WHERE...MARIAS PASS, ESSEX, POLEBRIDGE, HIGHWAY 83 BIGFORK TO SWAN
LAKE, BAD ROCK CANYON, AND GLACIER NATIONAL PARK.
* WHEN...UNTIL 8 AM MST THURSDAY.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES.
MODERATE WINTER WEATHER IMPACTS, EXPECT DISRUPTIONS TO NORMAL
ACTIVITIES.USE CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS
COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING COMMUTES,
ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...NORTHEAST WINDS BETWEEN 15 AND 25 MPH WITH
GUSTS TO 35 MPH HAVE BEEN GENERATING BITTERLY COLD WIND CHILL
TEMPERATURES AS COLD AS 30 BELOW ZERO. ANY EXPOSED SKIN COULD
BECOME FROSTBITTEN WITHIN 30 MINUTES IN THESE CONDITIONS. NEWBORN
LIVESTOCK MAY BE STRESSED.
WHILE NORTHEAST WINDS WILL LESSEN SOMEWHAT TONIGHT, WIND CHILL
TEMPERATURES NEAR 20 BELOW ZERO ARE POSSIBLE.
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.
MTZ003-190000-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T0000Z/
FLATHEAD/MISSION VALLEYS-
1135 AM MST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...SNOW. THERE IS A LIKELIHOOD OF DEVELOPING OR ONGOING MINOR
WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO ONE
INCH.
* WHERE...FLATHEAD LAKE, MISSION VALLEY, FLATHEAD VALLEY, AND POLSON.
* WHEN...UNTIL 5 PM MST THIS AFTERNOON.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS COULD IMPACT THE
WEDNESDAY EVENING 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.
MTZ004-190600-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T0600Z/
LOWER CLARK FORK REGION-
1135 AM MST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
* WHAT...SNOW EXPECTED. THERE IS A LIKELIHOOD OF MINOR TO MODERATE
WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 1
AND 4 INCHES. LOCALLY HIGHER AMOUNTS FOR LOCATIONS ALONG THE IDAHO
AND MONTANA BORDER, INCLUDING LOOKOUT PASS, NOXON, TROUT CREEK AND
HERON.
* WHERE...I-90 LOOKOUT PASS TO HAUGAN, HIGHWAY 200 TROUT CREEK TO
HERON, HIGHWAY 200 THOMPSON FALLS TO PLAINS, AND EVARO HILL.
* WHEN...UNTIL 11 PM MST THIS EVENING.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES.
MODERATE WINTER WEATHER IMPACTS, EXPECT DISRUPTIONS TO NORMAL
ACTIVITIES. USE CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS
COULD IMPACT THE WEDNESDAY 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.
MTZ006-190300-
/O.CON.KMSO.WW.Y.0008.000000T0000Z-260219T0300Z/
BITTERROOT/SAPPHIRE MOUNTAINS-
1135 AM MST WED FEB 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
* WHAT...SNOW. THERE IS A LIKELIHOOD OF DEVELOPING OR ONGOING MINOR
WINTER WEATHER IMPACTS. ADDITIONAL SNOW ACCUMULATIONS UP TO TWO
INCHES.
* WHERE...HIGHWAY 93 SULA TO LOST TRAIL PASS AND LOLO PASS.
* WHEN...UNTIL 8 PM MST THIS EVENING.
* IMPACTS...WINTER TRAVELING CONDITIONS. FOR MINOR WINTER WEATHER
IMPACTS, EXPECT A FEW INCONVENIENCES TO NORMAL ACTIVITIES. USE
CAUTION WHILE DRIVING. THE HAZARDOUS CONDITIONS COULD IMPACT THE
WEDNESDAY EVENING 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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