689
WWUS45 KMSO 220045
WSWMSO
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
645 PM MDT SAT JUN 21 2025
MTZ002-221800-
/O.CON.KMSO.WS.W.0008.000000T0000Z-250622T1800Z/
WEST GLACIER REGION-
645 PM MDT SAT JUN 21 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SUNDAY
ABOVE 5000 FEET...
* WHAT...HEAVY WET SNOW ABOVE 5000 FEET. LIKELIHOOD OF ONGOING MAJOR
IMPACTS FROM 6 TO 10 INCHES OF SNOW IS 90 PERCENT, AND 10 TO 18
INCHES OF SNOW IS 50 PERCENT IN THE HIGHEST TERRAIN. WIND GUSTS UP
TO 40 MPH IN EXPOSED AREAS.
* WHERE...GLACIER NATIONAL PARK HIGHER ELEVATIONS INCLUDING
GOING-TO-THE-SUN ROAD AND LOGAN PASS.
* WHEN...UNTIL NOON MDT SUNDAY.
* IMPACTS...FOR MAJOR IMPACTS FROM SNOW, EXPECT CONSIDERABLE
DISRUPTIONS TO NORMAL ACTIVITIES. DANGEROUS OR IMPOSSIBLE
CONDITIONS. AVOID TRAVEL IN THE IMPACTED AREAS IF POSSIBLE.
WIDESPREAD CLOSURES AND DISRUPTIONS TO INFRASTRUCTURE MAY OCCUR.
FOR EXTREME IMPACTS FROM SNOW, EXPECT SUBSTANTIAL DISRUPTIONS TO
NORMAL ACTIVITIES. EXTREMELY DANGEROUS OR IMPOSSIBLE CONDITIONS.
TRAVEL IN THE IMPACTED AREAS IS NOT ADVISED. LIFE SAVING ACTIONS
MAY BE NEEDED. INCREASED RISK OF HYPOTHERMIA.
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.
IDZ006-009-010-MTZ006-007-043-221800-
/O.CON.KMSO.WW.Y.0035.000000T0000Z-250622T1800Z/
SOUTHERN CLEARWATER MOUNTAINS-WESTERN LEMHI COUNTY-EASTERN LEMHI
COUNTY-BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
645 PM MDT SAT JUN 21 2025 /545 PM PDT SAT JUN 21 2025/
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT /11 AM
PDT/ SUNDAY ABOVE 6,000 FEET...
* WHAT...SNOW EXPECTED ABOVE 6,000 FEET. LIKELIHOOD OF MINOR IMPACTS
FROM SNOW IS GREATER THAN 60 PERCENT. TOTAL SNOW ACCUMULATIONS UP
TO 4 INCHES. WIND GUSTS AROUND 30 MPH IN EXPOSED AREAS.
* WHERE...IN IDAHO, EASTERN LEMHI COUNTY, SOUTHERN CLEARWATER
MOUNTAINS, AND WESTERN LEMHI COUNTY. IN MONTANA,
BITTERROOT/SAPPHIRE MOUNTAINS, BUTTE/BLACKFOOT REGION, AND
POTOMAC/SEELEY LAKE REGION.
* WHEN...UNTIL NOON MDT /11 AM PDT/ SUNDAY.
* IMPACTS...FOR MODERATE IMPACTS FROM SNOW, EXPECT DISRUPTIONS TO
NORMAL ACTIVITIES. HAZARDOUS TRAVELING CONDITIONS. USE EXTRA
CAUTION WHILE DRIVING. CLOSURES AND DISRUPTIONS TO INFRASTRUCTURE
MAY OCCUR. FOR MINOR IMPACTS FROM SNOW, EXPECT A FEW
INCONVENIENCES TO NORMAL ACTIVITIES. USE CAUTION WHILE DRIVING.
INCREASED RISK OF HYPOTHERMIA.
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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