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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.



&&



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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.



&&



$$