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Effective:   2026-03-12 05:09:00 Local Time  
Expires:   2026-03-14 12:00:00 Local Time <-- EXPIRED! [Archived Message Only]
 
Event:   WINTER STORM WARNING
 
Alert:   WINTER STORM WARNING ISSUED MARCH 12 AT 5:09AM MDT UNTIL MARCH 14 AT 12:00PM MDT

* WHAT...HEAVY SNOW AND BLOWING SNOW EXPECTED. THERE IS A LIKELIHOODOF MAJOR WINTER WEATHER IMPACTS TO ISOLATED EXTREME WINTER STORM 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 BETWEEN 40 TO 60 MPH, WITH GUSTS OF 60 TO 80 MPH AT HIGHER ELEVATIONS. * WHERE...BUTTE, HIGHWAY 12 GARRISON TO ELLISTON, GEORGETOWN LAKE, MACDONALD PASS, AND HOMESTAKE PASS. * 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. 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. VERY STRONG WINDS COULD CAUSE EXTENSIVE TREE DAMAGE. * ADDITIONAL DETAILS...THE GREATEST CONCERN FOR STRONG AND DAMAGING WINDS ACROSS LOWER ELEVATIONS IS FOCUSED ALONG THE INTERSTATE 90 CORRIDOR BETWEEN GARRISON JUNCTION AND ANACONDA. PERIODS OF BLIZZARD CONDITIONS WILL IMPACT MACDONALD PASS, THE GEORGETOWN LAKE AREA, AND THE HIGHER ELEVATIONS THIS MORNING.
 
Instructions:   VIEW STORM REPORTS MAP. KNOW THE DIFFERENCE BETWEEN WATCH, WARNING, ADVISORY
 
Targt Area:   BUTTE BLACKFOOT REGION

This alert has expired and is maintained in our database for historical record only. For current active alerts please use search box top of this page.
 
 
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Issued by:   NWS Missoula MT [MSX]