499
WWUS45 KMSO 311634 CCA
WSWMSO
URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE MISSOULA MT
1034 AM MDT TUE MAR 31 2026
IDZ006-012145-
/O.COR.KMSO.WS.A.0003.260402T0600Z-260403T1200Z/
SOUTHERN CLEARWATER MOUNTAINS-
934 AM PDT TUE MAR 31 2026
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH LATE
THURSDAY NIGHT...
* WHAT...HEAVY SNOW POSSIBLE. THERE IS A CHANCE OF MODERATE TO MAJOR
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS OF 5 TO 11 INCHES
POSSIBLE ABOVE 4000 FEET, INCLUDING LOLO PASS, DIXIE AND ELK CITY.
2 TO 5 INCHES POSSIBLE BELOW 4000 FEET.
* WHERE...DIXIE, ELK CITY, AND HIGHWAY 12 LOWELL TO LOLO PASS.
* WHEN...FROM WEDNESDAY EVENING THROUGH LATE THURSDAY NIGHT.
* 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. 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 THURSDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...HEAVY, WET SNOW MAY CAUSE POWER OUTAGES AND
TREE DAMAGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
MTZ006-007-043-012145-
/O.COR.KMSO.WS.A.0003.260402T1200Z-260403T1200Z/
BITTERROOT/SAPPHIRE MOUNTAINS-BUTTE/BLACKFOOT REGION-
POTOMAC/SEELEY LAKE REGION-
1034 AM MDT TUE MAR 31 2026
...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
* WHAT...HEAVY SNOW POSSIBLE. THERE IS A CHANCE OF MODERATE TO MAJOR
WINTER WEATHER IMPACTS. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 12
INCHES POSSIBLE FOR TERRAIN ABOVE 5500 FEET, INCLUDING MACDONALD
PASS, HOMESTAKE PASS, LOST TRAIL PASS AND LOLO PASS. 2 TO 6 INCHES
POSSIBLE DOWN TO 3000 FEET, INCLUDING BUTTE, SEELEY LAKE AND
ANACONDA. WINDS COULD GUST AS HIGH AS 35 MPH.
* WHERE...BUTTE, HIGHWAY 12 GARRISON TO ELLISTON, I-90 EAST MISSOULA
TO BEARMOUTH, GEORGETOWN LAKE, HIGHWAY 93 SULA TO LOST TRAIL PASS,
HIGHWAY 83 SEELEY LAKE TO CONDON, LOLO PASS, MACDONALD PASS,
HOMESTAKE PASS, AND HIGHWAY 200 BONNER TO GREENOUGH.
* WHEN...FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT.
* 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. 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 THURSDAY
MORNING AND EVENING COMMUTES, ESPECIALLY OVER HIGHER PASSES.
* ADDITIONAL DETAILS...HEAVY, WET SNOW MAY CAUSE POWER OUTAGES AND
TREE DAMAGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page