763
FXUS65 KMSO 261008
AFDMSO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
408 AM MDT MON OCT 26 2026
DISCUSSION
KEY MESSAGES:
- ANTICIPATE COOLER TEMPERATURES AND PERIODS OF PRECIPITATION
THIS WEEK.
CURRENT SATELLITE AND RADAR IS SHOWING THE LOW PRESSURE SYSTEM
STARTING TO MOVE ONSHORE OVER WASHINGTON THIS MORNING. THIS SYSTEM
WILL CONTINUE TO MOVE EASTWARD BRINGING WIDESPREAD PRECIPITATION
TO THE NORTHERN ROCKIES LATER TODAY AND OVERNIGHT. SNOW LEVELS
TONIGHT ARE EXPECTED TO LOWER TO AROUND 4000-5000 FEET ALLOWING
FOR ACCUMULATING SNOW IN THE HIGHER TERRAIN. THE LATEST MODEL
GUIDANCE IS INDICATING THE HEAVIEST SNOW WILL BE ACROSS THE
MISSION MOUNTAINS UP INTO GLACIER NATIONAL PARK BY TUESDAY
AFTERNOON.
A SECONDARY DISTURBANCE WILL RE-ENFORCE THE TROUGH OF LOW PRESSURE
OVER THE PACIFIC NORTHWEST ON WEDNESDAY. THEN BY THE END OF THE
WEEK ANOTHER DISTURBANCE MOVES OVER THE STATE OF WASHINGTON. THIS
LATTER DISTURBANCE APPEARS TO CAUSE SOUTHWESTERLY FLOW TO DEVELOP
OVER THE NORTHERN ROCKIES ALLOWING SNOW LEVELS TO RISE AS WARMER
AIR MOVES INTO THE REGION ON FRIDAY. THE LONGER TERM MODELS ARE
STARTING TO TREND TOWARDS THIS LOW MOVING OVER THE REGION DURING
THE WEEKEND CAUSING LOWERING OF SNOW LEVELS ALONG WITH ANOTHER
ROUND OF WIDESPREAD PRECIPITATION.
AVIATION
PATCHY FOG IS STILL EXPECTED TO IMPACT PORTIONS OF THE
NORTHERN ROCKIES THIS MORNING EVEN THOUGH HIGHER CLOUDS ARE
STREAMING INTO THE REGION. A COLD FRONT IS EXPECTED TO PUSH
THROUGH NORTH CENTRAL IDAHO INTO WESTERN MONTANA LATER TODAY WITH
WIDESPREAD PRECIPITATION LINGERING THROUGHOUT THE NIGHT. SNOW
LEVELS WILL DROP TO AROUND 4000-5000 FEET BY TUESDAY MORNING.
MSO WATCHES/WARNINGS/ADVISORIES
MT...NONE.
ID...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page