385
FXUS65 KMSO 251009
AFDMSO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
409 AM MDT SUN OCT 25 2026
DISCUSSION
KEY MESSAGES:
- ANOTHER NICE FALL DAY BEFORE A RETURN TO UNSETTLED WEATHER
A WEAK RIDGE OF HIGH PRESSURE WILL CONTINUE TO BE OVER THE
NORTHERN ROCKIES TODAY ALLOWING FOR SEASONAL TEMPERATURES AND DRY
CONDITIONS.
A LOW PRESSURE SYSTEM WILL BEGIN TO PUSH IN TO THE PACIFIC
NORTHWEST ON MONDAY. PRECIPITATION ASSOCIATED WITH THIS LOW WILL
BEGIN TO PUSH INTO NORTH CENTRAL IDAHO BY MONDAY AFTERNOON AND
THEN ACROSS THE REMAINDER OF THE REGION DURING THE OVERNIGHT
HOURS. A SECONDARY DISTURBANCE WILL DIG ALONG THE COAST BY MID
WEEK, ESTABLISHING A DEEP TROUGH OVER THE WESTERN UNITED STATES.
ANOTHER SIGNIFICANT LOW APPEARS TO MOVE INTO THE PACIFIC
NORTHWEST, BUT THE MODELS DIVERGE ON THE TRACK OF THIS LOW AND ITS
IMPACTS ON THE NORTHERN ROCKIES. THE REGION SHOULD BE PREPARED
FOR TEMPERATURES RUNNING AROUND 5 DEGREES BELOW SEASONAL AVERAGES
THIS COMING WEEK WITH PERIODS OF PRECIPITATION. SNOW LEVELS WILL
BE HOVERING AROUND 4000-5000 FEET THROUGHOUT THE WEEK, ESPECIALLY
DURING THE OVERNIGHT HOURS ALLOWING ACCUMULATING SNOW IN THE
HIGHER TERRAIN.
AVIATION
A WEAK RIDGE OF HIGH PRESSURE WILL REMAIN OVER THE
REGION TODAY. CLEAR SKIES LAST NIGHT HAS ALLOWED FOR THE
DEVELOPMENT OF PATCHY FOG WITH KMSO HAVING THE BIGGEST IMPACT THIS
MORNING. THE FOG WILL BE DIMINISH BY LATE MORNING. HIGH LEVEL
CLOUDS WILL BE MOVING INTO THE REGION AS A LOW PRESSURE SYSTEM
BEGINS TO MOVE TOWARDS THE REGION.
MSO WATCHES/WARNINGS/ADVISORIES
MT...NONE.
ID...NONE.
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