418
FXUS65 KMSO 231007
AFDMSO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
407 AM MDT FRI OCT 23 2026
DISCUSSION
KEY MESSAGES:
- WIDESPREAD PRECIPITATION TODAY WITH MOUNTAIN SNOW.
- ACTIVE WEATHER PATTERN THROUGH AT LEAST MID NEXT WEEK.
TWO DISTURBANCES WILL BE COLLIDING OVER THE NORTHERN ROCKIES
TODAY. A LOW PRESSURE SYSTEM THAT IS OVER THE GREAT BASIN REGION
AND A TROUGH OF LOW PRESSURE MOVING INTO THE PACIFIC NORTHWEST.
THESE DISTURBANCES WILL BE BRINGING WIDESPREAD PRECIPITATION TO
THE REGION ALONG WITH CAUSING COOLER TEMPERATURES. THE BULK OF THE
PRECIPITATION IS EXPECTED TO FALL ACROSS WEST CENTRAL DOWN INTO
SOUTHWEST MONTANA. SNOW LEVELS ARE EXPECTED TO FALL TO AROUND 5000
FEET BY THIS EVENING CAUSING ACCUMULATING SNOW TO LEMHI COUNTY AND
SOUTHWEST MONTANA. THE MOST IMPACTFUL SNOW IS EXPECTED ALONG THE
CONTINENTAL DIVIDE AROUND BUTTE, SO A WINTER WEATHER ADVISORY HAS
BEEN ISSUED.
THE REGION WILL EXPERIENCE A SHORT BREAK IN THE PRECIPITATION LATE
SATURDAY INTO SUNDAY AS A TRANSITORY RIDGE SLIDES OVER THE REGION,
BUT ANOTHER LOW PRESSURE SYSTEM IS EXPECTED TO PUSH INTO THE
PACIFIC NORTHWEST BY MONDAY. THE MODELS DIVERGE ON HOW THIS LOW
WILL TRACK OVER THE WESTERN UNITED STATES, BUT THE REGION SHOULD
ANTICIPATED SEASONAL TEMPERATURES ALONG WITH OCCASIONAL
PRECIPITATION THROUGH AT LEAST MID NEXT WEEK.
AVIATION
WIDESPREAD PRECIPITATION WILL IMPACT ALL TERMINALS
TODAY AS A LOW PRESSURE SYSTEM MOVES THROUGH THE REGION. THE
PRECIPITATION TYPE IS EXPECTED TO TRANSITION OVER TO SNOW AT KBTM
THIS AFTERNOON INTO THE EVENING CAUSING REDUCED VISIBILITY.
MSO WATCHES/WARNINGS/ADVISORIES
MT...WINTER WEATHER ADVISORY FROM 3 PM THIS AFTERNOON TO MIDNIGHT MDT
TONIGHT FOR BUTTE/BLACKFOOT REGION.
ID...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page