535
FXUS65 KGGW 241132
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
432 AM MST WED DEC 24 2025
DISCUSSION
KEY MESSAGES:
- A WINTRY MIX INCLUDING FREEZING RAIN POSSIBLE ON CHRISTMAS DAY.
- ANOTHER ROUND OF MIXED PRECIPITATION POSSIBLE FRIDAY INTO
SATURDAY.
WEATHER PATTERN OVERVIEW:
ALASKA LOW CONTINUES TO PUSH SOUTH OVER THE NEXT FEW DAYS BEFORE
ROTATING INTO THE PACIFIC NORTHWEST AND CROSSING THE NORTHERN
ROCKIES EARLY IN THE WEEKEND. MOISTURE WILL CONTINUE STREAMING
INTO MONTANA WITH THE STRONG ATMOSPHERIC RIVER PUSHING OVER
CALIFORNIA AND THE GREAT BASIN.
A SHORTWAVE LIFTING THROUGH THE SOUTHWEST FLOW WILL LIFT ACROSS
THE WEAK WINTER THERMAL BOUNDARY OVER CENTRAL MONTANA WITH
POSSIBLE OVERRUNNING PRECIPITATION FROM TONIGHT INTO CHRISTMAS
DAY. THERMAL PROFILES WITH WARM AIR ALOFT AND A COLDER BOUNDARY
LAYER WILL CREATE CONDITIONS FOR FREEZING RAIN AND ICE PELLETS
OVER MAINLY THE NORTHWEST PART OF THE CWA FROM ANY PRECIPITATION
THAT OCCURS, INTERMITTENTLY FROM TONIGHT THROUGH SATURDAY MORNING.
A STRONGER SHORTWAVE PUSHES THROUGH THE RIDGE ON FRIDAY NIGHT FOR
ANOTHER CHANCE FOR PRECIPITATION ALONG WITH GUSTY WINDS AND
DROPPING TEMPERATURES. AN ARCTIC AIRMASS WILL KEEP TEMPERATURES
DOWN BELOW NORMAL ON SATURDAY AND SUNDAY. A RIDGE IS EXPECTED TO
MOVE BACK IN ON MONDAY.
FORECAST CONFIDENCE & DEVIATIONS:
INCREASED POPS FOR TONIGHT AND THURSDAY MORNING SINCE THERE IS
DECENT AGREEMENT AMONG CAM MODELS FOR FREEZING RAIN. THIS LEADS TO
MODERATE TO HIGH CONFIDENCE FOR WIDESPREAD FREEZING RAIN ACROSS
MAINLY THE NORTHWEST ZONES TONIGHT THROUGH THURSDAY, WITH LOWER
CONFIDENCE FOR THE QPF AMOUNT AND ICE ACCUMULATION.
AVIATION
MOSTLY VFR TODAY WITH SCATTERED MID LEVEL CLOUDS. PRECIPITATION
WILL MOVE INTO THE REGION LATE TONIGHT, LEADING TO MVFR OR IFR
CONDITIONS. FREEZING RAIN/ICING CONDITIONS ARE POSSIBLE AT KGGW
AFTER 6Z THURSDAY.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page