888
FXUS65 KGGW 290915
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
215 AM MST MON DEC 29 2025
DISCUSSION
KEY MESSAGES:
- A WARM FRONT TODAY WILL BRING WARMER TEMPERATURES. STARTING
TUESDAY, TEMPERATURES WILL BE ABOVE NORMAL ON TUESDAY AND NEAR
NORMAL NORTH AND 5 TO 10 DEGREES ABOVE NORMAL SOUTH WEDNESDAY
AND BEYOND THIS WEEK.
- UPPER RIDGE WILL OVER THE ROCKY MOUNTAINS ALL WEEK WITH LIMITED
CHANCES FOR ANY PRECIPITATION.
WEATHER PATTERN OVERVIEW:
A WARM FRONT WILL MOVE ACROSS EASTERN MONTANA TODAY PUSHING THE
ARCTIC AIR TO THE EAST. LOW LEVEL INVERSIONS, COLD START AND SNOW
COVER WILL SLOW THE TEMPERATURE RISES SOMEWHAT TODAY. AN UPPER
RIDGE WILL BE ALONG THE ROCKY MOUNTAINS MOST OF THE TIME THIS WEEK
WITH NW FLOW OVER THE FORECAST AREA. A SHORTWAVE TROUGH IN THE NW
FLOW ALOFT TO THE NORTHEAST OF THE AREA MAY COME CLOSE ENOUGH TO
BRING A SLIGHT CHANCE FOR LIGHT SNOW TO THE FAR NORTHEAST ON
WEDNESDAY. IT WILL ALSO BRING A BACK DOOR COLD FRONT TUESDAY NIGHT
WITH SOMEWHAT COLDER TEMPERATURES ON WEDNESDAY IN MOST AREAS.
THE RIDGE MOVES EAST ACROSS THE FORECAST AREA ON SATURDAY AND
FLATTENS WITH A SHORTWAVE MOVING THROUGH THE AREA SATURDAY NIGHT
WITH CHANCES FOR MIXED PRECIPITATION.
FORECAST CONFIDENCE & DEVIATIONS:
THERE IS MODERATE CONFIDENCE IN TEMPERATURES THROUGH FRIDAY.
THERE IS LOW CONFIDENCE ON THE CHANCES FOR ANY LIGHT SNOW
OCCURRING ON WEDNESDAY IN THE NORTHEAST PART OF THE AREA.
LITTLE OR NO DEVIATIONS FROM THE NBM.
AVIATION
EXPECTED FLIGHT CATEGORY: VFR
SYNOPSIS: THERE WILL BE SOME MID AND HIGH CLOUDS AT TIMES TODAY IN
MOSTLY CLEAR SKIES. THEN, WIDESPREAD MID AND HIGH CLOUDS ARE
EXPECTED TONIGHT.
WINDS: VARIABLE LESS THAN 10 KNOTS THIS MORNING BECOMING WEST TO
SW 5 TO 10 KNOTS THIS AFTERNOON AND TONIGHT.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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