222
FXUS65 KGGW 031015
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
315 AM MST WED DEC 3 2025
DISCUSSION
KEY MESSAGES:
- TEMPERATURE CONTINUES TO SWING WITH AN UNSETTLED WEATHER
PATTERN OVER THE NEXT WEEK.
- PERIODS OF LIGHT SNOW REMAIN POSSIBLE FOR THE WEEKEND (THURSDAY
THROUGH SUNDAY).
WEATHER PATTERN OVERVIEW:
TODAY AND TOMORROW: LINGERING, ISOLATED SNOWFALL WILL CONTINUE
THROUGH THE EARLY HOURS OF THE MORNING AS THE LOW PRESSURE
CLIPPER-ISH SYSTEM MOVES SOUTHEAST OUT OF MONTANA. VERY LITTLE TO
NO ADDITIONAL ACCUMULATION IS EXPECTED. TODAY WILL BE DRY AND
COLD AS A STRONG ARCTIC HIGH PRESSURE SYSTEM DROPS SOUTH INTO THE
DAKOTAS. WARMER AIR MOVES BACK INTO THE AREA THURSDAY AFTERNOON
WITH THE PASSAGE OF A WARM FRONT AND UPPER RIDGING SHORTLY BEHIND.
TOMORROW AFTERNOON WILL HAVE QUITE SEASONABLY AVERAGE
TEMPERATURES! THIS, UNFORTUNATELY, MAY CAUSE ICY ROADS AS THE
SNOWPACK (2" AT WFO GLASGOW) PARTIALLY OR FULLY MELTS AND FREEZES
OVERNIGHT.
FRIDAY THROUGH SUNDAY: MULTIPLE EMBEDDED SHORT-WAVE DISTURBANCES
ALONG PERSISTENT NORTHWESTERLY FLOW WILL BRING REPEATING CHANCES
FOR SNOW ACROSS NE MONTANA. TEMPERATURES ARE EXPECTED TO OSCILLATE
BACK AND FORTH FROM ABOVE, TO NEAR, TO BELOW NORMAL AT TIMES WITH
EACH WAVE.
FORECAST CONFIDENCE & DEVIATIONS:
RAISED CURRENT OVERNIGHT MIN TEMPERATURES, BLENDED HRRR AND NBM90
FRO DAY 1-2 WINDS, RAISED POPS FOR THE EARLY MORNING TO REFLECT
CURRENT OBS.
TODAY THROUGH TONIGHT PRECIP AND TEMPERATURES: HIGH CONFIDENCE.
THURSDAY THROUGH THE WEEKEND TEMPERATURES: HIGH CONFIDENCE.
THURSDAY THROUGH THE WEEKEND PRECIP: MODERATE CONFIDENCE.
AVIATION
LAST UPDATED: 1000Z
FLIGHT CAT RANGE: MVFR - VFR
DISCUSSION: LINGERING LIGHT SNOW MOVING EAST WILL DIMINISH OVER
THE NEXT 2-3 HOURS. MVFR CEILINGS THIS MORNING WILL IMPROVE TO
VFR FOR ALL TERMINALS BY MID-MORNING TODAY.
WIND: FROM THE N AROUND 10 TO 15 KTS BECOMING LIGHT AND VARIABLE
BY MORNING BECOMING S AND SE AROUND 5 TO 10 KTS IN THE AFTERNOON.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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