301
FXUS65 KGGW 181028
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
328 AM MST THU DEC 18 2025
DISCUSSION
KEY MESSAGES:
- A BLIZZARD WARNING AND COLD WEATHER ADVISORY CONTINUE FOR FAR
NE MONTANA EARLY THIS MORNING.
- TEMPERATURES TURN MILDER THROUGH FRIDAY, BUT PATCHY BLOWING SNOW
AND LIGHT MIXED PRECIPITATION IS LIKELY TONIGHT.
- A SLIGHTLY WARMER THAN NORMAL AND LESS UNSETTLED PATTERN IS
FAVORED NEXT WEEK.
WEATHER PATTERN OVERVIEW:
BLIZZARD CONDITIONS ARE GRADUALLY MOVING OUT OF THE AREA TO THE
SOUTHEAST THIS MORNING AS FALLING SNOW AND STRONG WIND GUSTS ARE
STARTING TO DIMINISH. TRAVEL WILL CONTINUE TO BE IMPACTED FROM THE
AMOUNT OF SNOW AND DRIFTING THAT OCCURRED. THE NORTHEAST ZONES
WILL CONTINUE TO HAVE WIND CHILLS IN THE 20S BELOW FOR SEVERAL
MORE HOURS IN A COLD WEATHER ADVISORY.
AS A WARMING TREND ENSUES INTO FRIDAY, A SURFACE WARM FRONT WILL
BRING SOME INCREASE IN WINDS AGAIN OUT OF THE WEST AND LIGHT
MIXED PRECIPITATION TONIGHT WITH THE OVERRUNNING WARMER AIR. AT
THIS TIME, MINOR IMPACTS ARE EXPECTED WITH TRACES OF ICE
ACCUMULATION, PATCHY BLOWING SNOW AND GUSTS UP TO AROUND 50 MPH.
HOWEVER, ANY NOTABLE INCREASE IN PRECIPITATION AMOUNTS OR WINDS
WILL WARRANT CONSIDERATION OF A HEADLINE.
FORECAST CONFIDENCE & DEVIATIONS:
BLENDED IN HIGHER END AND HIGHER RESOLUTION GUIDANCE FOR WINDS
THROUGH FRIDAY, BUT GENERALLY STUCK WITH THE BASE FORECAST.
CONFIDENCE IS MODERATE FOR THE EXTENT OF TEMPERATURE VARIATIONS
THROUGH THE WEEKEND. CONFIDENCE IS HIGH FOR AT LEAST PATCHY
BLOWING SNOW RETURNING TONIGHT ALONG WITH LIGHT MIXED
PRECIPITATION.
-JEZ
AVIATION
UPDATED: 1000Z
FLIGHT CATEGORY: VFR - MVFR, IFR BEFORE 14Z FOR KSDY/KGDV
DISCUSSION: NEAR BLIZZARD CONDITIONS LINGER EARLY THIS MORNING IN
THE VICINITY OF KSDY AND KGDV, BUT SKIES WILL BEGIN TO CLEAR BY
15Z. GUSTY NORTHWEST WINDS GRADUALLY DECREASE THIS MORNING,
SETTLING TO AROUND 10 KNOTS AND BECOMING MORE VARIABLE SOON AFTER
DAYBREAK.
GGW WATCHES/WARNINGS/ADVISORIES
COLD WEATHER ADVISORY UNTIL 10 AM MST THIS MORNING FOR CENTRAL
AND SOUTHERN VALLEY-DANIELS-EASTERN ROOSEVELT-NORTHERN PHILLIPS-
NORTHERN VALLEY-RICHLAND-SHERIDAN-WESTERN ROOSEVELT.
BLIZZARD WARNING UNTIL 6 AM MST EARLY THIS MORNING FOR DANIELS-
DAWSON-EASTERN ROOSEVELT-MCCONE-RICHLAND-SHERIDAN-WESTERN
ROOSEVELT-WIBAUX.
WINTER WEATHER ADVISORY UNTIL 6 AM MST EARLY THIS MORNING FOR
PRAIRIE.
WEATHER.GOV/GLASGOW
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