354
FXUS65 KGGW 182047
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
147 PM MST THU DEC 18 2025
DISCUSSION
KEY MESSAGES:
- A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR MAINLY FREEZING
RAIN THAT IS POSSIBLE NORTH OF A MALTA TO CIRCLE TO GLENDIVE
LINE TONIGHT INTO EARLY FRIDAY.
- TEMPERATURES TURN MILDER THROUGH FRIDAY, THEN DROP ON SATURDAY.
HIGH WINDS ARE A SLIGHT POSSIBILITY WITH A COLD FRONT LATE
FRIDAY.
- A SLIGHTLY WARMER THAN NORMAL AND LESS UNSETTLED PATTERN IS
FAVORED NEXT WEEK BUT A WEAK SYSTEM MAY BRING SOME WINTRY PRECIP
MONDAY.
WEATHER PATTERN OVERVIEW:
A WARM FRONT WILL MOVE IN TONIGHT BRINGING SOME SNOW THEN THE
POSSIBILITY OF FREEZING RAIN FROM THE WEST. THIS LOOKS TO AFFECT
MAINLY AREAS NORTH OF A MALTA TO CIRCLE TO GLENDIVE LINE. A WINTER
WEATHER ADVISORY HAS BEEN ISSUED FOR A GLAZE UP TO 0.05" WHICH
WOULD MAKE ROADS AND SIDEWALKS VERY SLICK.
FRIDAY, THE SYSTEM MOVES TO OUR EAST. SUNSHINE AND WARMER TEMPS
SHOULD MELT MOST OF THE ICE BY THE AFTERNOON. BUT ANOTHER COLD
FRONT WILL MOVE IN DURING THE AFTERNOON THAT WILL BRING FALLING
AFTERNOON TEMPS FROM THE NORTH. WIND GUSTS MAY WARRANT SOME
ATTENTION IN REGARD TO HIGH WIND HIGHLIGHTS, BUT WILL LEAVE THAT
TO LATER SHIFTS TO GET A BETTER LOOK AT.
COLD CONDITIONS FRIDAY NIGHT AND SATURDAY COULD MEAN BRIEF COLD
ADVISORY CONDITIONS NEAR THE CANADIAN BORDER.
A SLIGHT WARM-UP ENSUES SUNDAY AND MONDAY BUT PRECIP MONDAY COULD
BRING HEADACHES WITH MIXED PRECIPITATION. OTHERWISE, NEXT WEEK
FEATURES TEMPERATURES NEAR SEASONABLE LEVELS WITH SLIGHT CHANCES
FOR PRECIPITATION.
FORECAST CONFIDENCE & DEVIATIONS:
BASICALLY STUCK WITH THE NBM ON THIS PACKAGE, BUT DID MIX WINDS
LATE FRIDAY WITH NBM90. TFJ
AVIATION
UPDATED: 2045Z
FLIGHT CATEGORY: VFR BUT SOME MVFR CONDITIONS ARE POSSIBLE LATE
TONIGHT/EARLY FRIDAY.
DISCUSSION: A WARM FRONT WILL BRING IN LOWERING CLOUDS, SOME SNOW
AND THE POSSIBILITY OF FREEZING RAIN LATE TONIGHT AND EARLY FRIDAY
BEFORE MOVING INTO THE DAKOTAS FRIDAY.
WINDS: WILL INCREASE FROM THE SE TONIGHT THEN TURN TO THE SW THEN
NW FRIDAY. LOOK FOR GUSTS UP 35 KTS FRIDAY.
LLWS CAN BE EXPECTED AT TIMES LATE TONIGHT AND FRIDAY. TFJ
GGW WATCHES/WARNINGS/ADVISORIES
WINTER WEATHER ADVISORY FROM 8 PM THIS EVENING TO 5 AM MST
FRIDAY FOR CENTRAL AND SOUTHEAST PHILLIPS-NORTHERN PHILLIPS.
WINTER WEATHER ADVISORY FROM 11 PM THIS EVENING TO 11 AM MST
FRIDAY FOR CENTRAL AND SOUTHERN VALLEY-DANIELS-DAWSON-EASTERN
ROOSEVELT-MCCONE-NORTHERN VALLEY-RICHLAND-SHERIDAN-WESTERN
ROOSEVELT.
WEATHER.GOV/GLASGOW
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