862
FXUS65 KGGW 281035
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
335 AM MST FRI NOV 28 2025
DISCUSSION
KEY MESSAGES:
- WINTER STORM WARNINGS AND ADVISORIES ARE IN EFFECT THROUGH SATURDAY
MORNING.
- POST-THANKSGIVING TRAVEL WILL BE IMPACTED TODAY INTO SATURDAY.
- ARCTIC AIR WILL THEN MOVE IN FOR THE WEEKEND. LOWS SATURDAY
NIGHT LOOK TO BE BELOW ZERO FOR MOST OF THE AREA.
WEATHER PATTERN OVERVIEW:
A DEEPENING SURFACE LOW ORIGINATING OVER THE PNW WILL DESCEND
INTO SOUTHERN MONTANA AND WYOMING FRIDAY EVENING. AS CYCLOGENESIS
ORGANIZES OVER MONTANA THE INTENSIFYING LOW PRESSURE FRONTAL
SYSTEM WILL BRING A BAND OF ORGANIZED SNOWFALL WITH TOTALS OF 4"
TO 8" INCHES ACROSS MUCH OF THE STATE. ON THE BACKSIDE OF THIS
SYSTEM LIGHT WIDESPREAD SNOW WILL MOVE INTO THE AREA TAPERING OFF
WEST TO EAST BY SATURDAY MORNING.
TOTALS UPWARDS OF 8" FROM MALTA TO ZORTMAN ARE POSSIBLE,
ESPECIALLY IN AREAS OF HIGHER ELEVATION. AS MUCH AS 5" OR 6" IS
POSSIBLE IN NORTHERN DAWSON AND RICHLAND COUNTIES, NOTABLY THE BIG
SHEEP MTS.
LOWS SUNDAY AND MONDAY LOOK TO BE BELOW ZERO FOR MOST AREAS. THIS
WILL BE THE COLDEST TEMPERATURES OF THE SEASON THUS FAR.
ANOTHER WEAKER SYSTEM MOVES IN LATE MONDAY WITH LIGHT SNOW. LESS
THAN AN INCH ACCUMULATION IS EXPECTED AT THIS TIME.
FORECAST CONFIDENCE & DEVIATIONS:
LOWERED DAY 1 MIN AND MAX TEMPERATURES TO ACCOUNT FOR SNOW DEPTH.
NBM OTHERWISE.
AVIATION
A WINTER STORM MOVING INTO THE AREA WITHIN THE NEXT FEW HOURS
WILL SPREAD SNOW INTO THE TAF SITES THROUGH LATE FRIDAY NIGHT.
STEADY SNOW AND LOW CLOUDS WITH IFR CONDITIONS. MOSTLY LIGHT WINDS
BACKING FROM EAST TO NORTH WITH OCCASIONAL GUSTS OF 20 TO 30 KTS
TONIGHT AS THE SYSTEM MOVES EAST.
GGW WATCHES/WARNINGS/ADVISORIES
WINTER STORM WARNING UNTIL 5 AM MST SATURDAY FOR CENTRAL AND
SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-DAWSON-GARFIELD-
MCCONE-NORTHERN PHILLIPS-PETROLEUM-RICHLAND-SOUTHWEST PHILLIPS.
WINTER WEATHER ADVISORY UNTIL 11 AM MST SATURDAY FOR DANIELS-
EASTERN ROOSEVELT-NORTHERN VALLEY-PRAIRIE-SHERIDAN-WESTERN
ROOSEVELT-WIBAUX.
WEATHER.GOV/GLASGOW
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