400
FXUS65 KGGW 270800
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
200 AM MDT WED AUG 27 2025
DISCUSSION
KEY MESSAGES:
- DRY WEATHER WITH WARMER TEMPERATURES WILL CONTINUE THROUGH
THURSDAY MORNING.
- SOME MONSOONAL MOISTURE WILL DRIFT INTO NE MONTANA ON THURSDAY
AFTERNOON THROUGH SATURDAY.
WEATHER PATTERN OVERVIEW:
AN UPPER RIDGE REMAINS OVER THE AREA TO CONTINUE BRINGING SLIGHTLY
ABOVE AVERAGE TEMPERATURES.
A WAVE OF MONSOONAL MOISTURE WILL MOVE IN FROM THE SOUTH ON
THURSDAY AND REMAIN OVER THE AREA THROUGH SATURDAY. THE RAINFALL
AMOUNTS HAVE DRIFTED FURTHER NORTHWARD THAN PREVIOUS NBM MODEL
RUNS. MOST OF THE PRECIPITATION AMOUNTS ARE IN THE FAR WEST AND
SOUTHEAST, WITH LOW (30 PERCENT) CONFIDENCE OF ANY ONE LOCATION
RECEIVING ONE TENTH OF AN INCH OF RAIN FROM THURSDAY THROUGH
SATURDAY.
THERE IS LOW TO MODERATE (30 TO 50 PERCENT) CONFIDENCE OF A
SHORTWAVE TROUGH CLIMBING INTO THE AREA TO BRING THUNDERSTORMS ON
MONDAY. THEN THERE IS MODERATE (50 PERCENT) CONFIDENCE OF A COLD
FRONT MOVING THROUGH ON TUESDAY NEXT WEEK. THERE IS HIGH
CONFIDENCE OF TEMPERATURES DROPPING TO NEAR AND BELOW AVERAGE BY
WEDNESDAY. THERE IS LOW CONFIDENCE IN PRECIPITATION AMOUNTS ON
MONDAY THROUGH WEDNESDAY OF NEXT WEEK.
FORECAST CONFIDENCE & DEVIATIONS:
ADJUSTED WINDS WITH NBM 90 AND THE BASE FORECAST FOR DAY 1 THROUGH
DAY 3 OF THE FORECAST. INCREASED THE HIGH TEMPERATURE FORECAST A
FEW DEGREES FOR TODAY.
THERE IS LOW CONFIDENCE ON PRECIPITATION DURATION, AMOUNTS, AND
LOCATION FOR THURSDAY THROUGH SATURDAY. THE REMAINDER OF FORECAST
CONFIDENCE IS MAINLY IN THE WEATHER OVERVIEW ABOVE.
AVIATION
UPDATED: 0800Z
FLIGHT CAT: VFR.
DISCUSSION: QUIET WEATHER WITH MAINLY CLEAR SKIES OVER THE TAF
CYCLE. CLOUDS WILL INCREASE TONIGHT AS MONSOONAL MOISTURE ATTEMPTS
TO MOVE IN FROM THE SOUTH.
WINDS: FOR KGGW, NORTHEAST AT 5 TO 12 KTS. FOR ALL OTHER TAF
SITES, LIGHT AND VARIABLE BECOMING NORTHEAST AT 5 TO 15 KNOTS
AFTER 17Z.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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