779
FXUS65 KGGW 240822
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
222 AM MDT THU JUL 24 2025
DISCUSSION
KEY MESSAGES:
- DRY AND WARMER WEATHER EXPECTED TODAY.
- TEMPERATURES WILL CONTINUE TO WARM ON FRIDAY BUT THERE WILL BE
CHANCES FOR AFTERNOON AND EVENING AFTERNOON AND EVENING
THUNDERSTORMS.
- FREQUENT CHANCES FOR SHOWERS AND THUNDERSTORMS BEGIN SATURDAY
EVENING AND WILL CONTINUE ACROSS THE REGION FOR SEVERAL DAYS.
WEATHER PATTERN OVERVIEW:
MOIST GROUND, LIGHT WINDS AND RH AT OR NEAR 100 PERCENT WILL
ALLOW FOG TO DEVELOP IN SOME AREAS OF NE MONTANA EARLY THIS
MORNING. WILL MENTION PATCHY FOG IN THE FORECAST. ANY FOG THAT
DEVELOPS WILL DISSIPATE BY 9 AM WITH DAYTIME HEATING.
TODAY THROUGH FRIDAY MORNING A WEAK RIDGE OF HIGH PRESSURE BUILDS
INTO OUR REGION FROM THE SOUTH, BRINGING TEMPERATURES CLOSER TO
NORMAL FOR THIS TIME OF YEAR WHICH IS IN THE MID TO UPPER 80S IN
MOST AREAS.
FLOW ALOFT TURNS TO THE WSW ON FRIDAY AND SW OVER THE WEEKEND AS
AN UPPER TROUGH DIGS ALONG THE PACIFIC COAST. THIS WILL BRING
MOISTURE BACK INTO THE REGION. CHANCES FOR SHOWERS AND
THUNDERSTORMS WILL BEGIN FRIDAY AFTERNOON AND EVENING SOUTH OF THE
MISSOURI RIVER FOLLOWED BY MAINLY DRY WEATHER SATURDAY MORNING.
FREQUENT CHANCES FOR SHOWERS AND THUNDERSTORMS WILL BEGIN SATURDAY
AFTERNOON IN THE EAST AND ACROSS THE ENTIRE REGION SATURDAY
EVENING. FREQUENT WAVES IN SW FLOW ALOFT WILL CONTINUE THE SHOWERS
AND THUNDERSTORM CHANCES ON SUNDAY. WHILE AN UPPER RIDGE BUILDS
OVER THE REGION EARLY NEXT WEEK, MONSOONAL MOISTURE AND CONTINUED
WAVES ON THE PERIPHERY OF THE RIDGE WILL KEEP SHOWER AND
THUNDERSTORM CHANCES GOING OVER THE REGION FOR SEVERAL DAYS.
FORECAST CONFIDENCE & DEVIATIONS:
HIGH CONFIDENCE ON THE WARMER TEMPERATURES TODAY AND FRIDAY. LOW
CONFIDENCE ON THE TIMING AND LOCATION OF ANY FOG THIS MORNING. LOW
CONFIDENCE ON ANY SHOWER AND THUNDERSTORM CHANCES FRIDAY AFTERNOON
AND BEYOND.
OTHER THAN BEING MORE GENEROUS THAN THE NBM WITH THE PATCHY FOG
THIS MORNING, NO CHANGES TO THE BASE FORECAST FOR NOW.
AVIATION
LAST UPDATE: 0815Z
FLIGHT CAT RANGE: VFR - AIRPORT SHUTDOWN.
DISCUSSION: MAINLY VFR. HOWEVER, MOISTURE IN THE LOWER ATMOSPHERE
WILL BRING CHANCES FOR FOG THROUGH 15Z AT KOLF, KGGW, AND KSDY
RESPECTIVELY. CHANCES FOR THIS FOG COULD DROP VISIBILITY TO LESS
THAN 1SM AT TIMES MAINLY BETWEEN 10Z AND 14Z AND AIRPORT SHUTDOWN
COULD OCCUR. WILL HANDLE THE LOWEST VISIBILITIES THIS MORNING
WITH A TEMPO. FOG SHOULD CLEAR UP QUICKLY WITH SUNRISE LEAVING A
VFR CONDITIONS TODAY AND TONIGHT.
WIND: LIGHT AND VARIABLE EARLY THIS MORNING BECOMING SOUTH TO SW 5
TO 10 KNOTS BY LATE MORNING. WINDS WILL BECOME SE 5 TO 10 KNOTS
THIS EVENING.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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