777
FXUS65 KGGW 150629
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1229 AM MDT SAT AUG 15 2026
KEY MESSAGES
- DRIER WEATHER IS EXPECTED TODAY AFTER LINGERING SHOWERS END THIS
MORNING. TEMPERATURES SHOULD BE CLOSER TO NORMAL ON SUNDAY AND
MONDAY.
- OCCASIONAL CHANCES FOR SHOWERS CAN BE EXPECTED LATE TONIGHT,
SUNDAY NIGHT AND AGAIN MONDAY NIGHT AND TUESDAY.
DISCUSSION
WEATHER PATTERN OVERVIEW:
SHORTWAVE TROUGH OVER THE CANADIAN PRAIRIES AND NE MONTANA WILL
BRING RAIN SHOWERS EARLY THIS MORNING TO MAINLY THE WESTERN HALF
OF THE FORECAST AREA. THE TROUGH WILL MOVE TO THE EAST THIS
MORNING WHICH WILL ALLOW THE SHOWERS TO DIMINISH AROUND 12Z OR
SUNRISE. CLOUDS IN THE NORTHEAST ARE LOW ENOUGH IN SOME AREAS
THAT COULD END UP REACHING THE GROUND AND CREATE SOME FOG. AT THE
SAME TIME, THERE ARE AREAS OF CLEAR SKIES WITH MOIST GROUND THAT
COULD ALLOW FOR SOME FOG THIS MORNING. WILL MENTION PATCHY FOG TO
COVER THE FOG POSSIBILITIES.
AN UPPER RIDGE BUILDS INTO MONTANA TODAY ALONG WITH SURFACE HIGH
PRESSURE. SKIES WILL GRADUALLY CLEAR TODAY AND HIGHS WILL BE
SOMEWHAT WARMER THAN YESTERDAY BUT STILL BELOW NORMAL FOR MID
AUGUST.
A DISTURBANCE LATE TONIGHT AND SUNDAY MORNING WILL BRING CHANCES
FOR SHOWERS TO AREAS SOUTH OF FORT PECK LAKE.
SUNDAY WILL BE WARMER WITH HIGHS IN THE UPPER 70S TO MID 80S WITH
LIGHT WINDS. AN UPPER LEVEL DISTURBANCE SUNDAY NIGHT WILL BRING
CHANCES FOR SHOWERS AND THUNDERSTORMS TO THE AREA.
ANOTHER DISTURBANCE ALONG WITH A COLD FRONT WILL BRING CHANCES FOR
SHOWERS AND THUNDERSTORMS MONDAY NIGHT AND TUESDAY.
UPPER RIDGE BUILDS INTO THE AREA FOR WEDNESDAY, THURSDAY AND
FRIDAY WITH A RETURN TO WARMER AND DRIER CONDITIONS FOR THE END
OF THE WEEK.
FORECAST CONFIDENCE & DEVIATIONS:
NO DEVIATIONS FROM NBM THIS MORNING.
LOW CONFIDENCE OF CHANCES FOR SHOWERS SOUTH OF FORT PECK LAKE LATE
TONIGHT AND SUNDAY MORNING.
HIGH CONFIDENCE ON DRIER WEATHER TODAY, TONIGHT AND SUNDAY
MORNING. MODERATE CONFIDENCE ON SHOWER AND THUNDERSTORM CHANCES
SUNDAY NIGHT, MONDAY NIGHT AND TUESDAY.
AVIATION
LAST UPDATE: 0630Z.
FLIGHT CAT RANGE: A MIX OF VFR, MVFR, AND IFR THIS MORNING. VFR
THIS AFTERNOON AND TONIGHT.
DISCUSSION: LOW CLOUDS IN THE EAST WILL PRODUCE A MIX OF MVFR AND
IFR CEILINGS THIS MORNING. PATCHY FOG IS EXPECTED THIS MORNING
WITH REDUCED VISIBILITY AT TIMES. OTHERWISE, A MIX OF CLEAR SKIES
AND MID LEVEL CLOUDS ARE EXPECTED TODAY WITH THE CLOUDS GRADUALLY
CLEARING. LOOK FOR A MIX OF CLEAR SKIES AND HIGH CLOUDS TONIGHT.
WIND: LIGHT AND VARIABLE WINDS THIS MORNING WILL BECOME NORTH TO
NW 5 TO 10 KNOTS THIS AFTERNOON AND LIGHT AND VARIABLE TONIGHT.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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