394
FXUS65 KGGW 251912
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
112 PM MDT MON AUG 25 2025
DISCUSSION
KEY MESSAGES:
- DRY CONDITIONS WITH THE WARM-UP TO CONTINUE INTO WEDNESDAY.
- MONSOONAL MOISTURE WILL DRIFT INTO NE MONTANA ON EITHER THURSDAY
OR FRIDAY WITH CHANCES FOR SHOWERS AND THUNDERSTORMS INTO THE
WEEKEND.
WEATHER PATTERN OVERVIEW:
NORTHEAST MONTANA REMAINS IN THE NORTHWEST FLOW WITH AN UPPER
RIDGE TO OUR WEST AND A TROUGH TO OUR EAST. THE UPPER RIDGE WILL
DRIFT EAST THIS WEEK WITH TEMPS WARMING INTO WEDNESDAY.
THE UPPER RIDGE ALSO CONTAINS LOTS OF MONSOONAL MOISTURE AND WILL
START DRIFTING OUR WAY THIS WEEK. AN UPPER LOW OFF THE PACIFIC NW
COAST WILL NUDGE THIS INTO MONTANA, SPECIFICALLY INTO NE MONTANA
THURSDAY EVENING THROUGH SATURDAY. PRECIPITABLE WATERS WILL RISE
SO THUNDERSTORMS WITH BRIEF HEAVY RAIN AND GUSTY WINDS CAN BE
EXPECTED, HOWEVER THE STRONGEST STORMS LOOK TO BE SOUTH OF THE
CWA.
IN THE MEANTIME, EXPECT MAINLY CLEAR SKIES IN ALL AREAS THROUGH
TUESDAY. THEN, THERE WILL BE A GRADUAL INCREASE IN MID AND HIGH
CLOUDS MAINLY IN THE SW STARTING TUESDAY NIGHT WHICH WILL SPREAD
TO THE NE WEDNESDAY NIGHT. IT LOOKS LIKE IT WILL TAKE UNTIL
THURSDAY NIGHT FOR THE MONSOONAL MOISTURE TO MOISTEN THE
ATMOSPHERE ENOUGH FOR THE CHANCES FOR SHOWERS AND THUNDERSTORMS TO
BEGIN OVER THE FORECAST AREA.
CLOUDS AND THE SCATTERED SHOWERS WILL COOL TEMPERATURES SLIGHTLY
FRIDAY. TEMPERATURES MAY WARM A BIT ON SUNDAY AS THE SYSTEM EXITS
TO OUR EAST.
FORECAST CONFIDENCE & DEVIATIONS:
INCREASED WINDS, BLENDING THEM WITH NBM90 THROUGH TUESDAY. NO
OTHER CHANGES WERE MADE FROM NBM. TFJ
AVIATION
UPDATED: 1915Z
FLIGHT CAT: VFR.
DISCUSSION: QUIET WEATHER WITH MAINLY CLEAR SKIES TO CONTINUE
THROUGH TUESDAY.
WINDS: EAST TO SE 5 TO 15 KNOTS TONIGHT (STRONGEST AT KGGW). SE 5
TO 15 TUESDAY. TFJ
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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