894
FXUS65 KGGW 130646
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1246 AM MDT SAT JUN 13 2026
KEY MESSAGES
- COOL AND BREEZY CONDITIONS ARE EXPECTED FOR SATURDAY WITH A FEW
SHOWERS ACROSS THE AREA.
- TEMPERATURES LOOK TO REBOUND FOR SUNDAY AND MONDAY WITH DRY
WEATHER CONDITIONS.
- A COLD FRONT IS EXPECTED ON TUESDAY WITH THE NEXT ROUND OF
AFTERNOON AND EVENING THUNDERSTORMS.
DISCUSSION
WEATHER PATTERN OVERVIEW:
AN UPPER LEVEL LOW OVER CENTRAL CANADA WITH APPENDING TROUGH
EXTENDING THROUGH EASTERN MONTANA WILL KEEP COOL CONDITIONS OVER
THE REGION TODAY, AND MAY PROVIDE ENOUGH FORCING FOR ASCENT FOR
ISOLATED SHOWERS AROUND MID DAY.
FOR SUNDAY AND MONDAY, THAT TROUGH WILL PUSH DOWNSTREAM, REPLACED
BY NORTHWEST UPPER FLOW AHEAD OF A PACIFIC RIDGE. THIS WILL ALLOW
OVERALL DRIER WEATHER CONDITIONS AND A RECOVERY IN TEMPERATURES.
BY MONDAY, HIGHS FOR MOST OF NE MONTANA WILL BE WELL INTO THE 70S
TO NEAR 80 DEGREES, OR BACK TO SEASONABLE LEVELS FOR THIS TIME OF
YEAR.
THE NEXT UPPER LEVEL SHORTWAVE AND SURFACE COLD FRONT IS SET TO
ARRIVE ON TUESDAY WITH AFTERNOON AND EVENING SHOWERS AND
THUNDERSTORMS LIKELY, ALONG WITH WETTING RAINS. ENSEMBLES CONTINUE
TO SHOW COOL AND UNSETTLED WEATHER CONTINUING IN THE MIDDLE OF THE
WEEK WITH A MODEST WARMUP BY THE WEEKEND AS UPPER RIDGING
TRANSLATES EAST FROM THE PACIFIC SHORE.
FORECAST CONFIDENCE & DEVIATIONS:
NBM WAS UTILIZED FOR THIS CYCLE SAVE FOR MINOR ADJUSTMENTS FOR
CONSISTENCY. THERE IS DECENT ENSEMBLE AGREEMENT ON THE HANDLING
OF THE MAIN FOCUS FOR THIS UPCOMING FORECAST, THE SHORTWAVE AND
FRONTAL PASSAGE TUESDAY AND ASSOCIATED THUNDERSTORM CHANCES. THERE
EXISTS ABOVE AVERAGE CONFIDENCE THROUGH THIS PERIOD OVERALL. THE
ONLY ADDITION WILL BE TO INCLUDE SOME MESOSCALE DETAIL AS THIS
ENTERS THE SHORT TERM SCENE.
AVIATION
UPDATED: SATURDAY JUNE 12, 2026 AT 0630Z
FLIGHT CAT RANGE: VFR.
DISCUSSION: CLOUDS WILL INCREASE FROM THE NORTH TODAY WITH
ISOLATED SHOWERS POSSIBLE, ESPECIALLY MID MORNING TO EARLY
AFTERNOON HOURS, 16-20Z.
WINDS: NORTHWEST WINDS WILL RANGE 10 TO 15 KTS TODAY, WITH
OCCASIONAL GUSTS OVER 20 KTS IN THE AFTERNOON.
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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