371
FXUS65 KGGW 081842
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1242 PM MDT MON JUN 8 2026
KEY MESSAGES
- THERE IS A CHANCE FOR ISOLATED STRONG THUNDERSTORMS TO EMERGE
EARLY ON TUESDAY, AND THEN AGAIN IN THE AFTERNOON. THERE IS A
LOW CHANCE FOR SEVERE WEATHER IN THE FAR NORTHEAST.
- SEASONABLY COOL TEMPERATURES AND SEVERAL CHANCES FOR SHOWERS AND
THUNDERSTORMS WILL CONTINUE THROUGH THE END OF THE WORK WEEK.
- STRONG WEST WINDS TUESDAY AFTERNOON INTO WEDNESDAY EVENING HAVE
HELPED BRING ABOUT A LAKE WIND ADVISORY FOR FORT PECK LAKE.
DISCUSSION
WEATHER PATTERN OVERVIEW:
AFTER AN UPPER LEVEL SHORTWAVE RIDGE MOVES OUT TONIGHT, AN UPPER
TROUGH IS EXPECTED TO BE OVERHEAD FROM MONDAY THROUGH THE END OF
THE WEEK. THIS WILL KEEP THE PATTERN ACTIVE FOR WINDS, SHOWERS,
AND SCATTERED THUNDERSTORMS THROUGH THE END OF THE WORK WEEK. A
LAKE WIND ADVISORY IS IN EFFECT FOR TUESDAY AFTERNOON THROUGH
WEDNESDAY. THERE WILL LIKELY BE AN EXTENSION ON THIS PRODUCT TO GO
THROUGH THURSDAY EVENING ON AN UPCOMING FORECAST UPDATE. A LOW
LEVEL JET IS EXPECTED TO KICK IN TONIGHT, SO THIS WILL AID IN SOME
LOW LEVEL MOISTURE SNEAKING ITS WAY UP INTO THE EASTERN PART OF
THE AREA TONIGHT. THEN A PASSING TROUGH WILL AID IN ENOUGH LIFT TO
GENERATE SOME SCATTERED THUNDERSTORMS IN THE SOUTH AND FAR
NORTHEAST IN THE AFTERNOON. ISOLATED STRONG TO SEVERE STORMS ARE
PART OF THE STORY IN THE NORTHEAST AFTER 2 PM TUESDAY, AND ANY
STORMS THAT FORM WILL QUICKLY MOVE INTO NORTH DAKOTA.
FOR WEDNESDAY, THE SYNOPTIC TROUGH WILL BRING MOSTLY RAIN SHOWERS
AND WEAK THUNDERSTORMS. THESE CONDITIONS AIDED BY STRONG WINDS WILL
BRING A CHANCE FOR GUSTS ABOVE 50 MPH IN THE AFTERNOON. THESE
CONDITIONS ARE EXPECTED AGAIN ON THURSDAY. THE ACTIVE PATTERN
CONTINUES ON FRIDAY, WITH SHOWERS AND STORM CHANCES BEING A BIT
LOWER THAN THE PREVIOUS TWO DAYS. IN ADDITION, THE UPPER TROUGH
PATTERN WILL MOST LIKELY MAINTAIN SEASONABLY COOL TEMPERATURES.
FORECAST CONFIDENCE & DEVIATIONS:
THE ONLY DEVIATION WAS TO THE POPS THROUGH 1 AM WEDNESDAY TO
INCREASE THEM AND EXPAND THEM A BIT, MAINLY FOR TUESDAY MORNING.
THERE IS HIGH CONFIDENCE IN ISOLATED TO SCATTERED SHOWERS AND
STORMS OCCURRING EACH DAY THROUGH FRIDAY.
THERE IS HIGH CONFIDENCE IN THE LAKE WIND ADVISORY FOR TUESDAY
AFTERNOON INTO WEDNESDAY, AND IN AN EXTENSION OF THIS PRODUCT
HAPPENING THROUGH THURSDAY EVENING EVENTUALLY.
THERE IS LOW TO MODERATE CONFIDENCE OF A WETTING RAIN OCCURRING
FOR VARIOUS PARTS OF THE AREA THROUGH WEDNESDAY EVENING.
THERE IS MODERATE CONFIDENCE OF ISOLATED GUSTS OVER 50 MPH
OCCURRING ON WEDNESDAY, AND LOW CONFIDENCE ON THURSDAY.
THERE IS HIGH CONFIDENCE THE UPPER TROUGH WILL REMAIN OVER THE
AREA THROUGH AT LEAST THE END OF THE WORK WEEK.
AVIATION
LAST UPDATED: MONDAY JUNE 8, 2026 AT 18:45Z.
FLIGHT CAT RANGE: VFR. LOW PROBABILITY OF MVFR FROM 06Z TO 14Z.
DISCUSSION: DRY WEATHER AND MOSTLY SUNNY SKIES ARE EXPECTED WITH A
SHORTWAVE RIDGE OVER THE AREA TODAY. A DEVELOPING LOW PRESSURE
SYSTEM WILL ALLOW FOR SOME ISOLATED SHOWERS AND THUNDERSTORMS TO
MOVE THROUGH FROM 06Z TO 14Z TUESDAY. A PASSING TROUGH WILL AID IN
SOME ISOLATED TO SCATTERED STORMS IN THE AFTERNOON AS WELL. THERE
IS LOW TO MODERATE CONFIDENCE OF MVFR CONDITIONS OCCURRING IN
THUNDERSTORMS. OTHER THAN THAT, VFR CONDITIONS ARE EXPECTED.
WINDS: SOUTHWEST AT 10 TO 20 KNOTS, BECOMING LIGHT AND VARIABLE
AFTER 01Z, BECOMING SOUTHEAST AT 7 TO 18 KNOTS AFTER 06Z, BECOMING
WEST AT 11 TO 22 KNOTS AFTER 19Z.
LLWS: SOUTH SOUTHEAST AT 35 TO 45 KNOTS FROM 08Z TO 14Z.
GGW WATCHES/WARNINGS/ADVISORIES
LAKE WIND ADVISORY FROM 2 PM TUESDAY TO 6 PM MDT WEDNESDAY FOR
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
GARFIELD-MCCONE-PETROLEUM.
WEATHER.GOV/GLASGOW
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