528
FXUS65 KGGW 070814
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
214 AM MDT SUN JUN 7 2026
KEY MESSAGES
- ANOTHER COLD FRONT TODAY WILL BRING ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS. CREATE A WIDE RANGE IN TEMPERATURES
FOR HIGHS TODAY.
- STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE IN THE EAST THIS
AFTERNOON AND THIS EVENING.
- MONDAY WILL BE DRY BEFORE AN UPPER TROUGH BRING COOL AND WET
WEATHER FOR MID WEEK.
DISCUSSION
WEATHER PATTERN OVERVIEW:
UPPER LOW OVER THE PACIFIC NORTHWEST THIS MORNING WILL MOVE
THROUGH THE NORTHERN ROCKIES TODAY. A BROADER TROUGH WILL REMAIN
OVER NORTHWEST STATES THROUGH MIDWEEK WITH ANOTHER WAVE LIFTING
THROUGH THE REGION. TOWARD THE END OF THE WEEK, AN UPPER RIDGE
BEGINS BUILDING OFF THE WEST COAST, BUT EFFECTS OF THE BROAD
TROUGH WILL LINGER AS IT MOVES TOWARD THE GREAT LAKES.
AN UPPER WAVE LIFTS THROUGH THE AREA THIS AFTERNOON AND TONIGHT
WITH A SECONDARY COLD FRONT MOVING ACROSS THE AREA DURING THE DAY.
LINGERING INSTABILITY WILL BRING CHANCES FOR SHOWERS AND
THUNDERSTORMS WITH SEVERE STORMS POSSIBLE AGAIN MAINLY NEAR THE
NORTH DAKOTA BORDER WHERE TEMPERATURES WILL BE MUCH WARMER THAN IN
THE WEST. WINDS INCREASE BEHIND THE FRONT, AND IN COMBINATION
WITH POSSIBLE THUNDERSTORM GUSTS, WILL KEEP A LAKE WIND ADVISORY
IN EFFECT FOR FORT PECK LAKE FROM 3 PM TO 9 PM TODAY.
SHORTWAVE RIDGE IN SW FLOW ALOFT WILL ALLOW FOR DRY WEATHER ON
MONDAY. THEN, A BROAD UPPER TROUGH MOVES INTO MONTANA ON TUESDAY
AND REMAINS OVER THE AREA ON WEDNESDAY WITH COOL AND WET WEATHER.
WHILE THE TROUGH MOVES TO THE EAST ON THURSDAY, AN UNSTABLE NW
FLOW ALOFT WILL KEEP COOL WET WEATHER GOING OVER THE AREA. CHANCES
FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE AT TIMES FRIDAY AND
SATURDAY WITH AN UNSTABLE NW FLOW ALOFT.
FORECAST CONFIDENCE & DEVIATIONS:
HIGH CONFIDENCE IN THE GUSTY NW WINDS THIS AFTERNOON AND EVENING.
HIGH CONFIDENCE THAT SHOWERS AND THUNDERSTORMS WILL OCCUR AT TIMES TODAY
AND THIS EVENING BUT LOW CONFIDENCE IN LOCATION AND TIMING OF
SPECIFIC STORMS. NO CHANGES FROM THE NBM AT THIS TIMES.
AVIATION
FLIGHT CAT RANGE: VFR WITH AREAS OF MVFR TODAY. VFR TONIGHT.
DISCUSSION: THERE WILL BE LOW AND MID LEVEL CLOUDS WITH BREAKS
TODAY ACROSS NORTHEAST MONTANA. THE LOW CLOUDS WILL REDUCE CIGS TO
MVFR LEVELS AT TIMES TODAY. THERE WILL ALSO BE ISOLATED TO
SCATTERED SHOWERS AND THUNDERSTORMS AT TIMES TODAY AND THIS
EVENING. SKIES WILL CLEAR FROM WEST TO EAST ACROSS THE REGION
TONIGHT.
WINDS: MAINLY NORTH 5 TO 15 KNOTS THIS MORNING BECOMING NW AROUND
MIDDAY (18Z). NW WINDS WILL INCREASE TO 15 TO 25 KNOTS THIS
AFTERNOON AND CONTINUE THIS EVENING BEFORE DIMINISHING LATE
TONIGHT AND BECOMING WEST TO SW 5 TO 10 KNOTS.
GGW WATCHES/WARNINGS/ADVISORIES
LAKE WIND ADVISORY FROM 3 PM THIS AFTERNOON TO 9 PM MDT THIS
EVENING FOR CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN
VALLEY-GARFIELD-MCCONE-PETROLEUM.
WEATHER.GOV/GLASGOW
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