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FXUS65 KGGW 070837
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
237 AM MDT TUE APR 7 2026
KEY MESSAGES
- WARM TEMPERATURES ARE EXPECTED FOR TODAY WITH AFTERNOON HIGHS
IN THE 60S AND LOWER 70S.
- SCATTERED SHOWERS AND ISOLATED THUNDER ARE POSSIBLE THIS
AFTERNOON AND EVENING WITH A COLD FRONT.
- A HIGH WIND WARNING REMAINS IN EFFECT FOR SOUTHWEST PHILLIPS
COUNTY FROM 2 PM TODAY THROUGH 6 PM WEDNESDAY. A NEW LAKE WIND
ADVISORY WILL BE ISSUED FOR FORT PECK LAKE FOR THIS AFTERNOON
THROUGH WEDNESDAY EVENING FOR STRONG NW WINDS.
DISCUSSION
WEATHER PATTERN OVERVIEW:
UPPER RIDGE PASSES THROUGH EASTERN MONTANA TODAY WHICH WILL
WARM TEMPERATURES WITH HIGHS PUSH IN THE 60S AND LOWER 70S.
MEANWHILE, SE WINDS WILL SWITCH TO THE NORTHWEST THIS AFTERNOON AND
INCREASE SIGNIFICANTLY AS A COLD FRONT AND LOW PRESSURE SYSTEM
DRIFT SOUTH THROUGH THE AREA. ENOUGH INSTABILITY LOOKS TO BE
PRESENT FOR A MENTION OF ISOLATED AFTERNOON THUNDER, PARTICULARLY
ACROSS THE SE ZONES, AMID A BROADER AREA OF SCATTERED SHOWERS.
MEANWHILE, THE HIGH WIND WARNING FOR SW PHILIPS COUNTY REMAINS IN
EFFECT FROM 2 PM TODAY THROUGH 6 PM WEDNESDAY. THESE WINDS WILL
ALSO CONTINUE TO PRODUCE ROUGH WAVES ACROSS FORT PECK LAKE. WILL
ISSUE A NEW LAKE WIND ADVISORY THIS AFTERNOON THROUGH WEDNESDAY
FOR THE STRONG NW WINDS BEHIND THE COLD FRONT.
WEDNESDAY AND THURSDAY WILL ALLOW MUCH COLDER TEMPERATURES TO
SETTLE INTO THE REGION, THOUGH WILL MENTION ISOLATED TO WIDELY
SCATTERED POP AT TIMES REFLECTED IN THE NBM GIVEN THE ACTIVE UPPER
NORTHWEST FLOW AS VARIOUS SHORTWAVES TRACK THROUGH TO THE
SOUTHEAST. THESE DISTURBANCES MAY ALLOW FOR LIGHT RAIN AND SNOW
SHOWERS AT TIMES FOR PORTIONS OF NE MONTANA.
UPPER RIDGE BUILDS OVER MONTANA ON FRIDAY WHICH WILL ALLOW WARMER
AIR TO RETURN TO THE FORECAST AREA.
AT LONGER TIME SCALES, ENSEMBLES SHOW AN UPPER LOW OFF THE PACIFIC
SHORE BY THE WEEKEND WITH SOUTHWEST UPPER FLOW OVER EASTERN
MONTANA DEVELOPING. THIS MAY RESULT IN A MILDER AND ACTIVE
PATTERN THAT EMERGES.
FORECAST CONFIDENCE & DEVIATIONS:
NBM WAS BLENDED WITH NBM90 FOR THIS CYCLE FOR THE NEAR TERM WINDS
TO REFLECT CURRENT CONDITIONS AND NEAR TERM EXPECTATIONS.
CONFIDENCE IS HIGH ON BREEZY CONDITIONS THIS AFTERNOON INTO
WEDNESDAY, THOUGH IT IS A BIT MORE MARGINAL ON THE HIGH WIND
THRESHOLD FOR SW PHILLIPS COUNTY.
CONFIDENCE IS ABOVE AVERAGE ON AFTERNOON SHOWERS AND
THUNDERSTORMS, BUT LOW ON SPECIFIC LOCATION AND TIMING.
CONFIDENCE IS LOW ON THE UPCOMING WEEKEND ACTIVE WEATHER PATTERN
GIVEN THE LATER TIME SCALES.
AVIATION
LAST UPDATE: 0800Z, TUESDAY APR 8, 2026
FLIGHT CAT RANGE: VFR
DISCUSSION:
FOLLOWING A WARM DAY ACROSS AREA TERMINALS, CONVECTIVE SHOWERS
AND POSSIBLY EVEN A REMOTE ISOLATED THUNDERSTORM ARE POSSIBLE. THE
BEST TIMING LOOKS TO BE BETWEEN 21Z TODAY AND 03Z WEDNESDAY.
BRIEF MVFR/IFR VISIBILITIES ARE POSSIBLE IF A LONE THUNDERSTORM
TRACKS DIRECTLY OVER A TAF SITE. THERE WILL BE VARYING LEVELS OF
MID AND HIGH CLOUDS OVER THE REGION TODAY AND TONIGHT.
WINDS: SE AT 5 TO 15 KNOTS EARLY THIS MORNING, VEERING SOUTH 10 TO
20 KNOTS DURING THE MORNING AND SW DURING THE EARLY AFTERNOON
BEFORE BECOMING NORTHWEST IN THE LATE AFTERNOON AND TONIGHT AT 20
TO 30 KNOTS, GUSTING TO 35 KNOTS.
GGW WATCHES/WARNINGS/ADVISORIES
LAKE WIND ADVISORY FROM NOON TODAY TO 9 PM MDT WEDNESDAY FOR
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
GARFIELD-MCCONE-PETROLEUM.
HIGH WIND WARNING FROM 2 PM THIS AFTERNOON TO 6 PM MDT WEDNESDAY
FOR SOUTHWEST PHILLIPS.
WEATHER.GOV/GLASGOW
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