791
FXUS65 KGGW 100501
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
1101 PM MDT WED SEP 9 2026
KEY MESSAGES
- HIGH PRESSURE WILL BRING ABOVE SEASONABLE TEMPS AND DRY WEATHER
TODAY. THESE WARM AND DRY CONDITIONS IN THE PRESENCE OF GUSTY
WINDS WILL BRING HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF THE
AREA THIS AFTERNOON AND EVENING.
- A COLD FRONT WILL DRIVE THROUGH THE AREA THIS EVENING WITH
MARKEDLY COOLER TEMPS INTO THE LATE WEEK ALONG WITH ISOLATED TO
WIDELY SCATTERED SHOWERS AND THUNDERSTORMS FRIDAY.
- A STRONGER CHANCE FOR RAIN IS EXPECTED SATURDAY NIGHT THROUGH
SUNDAY MORNING. TOTALS ARE CURRENTLY IN FLUX.
DISCUSSION
TODAY: TEMPS WILL INCREASE AHEAD OF A COLD FRONT WITH HIGHS
PUSHING INTO THE 80S. AFTERNOON AND EVENING HUMIDITY WILL DROP
BELOW 20 PERCENT FOR SOUTHERN AREAS AS WINDS INCREASE TO 10 TO 20
MPH, GUSTING TO 30 MPH IN THE PRESENCE OF DRY FUELS. A RED FLAG
WARNING IN EFFECT FROM NOON UNTIL 8 PM MDT THURSDAY.
TONIGHT THROUGH FRIDAY: A COLD FRONT WILL PUSH THROUGH THE REGION
WITH INCREASING RAIN SHOWERS. WETTING RAINS ARE POSSIBLE(20-50%
CHANCE) WITH THE STEADIER CONVECTION BUT WILL BE FAIRLY HIT-OR-
MISS AND CONFINED TO THE SW OVER PETROLEUM AND PHILLIPS COUNTIES.
SATURDAY: EXPECT A BRIEF PAUSE IN RAIN WITH TEMPS REMAINING WELL
BELOW SEASONAL NORMS.
SUNDAY MORNING THROUGH MONDAY MORNING: TEMPS WILL REMAIN BELOW
NORMAL AS AN OVERUNNING EVENT BEGINS WITH PACIFIC MOISTURE. SW
FLOW WILL TREACK A DISTURBANCE ACROSS THE REGION AND FORMA LOW
PRESSURE CENTER SOMEWHERE AROUND WYOMING WITH THE AREAS NORTH OF
IT RECEIVING THE BULK OF THE PRECIP. CURRENTLY THIS INCLUDES
NORTHEAST MONTANA, BUT IF THIS TRACK MOVES SOUTH ALONG WITH THE
LOW WE COULD QUICKLY BECOME SHUT OUT OF ALL RAIN BEING TO THE
SOUTH AS WELL.
TUESDAY ONWARD COOLD TEMPS REMAIN IN PLACE THROUGH MID-WEEK WHEN A
SIGNAL FOR A RIDGE TO THE WEST BRINGS A CHANCE FOR A CHINOOK TO
WARM US BACK UP TO SEASONAL NORMS SOMETIME AROUND WEDNESDAY TO
FRIDAY.
FORECAST CONFIDENCE & DEVIATIONS:
A MINI DEVIATION TO NBM FOR MINRH WAS PERFORMED ALONG THE
SOUTHERN BORDER TO MATCH UP WITH THE BYZ OFFICE FOR THE RED FLAG
IN PLACE THIS AFTERNOON.
CONFIDENCE IS HIGH FOR DRY AND WINDY CONDITIONS RAISING FIRE
WEATHER CONCERNS ON TODAY.
CONFIDENCE IS LOW FOR TIMING AND PLACEMENT OF SPECIFIC SHOWERS
THROUGH FRIDAY.
AVIATION
LAST UPDATED: 0500Z
FLIGHT CAT RANGE: VFR
DISCUSSION: HIGH PRESSURE WILL LEAD TO MAINLY DRY WEATHER AND
CLEAR SKIES TONIGHT THROUGH THURSDAY AFTERNOON ACROSS AREA
TERMINALS. A COLD FRONT WILL MOVE THROUGH THURSDAY EVENING AND CLOUDS
WILL INCREASE THROUGH THE NIGHT ALONG WITH EVENTUAL SHOWERS BY
EARLY FRIDAY MORNING.
WIND: SW AT 5 TO 10 KTS THROUGH TONIGHT. VEERING WEST AROUND SUN-
UP AND INCREASING TO 10 TO 15 GUST 25 KTS IN THE AFTERNOON.
FURTHER VEERING N BEHIND THE COLD FRONT THURSDAY EVENING AND
DECREASING TO 5 TO 15 KTS OVERNIGHT.
GAH
GGW WATCHES/WARNINGS/ADVISORIES
RED FLAG WARNING FROM NOON TO 8 PM MDT THURSDAY FOR
DAWSON/MCCONE/PRAIRIE/RICHLAND/WIBAUX COUNTIES-SOUTHERN
PETROLEUM AND SOUTHERN GARFIELD COUNTIES.
WEATHER.GOV/GLASGOW
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