744
FXUS65 KGGW 112016
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
216 PM MDT FRI SEP 11 2026
KEY MESSAGES
- POSSIBLE RAIN ACROSS THE NORTHEAST PORTION OF MONTANA BEGINNING
SUNDAY AFTERNOON AND LASTING OVERNIGHT.
- SUSTAINED WINDS OF 20 MPH WITH POTENTIAL GUSTS TO 40 MPH WILL
LIKELY RESULT IN CONDITIONS REACHING LAKE WIND ADVISORY CRITERIA
SUNDAY AFTERNOON AND MONDAY.
- CHANCES FOR SHOWERS OVERNIGHT TUESDAY AND INTO WEDNESDAY.
DISCUSSION
AN APPROACHING UPPER-LEVEL LOW WILL CONTINUE TRANSPORTING
MOISTURE INTO REGION, PRODUCING CLOUDY SKIES SATURDAY AND
POSSIBLE RAIN ACROSS THE NORTHEAST PORTION OF MONTANA BEGINNING
SUNDAY AFTERNOON AND LASTING OVERNIGHT. PRECIPITATION TOTALS WILL
RANGE BETWEEN 0.01" AND 0.25".
SUSTAINED WINDS OF 20 MPH WITH POTENTIAL GUSTS TO 40 MPH
ASSOCIATED WITH THE PASSAGE OF THE AFOREMENTIONED LOW WILL LIKELY
RESULT IN CONDITIONS REACHING LAKE WIND ADVISORY CRITERIA. ROUGH
CONDITIONS WILL BEGIN LATE SUNDAY AFTERNOON, RELAX OVERNIGHT, AND
RESUME FOR THE DURATION OF MONDAY. WAVE HEIGHTS HAVE THE POTENTIAL
TO REACH 4.5'.
TUESDAY MOVING FORWARD:
A WEAK RIDGING PATTERN WILL TAKE PLACE OVER MONTANA, ALTHOUGH A
BRIEF INFLUX OF MOISTURE WILL POSE CHANCES FOR SHOWERS OVERNIGHT
TUESDAY AND INTO WEDNESDAY. THERE IS UNCERTAINTY ON RAIN AMOUNTS,
BUT EXPECT LESS THAN 0.05" AT ANY GIVEN LOCATION AS OF THE LATEST
FORECAST. BEYOND TUESDAY, SKIES ARE ANTICIPATED TO CLEAR WHILE
TEMPERATURES WARM SLIGHTLY UNDER CONTINUED WEAK RIDGING.
FORECAST CONFIDENCE & DEVIATIONS:
THERE IS MODERATE CONFIDENCE IN RAIN AMOUNTS THROUGH TUESDAY.
THERE IS MODERATE TO HIGH CONFIDENCE OF SUSTAINED WINDS AT OR
ABOVE 20 MPH ON SUNDAY AND MONDAY ACROSS FORT PECK LAKE.
DON
AVIATION
LAST UPDATED: 2000Z
FLIGHT CAT RANGE: VFR
DISCUSSION: ZONAL FLOW WILL TAKE PLACE ALOFT OVER MONTANA AS
COLD FRONT-ASSOCIATED SHOWERS EXIT TO THE EAST THIS AFTERNOON.
EXPECT LOW-LEVEL CEILINGS TO SCATTER OUT AND RISE THROUGH THIS
EVENING AND OVERNIGHT. A BROKEN TO OVERCAST LAYER WILL REDEVELOP
SATURDAY AFTERNOON BETWEEN 6,000' AND 8,000' AGL.
WIND: W-NW AT 10 TO 15 KT WITH GUSTS UP TO 25 KT BECOMING NW AT 08
TO 12 KT WITH GUSTS UP TO 18 KT BY THIS EVENING AND THEN LIGHT
AND VARIABLE BY MORNING.
DON
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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