277
FXUS65 KGGW 042237
AFDGGW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
437 PM MDT SUN OCT 4 2026
KEY MESSAGES
- FAIR CONDITIONS ARE EXPECTED TO PERSIST THROUGH THIS WEEK.
- COOLER TEMPERATURES AND LOW CHANCES FOR PRECIPITATION ARE
EXPECTED THIS WEEKEND.
DISCUSSION
AN UPPER-LEVEL RIDGE OVER THE WESTERN US WILL REMAIN OVERHEAD
THROUGH THURSDAY. FAIR CONDITIONS ARE EXPECTED TO PERSIST.
AN UPPER-LEVEL TROUGH IS EXPECTED TO DIG OVER MONTANA SOMETIME
BETWEEN FRIDAY AND SATURDAY. TIMING OF THE TROUGH BETWEEN THE GFS
AND ECMWF IS INCONSISTENT, BUT INCREASED CLOUD COVERAGE, COOLER
TEMPERATURES, AND POSSIBLE PRECIPITATION ARE EXPECTED THIS
WEEKEND.
FORECAST CONFIDENCE & DEVIATIONS:
- NO CHANGES WERE MADE FROM THE NBM.
- THERE IS LOW CONFIDENCE IN PRECIPITATION CHANCES THIS WEEKEND.
DON
AVIATION
LAST UPDATED: 2230Z
FLIGHT CAT RANGE: VFR
LLWS: THERE IS A SMALL CHANCE (10-30%) OF LOW LEVEL WIND SHEAR AT
KOLF MONDAY MORNING FROM 05-13Z AS A LOW LEVEL JET KICKS IN. THIS
IS TOO LOW TO INCLUDE IN THE TAFS DIRECTLY.
DISCUSSION: SKC TO FEW MID-TO-HIGH LEVEL CLOUDS OVER THE NEXT
24-HOUR PERIOD.
WINDS: SE AT 08 TO 12 KT WITH GUSTS TO 12 KNOTS AT KGGW AND KSDY,
VEERING SW AND DECREASING TO 05 TO 10 KT BY MONDAY MORNING.
INTERMINTENT PERIODS OF LIGHT AND VARIABLE WINDS ARE LIKELY
MONDAY NIGHT.
/GAH
GGW WATCHES/WARNINGS/ADVISORIES
NONE.
WEATHER.GOV/GLASGOW
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