Antelope, Montana Weather Forecast Discussion

733
FXUS65 KGGW 291919
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
119 PM MDT Mon Sep 29 2025
.DISCUSSION...
KEY MESSAGES:
- Warm temperatures and dry weather are largely expected through
  tomorrow, and then a cool down is expected through early next
  week.
- As the ridge breaks down, chances for precipitation begin by
  tomorrow night into the second half of the week.
WEATHER PATTERN OVERVIEW:
The upper ridge will remain over the northern plains through
tomorrow. Precipitation opportunities will start tomorrow evening
with a few general thunderstorms. Temperatures will slowly trend
downward this week as a trough from the southwest moves in
followed by a trough coming in from the northwest this weekend.
On Wednesday afternoon and Thursday night, a few weak shortwave
troughs will lift across the region, pushing a cold front and the
possibility of showers through eastern Montana. There remains
high uncertainty in the details of precipitation opportunities
beyond Friday.
FORECAST CONFIDENCE & DEVIATIONS:
Used a mix of NBM and NBM90 to increase winds through tomorrow
afternoon. No other deviations.
There is high confidence of a cooling trend beginning Wednesday
and going through early next week. There is moderate confidence
of precipitation occurring tomorrow afternoon, Wednesday
afternoon, and Thursday evening. There is low confidence of
precipitation amounts with each system.
&&
.AVIATION...
Update Time: 2000Z
Synopsis: VFR. Skies will remain clear to partly cloudy today
into tonight with the upper ridge in place. Any wildfire smoke in
the area is not expected to reduce visibility.
Winds: Generally east at 6 to 19 knots, becoming south southwest
after 18Z Tuesday.
EQUIPMENT: KSDY AMD NOT SKED will remain in place until the METARs
comms issue is repaired.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion