334
FXUS65 KGGW 111015
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
415 AM MDT Sat Oct 11 2025

.DISCUSSION...
KEY MESSAGES:

- Widespread rain looks to push through NE Montana from tonight
  into Sunday evening with up to an inch of rain expected.

- Falling temperatures and strong winds expected with the frontal
  system on Sunday.

WEATHER PATTERN OVERVIEW:
A Pacific Northwest trough will deepen late this weekend and push
a cold front through the region.

Ensembles continue to show a steady band of rain moving through NE
Montana tonight and Sunday with up to an inch of accumulation
possible. A sharp drop in temperatures behind the front will
result in precipitation potentially ending as wet snow along the
Canadian border and higher elevations. Strong cold air advection
supports gusty winds on Sunday as well with the stratiform rain.

Ensembles show broad upper trough pattern persisting over central
Canada much of next week, leading to cool and unsettled conditions
at times for those in NE Montana.

FORECAST CONFIDENCE & DEVIATIONS:
NBM and NBM90 were used for short term winds given the Lake Wind
concerns for Sunday. Otherwise, NBM handled expected outcomes
well. Confidence remains high on a cooler and wet weekend but more
moderate on precipitation amounts and precipitation type due to
run to run model variability and questions surrounding how much
precipitation lingers as colder temperatures enter the scene.

&&

.AVIATION...
VFR with clear to partly cloudy skies are expected through most of
today. As a frontal system moves into the region tonight, cloud
cover will increase and lower, with MVFR conditions expected with
rain late tonight.


&&

.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

weather.gov/glasgow