245
FXUS65 KGGW 021942
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
142 PM MDT Tue Sep 2 2025

.DISCUSSION...

KEY MESSAGES:

- Northerly winds will keep smoke over the area through Wednesday.

- Another cold front expected Thursday with strong winds.

WEATHER PATTERN OVERVIEW:
The first Fall-like airmass will be moving into the area tonight
as a strong upper low is tracking toward the Great Lakes from
central Canada. The northerly flow will keep Canadian smoke over
the area through at least Wednesday.

The coolest air will be to our east, but cooler than normal temps
can be expected beginning Wednesday. A second and stronger
shortwave and front will drop into the region on Thursday. Tighter
pressure gradient with stacked low over southern Manitoba will
bring stronger winds into northeast Montana. The orientation of
the low suggest a mostly dry front, but with cooler temperatures,
fire weather conditions are not yet a concern. This may push most
of the smoke out of the area.

The remainder of the forecast period has high pressure moving out
of the northern Plains by the end of the week, and upper ridge
pushing back across the northern Rockies.

FORECAST CONFIDENCE & DEVIATIONS:
Increased pops for today as the NBM has been undergoing the
precipitation lately. Also blended the NBM90 into the winds for
through Wednesday and with gusts on Thursday.

Rest of forecast went mainly with NBM.

&&

.AVIATION...
UPDATE: 1910z

FLIGHT CONDITIONS: VFR, possible MVFR.

MVFR conditions are possible with visibility (and Slantwise
visibility) reductions as smoke will linger through Wednesday.

WINDS: Northeast at 10-20 kts this evening diminishing by
Wed morning. TFJ

&&

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

$$

weather.gov/glasgow