725
FXUS65 KGGW 240851
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
251 AM MDT Tue Sep 24 2024

.DISCUSSION...
KEY MESSAGES:

  - A warm up to the 80s/low 90s for Wednesday then stepping
    cooler through the weekend.

 - Dry conditions are expected despite a couple cool fronts.


WEATHER PATTERN OVERVIEW:

Progressive upper ridge will move into the Northern Rockies
Tuesday, then into the northern Plains Wednesday. This will bring
a warm airmass northward to enable 80s and low 90 degree
temperatures across the CWA. Being that the area received some
rainfall in the past week, and very little wind is expected, fire
weather concerns are minimal at this point.

Upper ridge will be suppressed by a couple shortwaves and weak
cold fronts then move through the region. The first of these waves
will slide through on Thursday with a drop in temperatures.

Temperatures will continue with a general downward trend through
the weekend with zonal to slightly cyclonic flow over the northern
Rockies. Rain chances also look minimal late in the period with an
unfavorable pattern for bringing moisture across the mountains.

FORECAST CONFIDENCE & DEVIATIONS:

Temperature spread increases for late in the week with
uncertainty regarding positioning of west coast trough and track
of shortwaves ejecting from said trough. The high model
uncertainty is resulting in around a 10 degree range from the
25th to 75th percentiles.



&&

.AVIATION...
VFR. Mid to high level clouds across the region this morning will
exit to the east for clear skies by afternoon. Mostly clear skies
are expected through Wednesday.

&&

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

$$

weather.gov/glasgow