931
FXUS65 KGGW 231103
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
503 AM MDT Mon Sep 23 2024

.DISCUSSION...
KEY MESSAGES:

 - A few showers this morning with weak cold front passage.

 - Slow warm up to the 80s for highs by mid week.

WEATHER PATTERN OVERVIEW:

Cold front moving through this morning with a few showers moving
across southern Saskatchewan beginning to dip south across the
border. Cold air advection behind the front will keep temperatures
a few degrees cooler than yesterday, and bring a slight increase
of winds.

Upper ridge builds east from the Pacific coast into Montana by
Tuesday for warming temperatures. Reading will top out on
Wednesday by as much as 15 to 20 degrees above season normal.

A series of shortwave troughs will knock down the upper ridge
through the end of the week with a cooling trend expected.

FORECAST CONFIDENCE & DEVIATIONS:

NBM90 keeps wind speeds just below criteria for Lake Wind
Advisory for today although did include in blend for today.

Temperature spread increases for late in the week with uncertainty
regarding positioning of west coast trough and track of shortwaves
ejecting from said trough. These differences will also have an
impact on precipitation chances, although in general the forecast
is expected to be mostly dry.

&&

.AVIATION...
VFR with scattered mid level clouds moving across the region. A
few isolated showers are possible today from early to mid morning.

&&

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

$$

weather.gov/glasgow