632
FXUS65 KGGW 081900
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
100 PM MDT Fri Aug 8 2025

.DISCUSSION...

KEY MESSAGES:

- The cooler and breezy conditions with scattered showers and
  thunderstorms will continue through Saturday

- A gradual shift to drier and warmer conditions by next week

WEATHER PATTERN OVERVIEW:

An upper low moving over the region through the weekend will
bring waves of showers and thunderstorms through northeast
Montana, mostly north of the Missouri River through tomorrow.
Persistent gusty winds will continue and thus will keep the Lake
Wind Advisory continuing through Saturday evening.

By early next week, temperatures will start to warm with a more
stable pattern favoring drier conditions more typical of August.
However, ensembles show some signs of another upper low moving
through the region later next week. This system doesn`t appear to
be as strong as the current one but confidence and details should
improve next week.

FORECAST CONFIDENCE & DEVIATIONS:

The base forecast was mostly followed, aside from slightly
increasing winds through Saturday due to the strengthening westerly
flow and focused more on short term model guidance. Confidence is
high for the Lake Wind Advisory and limited strong thunderstorm
threat through Saturday, then medium for the extent of a pattern
change next week.


&&

.AVIATION...

FLIGHT CAT RANGE: Mainly VFR then becoming MVFR tonight/Saturday.

DISCUSSION: Gusty Northwest winds up to 40 mph will continue
through Saturday. Severe thunderstorms are not expected but
occasional showers and isolated thunderstorms will continue for
mainly KGGW, KOLF and KSDY.

Improvements are expected starting Saturday night with lighter
winds and gradual clearing. TFJ

&&

.GGW WATCHES/WARNINGS/ADVISORIES...
Lake Wind Advisory until 9 PM MDT Saturday for Central and
Southeast Phillips-Central and Southern Valley-Garfield-McCone-
Petroleum.

&&

$$

weather.gov/glasgow