FXUS65 KGGW 132014
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
214 PM MDT Mon Apr 13 2026

.KEY MESSAGES...

- Scattered thunderstorms with an isolated strong gusts possible
  through midnight south of HWY 2.

- Below normal temperatures with mixed precipitation and gusty NW
  winds in the afternoon Thursday and Friday.


&&

.DISCUSSION...

WEATHER PATTERN OVERVIEW:
Upper low off the northern California coast will lift through the
Great Basin through the early half of the week. Isolated
thunderstorms could produce some brief gusty winds.

The next upper trough moves from the PCNW into the northern
Rockies on Wednesday and into the Plains through Friday. This
will lead to another round of showers, and with colder air in the
trough, mixed precipitation is possible across much of the region
Wednesday night into Friday morning, particularly for elevated
areas.

Chances for a quarter inch of rain over this time period are
about 20 - 60% across northeast Montana. Chances for 1" of snow
are between 20 - 30% with highest chances along the Canadian
border and over the Little Rockies.

FORECAST CONFIDENCE & DEVIATIONS:
Blended HRRR for day 1 winds, and 33% NBM90 for day 1-2 wind
Gusts. Pushed PoPs out of northern zones earlier and increased
PoT for Prairie, Dawson, Wibaux counties.

HIGH confidence in a tenth of an inch CWA wide Wed night to
Friday. LOW confidence in snow across northern CWA day to Thursday
night to Friday morning.

&&

.AVIATION...
LAST UPDATE: 2000Z

FLIGHT CAT RANGE: VFR - IFR

DISCUSSION: Showers are expected to exit the region after 6Z
tonight. Some isolated lightning is possible at KGDV and KSDY but
remains too limited to place in the TAF directly. IFR ceiling will
lift intermittently through the afternoon before fully lifting
back to MVFR and patchy VFR by 0Z. But, MVFR ceilings will linger
in the east until mid- day Tuesday.

WIND: E winds 5 to 10 kts then becoming light and variable for
all after midnight. A return to gusty west winds for the day on
Tuesday.

&&

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

$$

weather.gov/glasgow