203
FXUS65 KGGW 190817
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
217 AM MDT Wed Mar 19 2025

.DISCUSSION...

KEY MESSAGES:
1) A series of Pacific troughs will bring weak chances for light
rain/snow with windy periods Thursday night, Saturday, and
possibly Sunday night.

2) Temperatures near to slightly above average are expected
through the weekend.


WEATHER PATTERN OVERVIEW:
Progressive pacific troughs will move across the region into the
weekend.

A temporary ridge moves through Wednesday and Thursday. Look for
temps to rebound to above normal levels and dry conditions.

Late Thursday, clouds increase as the next cold front and upper
trough moves in with chances for mainly rain Thursday night. GUsty
winds may pick up behind the front for about 12-24 hours.

A break from unsettled conditions is expected on Friday before a
system from Alberta drops in Saturday. This small but impactful
system will bring a chance of mainly rain, possibly ending as some
snow Saturday night. Expect this system to also bring strong NW
winds that will make Saturday night feel quite cool.

Then NW flow ensues with a fast moving system impacting the area
Sunday night.

A building upper ridge then moves in next week with warmer and
drier conditions expected.


FORECAST CONFIDENCE & DEVIATIONS:
One deviation early this morning. Used a 50/50 blend of NBM/NBM90
for the next 4 to 6 hours for Sky in order to account for overcast
low stratus moving through the region that regular NBM washed out
pretty bad.

Most of these light events will be focused on weakly forced
mesoscale features embedded in the larger scale. So, placement and
timing will be difficult and could easily shift by a county or up
to 6 hours. Therefore, confidence is low in these features and
timings. GAH/TFJ



&&

.AVIATION...
LAST UPDATE: 0700Z

FLIGHT CAT RANGE: VFR to MVFR.

DISCUSSION: MVFR ceilings will drift across the airports this
morning. Clearing is expected to start from northwest around 09Z
and end in the southeast around 15Z leaving VFR through the rest
of the cycle.

WIND: N to NW to W at 10 kts or less this morning. Becoming W at
5 to 15 kts this afternoon. Then backing to the SW and reducing to
10 kts or less this evening. GAH


&&

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


&&

$$

weather.gov/glasgow