653
FXUS65 KGGW 132003
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
203 PM MDT Mon Oct 13 2025

.DISCUSSION...

KEY MESSAGES:
- Cool and dry conditions are expected through Tuesday.

- Next chance for significant rainfall looks to be Wednesday
  through early Friday.

- A brief warm up looks possible this weekend as a ridge moves
  across the area.

WEATHER PATTERN OVERVIEW:
Lingering low clouds today have moderated temperatures to the 30s
for most with little change tonight. Tuesday will be notably
warmer with partial clearing and departing trough making more
seasonable 50s common in the afternoon. Overnight wind gusts with
this transition tonight into Tuesday morning will be just enough
to warrant a Lake Wind Advisory for some easterly 30-40 mph
gusts.

Wetter conditions look to return to the area again Wednesday
through Friday morning as another trough forming over California
begins to lift Pacific moisture and shortwave lift zones across
the region around that time frame. There is increasing consensus
among ensembles for at least a quarter to half inch for rain
totals across the area.

Afterward, there is general agreement in a brief warming/drying
pattern with an upper ridge over the weekend which would raise
daytime highs into 60s on Sunday.

FORECAST CONFIDENCE & DEVIATIONS:
Deviations through Tuesday afternoon were focused on the sky
conditions and winds, blending with short term guidance and NBM
90th percentile. Confidence is increasing for timing of
precipitation beginning Wednesday and moving out of the area
Friday. Confidence in exact amounts of precipitation Wednesday to
Friday is still low to medium.


&&

.AVIATION...

FLIGHT CAT RANGE: MVFR - VFR

DISCUSSION: MVFR ceilings are lifting slowly with partial clearing
arriving for KGDV and KSDY this afternoon. Broken ceilings likely
stay tonight for KOLF and KGGW, but improve to VFR most of the
time starting this evening. Winds increase out of the east to 10
to 20 kts with gusts up to 30 kts tonight.


&&

.GGW WATCHES/WARNINGS/ADVISORIES...
Lake Wind Advisory from 8 PM this evening to noon MDT Tuesday
for Central and Southeast Phillips-Central and Southern Valley-
Garfield-McCone-Petroleum.

&&

$$

weather.gov/glasgow