Plentywood, Montana Weather Forecast Discussion

706
FXUS65 KGGW 072057
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
257 PM MDT Sun Sep 7 2025
.DISCUSSION...
KEY MESSAGES:
- Summer-like conditions return with some scattered thunderstorms
  approaching through south-central Montana this afternoon and
  evening.
- A pattern change will bring multiple rounds of showers and
  thunderstorms to northeast Montana later this week.
WEATHER PATTERN OVERVIEW:
Even with a warm ridge of high pressure over eastern Montana, the
approaching low pressure system on the US west coast has already
begun to turn the flow pattern above Montana a bit more from the
west and southwest and pushed through a few subtle short-wave
disturbances. This has set off some scattered thunderstorms over
central and south-central Montana. Some of this activity may reach
into our Petroleum and SW Phillips Counties, but the overall
storminess in expected to wane after sunset.
Tonight through Monday morning some subtle and lingering effects
from the embedded short-wave disturbances may lead to a few virga
showers or sprinkles of little to no consequence for a few
locations.
Monday afternoon through Tuesday is expected to be a stronger
ridge of high pressure for more dry and warm conditions.
Confidence is beginning to increase in a more active weather
pattern later this week as the approaching low pressure system
moves more over Montana. Expect widespread chances for showers
and thunderstorms and decent rainfall accumulations.
FORECAST CONFIDENCE & DEVIATIONS:
Deviated from the NBM with more detailed hi-resolution model data
for precip chances and winds for Days 1-2.
For later this week, high confidence in a wet and more active
weather pattern for us locally, but average to below-average
confidence for exact timing and amounts of rainfall.
&&
.AVIATION...
UPDATED: 2053Z, 9/7
FLIGHT CATEGORY: VFR
DISCUSSION: High pressure remains in control over NE MT although
subtle short-wave disturbances ahead of an approaching low
pressure system are setting of some scattered thunderstorms which
will remain far west of our TAF sites.
EQUIPMENT: KSDY AWOS broadcast system is currently out for METARS
and amendments will not be scheduled. (AMD NOT SKED)
WINDS: Generally light and variable, then setting up from the NW
Monday afternoon around 10 to 15 kts.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion