Sand Springs, Montana Weather Forecast Discussion

735
FXUS65 KGGW 010749
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
149 AM MDT Wed Oct 1 2025
.DISCUSSION...
KEY MESSAGES:
- A slow cool down is expected through early next week.
- With an upper ridge breaking down, there may be a couple chances
  for precipitation, the first round will exit northeast montana
  this afternoon.
WEATHER PATTERN OVERVIEW:
A large upper low off the Pacific Northwest coast will gradually
move inland but weaken by late in the week.
First round of Precipitation opportunities this morning will exit
the area around early afternoon with a few general showers and
maybe a weak thunderstorm or two., moving northeast across the
CWA by late tonight. Temperatures will slowly trend downward this
week as a trough from the southwest moves in followed by a trough
coming in from the northwest this weekend.
Thursday into Saturday night, a shortwave trough will lift across
the region on Thursday, pushing a stronger cold front and the
possibility of showers through eastern Montana starting Thursday
night. There remains high uncertainty in the details of
precipitation opportunities into Saturday night.
Temperatures look to cool to about normal Saturday, then drop
below normal Sunday and Monday. There is a small chance fora warm
up starting Tuesday but ensembles are so spread out in solutions
that the confidence is low.
FORECAST CONFIDENCE & DEVIATIONS:
Few deviation from NBM to note. Once the PoPs from this morning
rain event got into the range of RAP and HRRR the NBM finally
started to pull in CAMs data and self correct.
There is low confidence of precipitation amounts with each
system from Thursday night into Saturday night.
TFJ/GAH
&&
.AVIATION...
LAST UPDATE: 0830Z
FLIGHT CAT RANGE: VFR
DISCUSSION: Clouds will increase from the southwest with scattered
showers moving through this morning. These are expected to be
light and not bring any flight category drops.
WIND: W at 10 kts or less this morning. Increasing to 5 to 15 kts
this afternoon. Then, light and variable after sundown through
tonight.
EQUIPMENT: At KSDY an AMD NOT SKED will remain in place until the
METARs comms issue is repaired.
GAH
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion