Sand Springs, Montana Weather Forecast Discussion

991
FXUS65 KGGW 242025
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
225 PM MDT Wed Sep 24 2025
.DISCUSSION...
KEY MESSAGES:
- Slightly cooler temperatures tomorrow and Friday before much
  above average temperatures return this weekend
- Fire weather concerns today will increase through the hottest
  part of the afternoon and will return this weekend
- Models are slowly starting to increase agreement on
  precipitation by next week
WEATHER PATTERN OVERVIEW:
A shortwave trough aloft will flatten the ridge enough tonight to
allow a weak cold front through the forecast area with somewhat
cooler temperatures on Friday. Zonal flow over northern Montana
and Canada will keep the region dry and warm. A more active
weather pattern beginning early next week may bring chances for
precipitation to the region by Wednesday. Models are beginning to
suggest the low off the California coast dissipating Sunday,
allowing polar jet to shift southward bringing more seasonable
temperatures and increased moisture.
FORECAST CONFIDENCE & DEVIATIONS:
Increased winds with a mix of the NBM and NBM 90 for Day 1.
Increased Day 2 high temperature with AdjMavBC to better match
with neighbors. There is high confidence a Lake Wind Advisory
will be needed for Thursday night into Friday.
&&
.AVIATION...
UPDATE: 1930Z, September 24
FLIGHT CAT RANGE: VFR
DISCUSSION: Clear skies and windy conditions this afternoon.
WIND: Gusty southwest winds between 10 and 15 kts are expected
this afternoon before calming briefly and shifting north tonight.
Wind gusts of 25 kts will continue near KGDV and KSDY through
22Z.
EQUIPMENT: KSDY AMD NOT SKED will remain in place until METARs
comms issue is repaired.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion