Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
083 FXUS65 KGGW 172018 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT Issued by National Weather Service Billings MT 218 PM MDT Tue Jun 17 2025 .DISCUSSION... KEY MESSAGES: - Through the middle of this week, expect generally less active weather for northeast MT with temperatures above normal. - A strong low pressure system from the Pacific coast will favor the return of more widespread strong thunderstorms this weekend. WEATHER PATTERN OVERVIEW: Today through Thursday, an area of weak high pressure will approach from the west, keeping temperatures warmer than normal and limiting precipitation coverage overall. Beginning this weekend, a tightly-wound low pressure system will move through the Pacific Northwest, directing a strong jet streak toward Montana. Other severe weather parameters may combine to support strong to severe thunderstorms. By Sunday, the back side of this strong storm system will wrap around some unusually cold air into northeast Montana. Some higher elevations of central Montana could see some snowfall as a result. FORECAST CONFIDENCE & DEVIATIONS: Temperature forecast is above average. Precipitation forecast is average. Details of timing and amounts of rain showers and/or thunderstorms this weekend in below average, but should increase in a few days. Used a more-reliable blend of hi-res models for the forecast for Days 1-2. Kept NBM for the rest of the forecast. && .AVIATION... PATTERN: Generally a benign flow to support just a few isolated evening rain showers. Impact should be minimal. FLIGHT CONDITION: VFR. WINDS: Light and variable if not calm, then setting up from the west around 10 kts by Wednesday mid-day. && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow