Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
699 FXUS65 KGGW 242003 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 103 PM MST Sun Nov 24 2024 .DISCUSSION... KEY MESSAGES: - Below average temperatures all week, with some areas seeing below 0 for daily minimums. - Northwesterly flow will bring small disturbances that will produce brief chances of snow with little accumulation expected. WEATHER PATTERN OVERVIEW: Upper level Low that brought snow to areas of the region over the last couple days is moving away, with a cold Canadian air mass now parked over the region. Upper level ridge will begin to build in off the West Coast this week putting our area under a northwest flow aloft. Multiple shortwaves may ride down this flow bringing brief chances of snow to the area on Tuesday, again Wednesday night into Thursday and again on Friday. At the moment these do not look to be big precipitation producers and long term models have been fluctuating quite a bit on timing and placement of the West Coast ridge. So will have to keep monitoring to see if the placement and intensity of these disturbances change as the week progresses. FORECAST CONFIDENCE & DEVIATIONS: Blended forecast and NBM90 for the short term winds. Confidence is high for below to well below average temperatures lasting through the week. Confidence is low on the disturbances riding down the northwest flow aloft. -Bernhart && .AVIATION... LAST UPDATED: 2000Z FLIGHT CAT RANGE: VFR most of the area, MVFR-IFR possible along the Canadian Border. DISCUSSION: Some clouds along the Canadian border could make for lower ceilings, otherwise dry with VFR conditions. WIND: NW 10-15kts, becoming light and variable overnight into Monday morning. -Bernhart && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow