Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
978 FXUS65 KGGW 020544 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 1144 PM MDT Thu Oct 1 2026 .KEY MESSAGES... - Seasonable temperatures and mainly dry conditions will prevail through the weekend. - Monday looks to feature markedly warmer temperatures with highs in the 70s and 80s. && .DISCUSSION... Synoptic Setup: A band of reflectivity has shown up overnight across southern tier zones, but is mostly virga as no recent observations have indicated measurable precipitation. Have introduced a band of silent or in some cases slight chance pop into Friday lifting north with a weak warm front. The next shortwave will move in Friday night into Saturday as northwest flow aloft gets established over NE Montana. Look for somewhat cooler weather on Saturday. A stray shower is possible but most should remain dry. Ensembles show upper ridging moving in from the west into early next week. This will lead to warming temperatures and highs in the afternoon returning into the 70s and 80s. The warm up will be short lived however with the next trough approaching for Tuesday with highs a few degrees lower. FORECAST CONFIDENCE & DEVIATIONS: NBM was largely considered for the forecast cycle, though deviations were made in some instances. For one, Friday morning lows were reduced a few degrees in places across northeast zones where the Thursday night drop was running ahead of schedule. Otherwise, pops were also adjusted upward given the radar presentation and weak front. Trends will need to be monitored for additional tweaks, several model guidance solutions such as the NAM Nest and various high resolution models lend support to isolated showers. Little if any QPF is expected to result from these low confidence showers. && .AVIATION... LAST UPDATED: 0514z FLIGHT CAT RANGE: VFR DISCUSSION: Cloud heights are expected to fluctuate throughout the day Friday, but should remain in VFR conditions. Isolated showers are possible mainly over KGDV and KSDY, but confidence remains low. WIND: Surface winds will begin increasing Friday morning out of the southeast, veering to the south during the afternoon and becoming light and variable by Friday night. Some gusty conditions are possible at KGGW but will be more concentrated in KSDY and KGDV. There is a small chance of LLWS Friday morning in the KGDV area. KENZ && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow