


Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
052 FXUS65 KGGW 061913 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 113 PM MDT Sun Jul 6 2025 .DISCUSSION... KEY MESSAGES: 1) A surface trough will help bring a line of scattered showers and thunderstorms into the evening hours, mainly north of the Missouri River. 2) Hot weather will return Tuesday and Wednesday with highs in the 90s to near 100. 3) Cooler conditions to follow Thursday and Friday. WEATHER PATTERN OVERVIEW: Showers and thunderstorms will move E or SE across the CWA this evening bringing gusty winds with dry air below the cloud bases combined with strong mid-level west winds. Showers will depart late tonight with sunshine expected Monday. An upper disturbance moves to our east Monday allowing an upper ridge to build over the northern Rockies Tuesday and Wednesday. With W or SW flow, temps will get quite a boost with highs in the upper 80s and 90s Tuesday, 90s to low 100s Wednesday. This will dry out the fuels as Minimum humidities drop into the teens across a good portion of the CWA Wednesday. Winds look to be light, but if they were higher, then critical fire weather conditions would be possible. The an upper shortwave trough moves in for a cooldown Thursday and Friday. Strong NW winds are possible Thursday and could make for choppy lake conditions on area lakes. A slight warm-up can be expected next weekend as the trough exits the area. FORECAST CONFIDENCE & DEVIATIONS: There is high confidence of showers and thunderstorms bringing an isolated severe threat north of the Missouri River late this afternoon. There is high confidence of temperatures reaching the 90s to near 100 for many locations by Wednesday. Adjusted pops upward for today into tonight since the NBM was keeping POPs too low for the thunderstorms that are likely to occur later today. Also brought afternoon winds up by utilizing NBM 90 winds. No other changes to the NBM at this time. -Stoinskers/TFJ && .AVIATION... LAST UPDATED: 1915Z FLIGHT CAT RANGE: VFR. DISCUSSION: Scattered showers and thunderstorms will move east across the area this evening becoming more isolated later tonight near KGDV. Strong/gusty winds will accompany these this evening with a gust to 40 kts possible. Look for a quieter day Monday with light W-NW winds. TFJ && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow