textproduct: Glasgow

KEY MESSAGES

- Scattered rain showers and chances for isolated thunderstorms this afternoon.

- Much warmer and drier to end the week.

- Unsettled weather pattern over the weekend with renewed chances for showers.

DISCUSSION

WEATHER PATTERN OVERVIEW: The upper level trough remains over western Montana and a surface high pressure system is trying to push south into the area. The surface high is expected to push just far enough northward to bring isolated showers and thunderstorms for a few locations, especially in the western half of the area.

The overall trough is expected to remain over the area through Thursday with a chance for precipitation in central Montana on tomorrow. After Friday there is very little model agreement on the placement of troughing in the SW, which will determine how a possible Pacific shortwave (and moisture) and subsequent influx of colder, Canadian air will impact NE MT.

FORECAST CONFIDENCE & DEVIATIONS: Increased PoPs in SW zones for afternoon showery conditions. Raised winds and wind gusts with NBM90.

Moderate confidence in thunderstorms occuring, but low confidence in exact timing or location. Gusty but not severe winds are possible following storms in the early evening.

AVIATION

LAST UPDATED: 0630Z

FLIGHT CAT RANGE: VFR

DISCUSSION: Rain showers and isolated thunderstorms are possible in the afternoon. Brief MVFR conditions will be possible with these storms.

WIND: SE at 5 to 10 knots becoming WNW after 21Z. Light and variable winds after 6Z tonight.

GGW WATCHES/WARNINGS/ADVISORIES

None.