Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
814 FXUS65 KGGW 131038 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 438 AM MDT Tue Aug 13 2024 .DISCUSSION... KEY MESSAGES: - A hot day is expected today before thunderstorms develop and move east across the area late in the day. - Strong thunderstorms are possible this evening. Isolated showers and thunderstorms are possible thereafter. WEATHER PATTERN OVERVIEW: An upper ridge overhead will allow for a hot day across the area today before an upper trough from western Canada moves in and brings an increased chance of thunderstorms late in the day. Better instability looks to occur over the eastern half of the CWA but drier low levels may create stronger wind gusts over the western zones. Shear has become more limited, thus decreasing the overall severe potential. The remainder of the week will features a rebounding upper ridge with near normal temperatures. The occasional shortwave pushing through the top of the ridge will bring small chances for showers and thunderstorms. FORECAST CONFIDENCE & DEVIATIONS: Confidence is moderate that scattered thunderstorms will develop late today as steepening mid-level lapse rates and daytime heating support moderate instability. Isolated stronger storms are possible with modest shear profiles although the showers and thunderstorms from overnight may have an impact on instability today. && .AVIATION... VFR. After showers exit the region early this morning, expect clearing skies for most of the day. Another round of thunderstorms could move across the TAF sites tonight. && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow