Thunderstorm Wind in Sweet Grass County, Montana

Thunderstorm Wind May 13, 2026 · Sweet Grass County, Montana

58 mph

Measured gust (50 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Mesonet station DBYM8 Derby Mountain gusted to 58 mph.

The wider storm

A shortwave brought about windy thunderstorms across much of southern MT. In it's wake, a cold front crossed the area, and strong winds behind the front persisted well into the 14th. Non-convective gusts up to 80 mph were observed, with convective gusts up to 80 mph observed.

Began near Mc Leod (45.5800, -109.8800).

Source: NOAA Storm Events Database, event 1344407. Narratives are written by the National Weather Service forecast office that issued the report.

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