Thunderstorm Wind in Gregory County, South Dakota

Thunderstorm Wind August 17, 2025 · Gregory County, South Dakota

63 mph

Measured gust (55 kt)

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

What the National Weather Service wrote

Thunderstorm wind gusts were measured by South Dakota Mesonet station GRMS2 Gregory 16N.

The wider storm

An isolated thunderstorm over south central South Dakota developed within an axis of strong instability and DCAPE during the evening hours. Before weakening, an isolated severe wind gust occurred in northern Gregory County.

Began near Dixon (43.4600, -99.4400).

Source: NOAA Storm Events Database, event 1290919. Narratives are written by the National Weather Service forecast office that issued the report.

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