Thunderstorm Wind in Marshall County, South Dakota

Thunderstorm Wind August 15, 2025 · Marshall County, South Dakota

71 mph

Measured gust (62 kt)

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

What the National Weather Service wrote

Winds in excess of 70 mph were measured at Sunset Colony.

The wider storm

Strong storms during the early morning hours of August 15th would generate winds in excess of 70 mph at Sunset Colony, and half-dollar to ping pong sized hail observed by the Marshall County Emergency Manager in Britton. Total rainfall in Britton over a 48 hour period exceeded 4.5 inches, with this latest round of storms overwhelming drainage systems and causing flooding in town.

Began near Amherst (45.7900, -97.8900).

Source: NOAA Storm Events Database, event 1290365. Narratives are written by the National Weather Service forecast office that issued the report.

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