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Flash Flood — Marshall, SD

Aug 15, 2025

Flood Cause
Heavy Rain

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.

Source: NOAA National Weather Service Storm Events Database (event 1293391). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Marshall, SD

This event is one of many recorded floods in Marshall County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Marshall County flood data →

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