Jun 8, 2021
A complex of thunderstorms that began on the evening of June 7th across southeastern North Dakota back-built to the west through the night and then to the southwest through the day on June 8th. This complex impacted north central South Dakota by the early evening on the 8th, leading to flash flooding, severe hail and wind, and a tornado. A favorable environment enabled these storms to produce measured wind gusts generally of 60 to 70 mph, though one report near Bullhead exceeded 90 mph. Rainfall
Source: NOAA National Weather Service Storm Events Database (event 970047). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Corson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.