May 25, 2013
Thunderstorms produced flash flooding and large hail in southeast South Dakota from late evening of May 25th into the morning of May 26th. While many of the storms were in the far eastern part of the state, including the Sioux Falls area, there were also scattered storms further west.
Source: NOAA National Weather Service Storm Events Database (event 452575). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Minnehaha County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.