Aug 14, 2009
A warm front brought severe thunderstorms with large hail up to the size of golfballs along with sixty mph winds to parts of north central and northeast South Dakota. In addition, very heavy rain fell across western Brown county with 2 to 4 inches of rain reported. This heavy rain brought flash flooding conditions.
Source: NOAA National Weather Service Storm Events Database (event 195257). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Brown County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.