May 5, 2007
A large upper low pressure area in the southwest United States spun off a strong upper level disturbance into the northern plains. This disturbance lifting over the area along with a north to south frontal boundary, powerful low level winds, and abundant gulf moisture resulted in training thunderstorms across northeast South Dakota. The training thunderstorms produced anywhere from 3 to 10 inches of rainfall resulting in widespread flash flooding across Brown, Buffalo, Hand, Spink, Clark, Day, a
Source: NOAA National Weather Service Storm Events Database (event 36405). 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.