Jun 20, 2012
As thunderstorms rolled across southeast Minnesota during the late afternoon of June 20th, they produced some heavy rains in a very short period of time. Between 2 and 3 inches of rain fell in about an hour and a half. This sent Trout Run Creek out of its banks in the Whitewater State Park (Winona County) causing damage to a walking bridge and washing out a road.
Source: NOAA National Weather Service Storm Events Database (event 390119). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Winona County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.