Aug 19, 2007
A warm front lifting northward into Iowa triggered round after round of thunderstorms with excessive rainfall across southeast Minnesota during the evening and overnight hours of August 18-19. This was after rain had fallen earlier in the day. Total rainfall amounts of 10 to 15 inches were common, which produced widespread and significant flash flooding. An official rainfall total of 15.1 inches near Hokah (Houston County) established an all-time 24 hour rainfall record for the state of Minneso
Source: NOAA National Weather Service Storm Events Database (event 50780). 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.