Sep 13, 2005
Rainfall amounts of 2 to 4 inches in one to two hours triggered flash flooding. Due to the heavy rain, water covered streets to a depth of two to three feet in La Crosse, Onalaska and West Salem (La Crosse County). In fact, amateur radio operators reported numerous stalled cars in Onalaska, some of which were even floating.
Source: NOAA National Weather Service Storm Events Database (event 5474737). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Trempealeau County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.