Jun 7, 2008
A warm front extended east to west across the Upper Mississippi Valley on June 7, which provided the focus for thunderstorms producing excessive rainfall. In fact, these storms exhibited very high rainfall rates, which led to 1 to 2 inch rainfall amounts in an hour or so. As the storms congealed into a larger scale line of thunderstorms, they continued to move over the same areas, which led to significant flash flooding through the evening and overnight. ||On June 8, the warm front was lingering
Source: NOAA National Weather Service Storm Events Database (event 122536). 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.