Aug 8, 2009
Thunderstorms began to develop across portions of southern Minnesota the night of August 7th before midnight. A strong low level jet and deep moisture advection caused several waves of thunderstorms to develop along a line from near Hutchinson Minnesota, to the southern Twin Cities metro area, and into portions of west central Wisconsin. Two to four inches of rainfall was common in a 6 hour period, with locally four to six inches in a narrow band from the southwestern portions of the Twin Cities
Source: NOAA National Weather Service Storm Events Database (event 191660). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Pepin County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.