Jul 21, 2016
Persistent warm and moist advection over an outflow boundary triggered thunderstorms over west central WI that organized into a large and slow moving squall line. The slow moving line of storms produced numerous areas of straight line wind damage and some areas of flash flooding over southern WI during the late afternoon and evening hours. Power outages across southern WI affected approximately 25,000 customers.
Source: NOAA National Weather Service Storm Events Database (event 653932). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Dane County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.