Heavy Rain and Flooding Affect Southern Fox Valley

Preliminary Information -- subject to change.  Last updated 5/4/12  11 am

Thunderstorms with very heavy rain developed along a slow moving front over central Wisconsin during the early morning hours of May 3, 2012.  Several storms moved along the same general area, producing copious amounts of rainfall.  Over four inches of rain fell across Winnebago County, with nearly that much in Calumet County.  Two to four inches fell in nearby Manitowoc County.  The heavy rain resulted in flash flooding and urban flooding early in the morning of May 3.   At the official observation site in Oshkosh, 3.75" of rain fell, beginning late on May 2.  A new daily all-time May record was set in Oshkosh, as 3.07" of that total fell on May 3rd alone (records kept since 1893).   Winnebago County emergency management reported 5.25" a couple miles west of Oshkosh!

Additional storms formed during the mid-morning hours and produced urban flooding in the city of Appleton.


Radar Rainfall Estimates (Click for larger view)

Radar rainfall estimates. Click for larger view.  Radar estimated rainfall over Fox Valley - Click for larger view
Radar rainfall estimates from the NWS Green Bay Doppler radar.  Heaviest rainfall of over 4+ inches fell across parts of Winnebago County near Oshkosh. Close-up view of rainfall estimates across Fox Valley.  Color scheme is a little different than state view.

 
Flood Pictures (Click for larger view)

   
Highway 41 in Winnebago County. Hilbert in Calumet County.

Click here for a table of rainfall observations from our network of Coop observers and storm spotters.

 

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