National Weather Service United States Department of Commerce

Overview

Two main rounds of storms moved through the region over the weekend of July 13-14. The first developed Saturday afternoon with storms quickly organizing and intensifying as they moved into southeast Minnesota and west-central Wisconsin. These storms quickly morphed into a bow echo that produced substantial tree damage as it raced eastward across Trempealeau and Jackson counties into central Wisconsin. A few other trailing storms produced large hail up to 2" in diameter (mainly within the Mississippi River Valley) and scattered wind damage across southeast Minnesota. 

A second round of storms developed Saturday night in the very humid airmass overhead. Heavy rain with these storms, falling over areas that had already received substantial rainfall from the first round of storms, led to localized flash flooding and rapidly rising rivers Sunday morning across western Wisconsin.

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Radar loop from 2pm CDT Saturday through 7am CDT Sunday
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