National Weather Service United States Department of Commerce

Severe Storm Potential Increasing for Tuesday

Rounds of thunderstorms will sweep across the region through Tuesday. Some could be strong to severe at times, with the higher risk (Level 3 out of 5) Tuesday. Be prepared to take indoor shelter if a storm nears your location and remain weather aware. Read More >

Overview

Two rounds of thunderstorms with very heavy rainfall impacted portions of northeast Iowa and southwest Wisconsin Friday, July 21 into the early morning hours of Saturday, July 22. Rainfall amounts across Floyd, Chickasaw, Fayette, and Clayton Counties in northeast Iowa and Grant County in far southwest Wisconsin ranged from 5 to 10 inches. This resulted in significant impacts, including flash flooding, river flooding, rock and mudslides, as well as numerous road washouts. Major flooding occurred along the Turkey, Volga, Little Wapsipinicon, and Grant Rivers, resulting in some evacuations for impacted communities.  

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Radar estimated precipitation from 5 AM July 21 through 5 AM July 22, 2017
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