National Weather Service United States Department of Commerce


Widespread showers and thunderstorms, over a 2-day period,  brought heavy rain and other severe weather to the region on Monday, Sept. 3rd and Tuesday, Sept. 4th, continuing into the morning hours of Wednesday, Sept. 5th.

The heaviest rain Monday into Tuesday fell over northeast Iowa into southwest Wisconsin.  The next day and night, the heaviest rain fell Tuesday evening into Wednesday morning. Rainfall rates were 2-3 inches per hour at times.

Widespread street and other urban flooding occurred, along with rapid rises on area rivers and streams.  Some area rivers climbed back into MAJOR flood stage from flooding the week before, and other rivers approached flood stage for the first time through the active pattern. Rock and mudslides were reported in some of the hilly locations, and there were numerous road closures (especially in southwest Wisconsin).

There was also sporadic wind damage and one tornado (EF-1) as the storms moved through.

24 hour rainfall through 6 am Sep 5 2018
24 hour rainfall through 6 am Sep 5, 2018
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