National Weather Service United States Department of Commerce

Mississippi Valley Summer Heat Wave; Severe Thunderstorms and Flooding Possible to the North

A dangerous summer heat wave will continue much of the Plains, Mid/Lower Mississippi Valley, Southeast U.S. today and Thursday. Areas of severe thunderstorms may occur today and again on Thursday from parts of the northern/central Rockies and High Plains into the Ohio Valley and Carolinas. Excessive rainfall over similar areas may bring flash flooding today and Thursday. Read More >

Overview

  • Multiple precipitation events, including the first being a rain/snow event, brought 3 to 5+ inches of precipitation across northern Illinois and northwest Indiana between April 27 - May 2.

  • Most area rivers quickly went up into flood stage by April 29, including the Illinois River reaching major flood stage at Morris and LaSalle May 1-4. The LaSalle River at LaSalle crested at its third highest stage on record for that location (preliminary). Impacts near the rivers were felt in numerous communities.

  • Other flooding was seen on some area roads, parks, and other properties, especially on Tuesday April 30 and Wednesday May 1.

Rainfall Summary

 

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Additional recaps can be found on the NWS Chicago Past Events Page
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