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Severe Weather and Heavy Rainfall Potential for the Plains; Coastal Low Across the mid-Atlantic

An upper trough and frontal boundary will focus showers and thunderstorms across portions of the Plains through early Monday; A few severe thunderstorms along with heavy rainfall are expected. Meanwhile, low pressure off the Southeast Coast will bring inclement weather across the mid-Atlantic coast through Monday. This system is forecast to meander off the coast then track inland early this week. 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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