Wed-Thur, april 29-30th Heavy Rain And High Winds

(2:00PM - 4/29/20) The storm system that brought severe t'storms to the state yesterday is now wrapping up across the Great Lakes, and will be bringing a period of heavy rainfall and high winds to portions of the state, today into Thursday morning.

A very March-like late April day is currently ongoing across much of the state. As a storm system wraps up over the Great Lakes, a large area of rain has been pin-wheeling over Northern and Central Illinois this morning into this afternoon. While rain will come to an end for much of Northwest and Central Illinois this evening, periods of rain will continue across Northeast and Eastern Illinois through Thursday morning. Upwards of 0.50-2.00" of rain will be likely for a good portion of Northeast Illinois, between this morning through Thursday morning. Upward of 0.50-3.00" of rain fell across Northeast Illinois yesterday afternoon into last night. The additional heavy rainfall of 0.50-2.00" on top of what already occurred could lead to minor flood potential for some areas, especially prone areas.

In addition to the heavy rainfall, windy conditions will be likely from this later this afternoon through Thursday morning. During this time, wind gusts of 30-50mph will be likely across Northeast Illinois. Higher wind gusts of 50-60mph likely for areas along the Lake Michigan shore, with isolated higher wind gusts in excess of 60mph possible. This could lead to some tree damage and power outages where the highest winds are expected, near the Lake Michigan shore areas.

There will also be high waves of 5-15ft and 0.5-1.5ft surge along the Lake Michigan shore, which will lead to widespread lakeshore flooding and erosion.

JP

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