(10:30PM – Sunday, May 19th, 2024) Sunday night update on a storm system will move through the region, bringing several rounds of rain and t’storms, with the potential for severe t’storms, to portions of the state over a multi-day period from Monday through Wednesday, May 20-22nd.
Update…
•With this update, little change was needed to the going severe t’storm forecast for Monday.
•With this update, we have issued our first severe t’storm forecast for Tuesday/Tuesday night.
Timing & Location…
•Monday Morning – Tuesday Morning, May 20-21st: Northern & Central Illinois.
•Tuesday Morning – Wednesday Morning, May 21-22: Much of Illinois.
•Wednesday Morning – Wednesday Evening, May 21-22: TBD.
Impacts…
•A level 1 severe t’storm risk is in place across Northern and Central Illinois from Monday midday through Monday evening for the possibility of isolated severe t’storms. Damaging winds, large hail, and an isolated tornado will be the threats with activity. Isolated to scattered showers and t’storms will traverse the state from Monday morning through Tuesday morning. An isolated severe t’storm threat will exist across outlooked areas with activity from late Monday morning through Monday evening.
•A level 1 to 2 severe t’storm risk is in place across much of Illinois from Tuesday morning through Tuesday night for the likelihood of isolated to widely scattered severe t’storms. Damaging winds, large hail, and a few tornadoes will be the threats with activity. Periods of showers and t’storms can be expected across Northern Illinois throughout Monday and Monday night. A round of showers and t’storm can be expected across Central and Southern Illinois more so Tuesday evening and Tuesday night. A severe t’storm threat will exist across outlooked areas with activity from for much of this period.
•A severe t’storm threat will also exist on Wednesday. More specific information regarding the potential for this day is to come in future updates.
