(10:30PM Fri, August 11th 2023) Friday night update regarding back-to-back storm systems that will move through the region, through Monday. This will lead to daily chances for rain/t’storms across the state, with severe t’storm potential expected as well.

Update…
•With this update we have slightly adjusted severe t’storm proabilites across portions of the state on tonight’s forecast, based real time information and trends..
•With this update we have upgraded severe t’storm probabilities across portions of the state on Saturday/Saturday night’s forecast.
•With this update we have issued the first forecast for Sunday/Sunday night.

Timing & Location…
•Tonight – Early Saturday Morning, August 11-12th: All of Illinois.
•Early Saturday Morning – Early Sunday Morning, August 12-13th: Much of Illinois
•Early Sunday Morning – Early Monday Morning, August 13-14th: Western & Southern.

Impacts…
•A level 1 to 2 severe t’storm risk is in place across all of Illinois, from tonight through early Saturday morning. Isolated to widely scattered severe t’storms are likely, posing a risk of damaging winds, large hail and an isolated tornado.
•A level 1 to 2 severe t’storm risk is in place across all of Illinois, from early Saturday morning through early Sunday morning. Isolated to widely scattered severe t’storms are likely, posing a risk of damaging winds, large hail and an isolated tornado.
•A level 1 to 2 severe t’storm risk is in place across all of Illinois, from early Sunday morning through early Monday morning. Isolated to widely scattered severe t’storms are likely, posing a risk of damaging winds, large hail and an isolated tornado.