(9:30PM - 6/26/19) Several smaller disturbances moving through the region will bring the chance for severe t'storms to portions of the state through Friday.
Tuesday-Tuesday Night Recap...
Scattered showers and t'storms developed and pushed across portions of Northern Illinois Tuesday afternoon. Some of these t'storms were severe, with wind and hail being the main threats that occurred. Tuesday evening into Tuesday night, a complex of rain and t'storms that developed across Southern Iowa pushed across Western and Central Illinois. Severe t'storms were widespread with this activity across Western Illinois, waning with time across Central Illinois. Wind and hail were the main threats that occurred with this activity.
Scattered showers and t'storms have been ongoing across portions of Northern Illinois this evening, with some storms having been severe. This activity will continue for a few more hours, into early tonight, before diminishing. A few storms may continue to be severe until that time, with wind and hail being the main threats. Across Southern Illinois, an area of rain associated with a departing area of t'storms will continue into tonight, along with the chance of an isolated t'storm.
Isolated to scattered showers and t'storms may be ongoing Thursday morning, across portions of Southern Illinois. This activity will be associated with a left over disturbance that will be caught under the building ridge of high pressure in the region. Continued scattered showers and t'storms will be possible through the day on Thursday and into Thursday night across Southern Illinois, associated with this lingering disturbance. An environment characterized by low instability, moderate moisture and low shear will be in place. This will aide in an isolated severe t'storm threat across Southern Illinois, with wind and hail being the main threats. Of greater focus will be further north, where a complex of rain and t'storms may push into portions of Northern Illinois Thursday afternoon or evening, lasting into Thursday night. An environment characterized by high instability, high moisture and low shear will be in place. This will help support an isolated severe t'storm potential for portions of Northern Illinois. Wind and hail will be the main threats. An upgrade in severe t'storm probabilities may be needed in future updates.
A severe t'storm threat will likely continue into at least Friday for portions of the state. This will be discussed further in upcoming updates as the time approaches.
Below is the updated TAM severe t’storm forecast for today/tonight and Thursday/Thursday night.
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