Sat-Sun, July 20-21st Severe T'Storm Threat Update #1

(10:00PM - 7/19/19) Multiple disturbances expected to move through the region will bring the chance for severe t'storms to portions of the state Saturday and Sunday.

7/20/19 - Saturday Morning-Night Forecast...
Scattered showers and t'storms will develop and/or regenerate Saturday afternoon across portions of Wisconsin, Iowa and Northern Illinois. This activity will then push across much of Northern and portions of Central Illinois, Saturday afternoon into Saturday night. Multiple waves of activity can be expected during this time-frame. The environment in place will feature high instability, high moisture and low shear. This will help support an isolated severe t'storm threat across Northern Illinois, with damaging winds and hail being the main threats. An upgrade in severe t'storm probabilities may be needed in future updates.

Sunday's threat will be discussed in future updates.

Below is the TAM severe t'storm forecast for Saturday morning-night.

​JP

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