Concerning... Thunderstorm Development: Northern Illinois & Southern Wisconsin
This will be the target focus for thunderstorm development this afternoon. Storm Prediction Center has placed region under SLGT Risk for severe thunderstorms.
Satellite imagery depicts a shortwave moving through the Upper Midwest this afternoon. Clearing is noted near the area being monitored for thunderstorm initiation.
In the last 20 minutes, a few showers and thunderstorms have started to develop over Southern Wisconsin. Shortly before 13:40, Prob Severe of 5-10% was noted on thunderstorm development.
Before the thunderstorms developed it was noted that the area where the thunderstorms developed was noted with a higher Convective Initiation (CI) probability of near 60% before the Prob Severe was indicated on the storms.
One thing to note with these scans, is the KLOT (Chicago) radar is still operating in Clear Air Mode (VCP 31), but despite that it is in Clear Air Mode, we did radar returns on the radar it in Clear Air Mode before we noticed it on the satellite image.
Precipitable Water values indiciated AOA 1.00" we're noted, but there is some drying noted the further on you go into upper levels of the atmosphere.
Forecaster: Schuerman
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