9:55am Update: A few rumbles of thunder may be heard south of Dixon as a couple embedded storms have developed within the rain band. Heavier showers now just west of Rockford will continue to lift northeast.
A large upper level low in Iowa will lift northeast into the Upper Great Lakes this evening. Showers overnight cleared the Stateline early this morning but an upper level disturbance lifting out Missouri has allowed shower activity to redevelop and lift into northwest Illinois.
As the low moves closer this afternoon the current cloud cover may begin to break apart and allow for some heating to take place at the surface. Temperatures at the surface will warm into the lower 60s, but temperatures will quickly decrease with height as the low moves overhead. This may cause the air to become unstable and allow for afternoon thunderstorm development. Right now the greatest threat for severe weather would be northeast Illinois eastward into Indiana and Michigan. However, should storms develop closer to home hail along with gusty winds would be our primary threat.
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