8:50PM UPDATE: Our storm threat has pretty much ended across northern Illinois as storms continue to shift to the south. Colder air remains in place with temperatures now in the 30s to our north and northeast. Skies will remain mostly cloudy through the night as temperatures gradually drop back into the upper 20s.
5:35PM UPDATE: Scattered showers with a few embedded thunderstorms continue to move across northern Illinois Thursday evening, with severe storms further downstate. The storm over DeKalb County will be capable of pea sized hail as it quickly moves into Kane County. We may see a small increase in shower coverage through 8pm, but the severe threat is quickly shifting south of the viewing area.
Scattered showers with a few embedded thunderstorms have developed over northern Illinois the last few hours, but the storms have remained below severe limits. In fact, our overall thunderstorms risk has decreased and shifted south as the cold front continues to press south late this afternoon.
The threat for showers and embedded thunderstorms will continue across the Stateline as an upper-level disturbance moves in from the west with a little more coverage developing most likely after 6pm or 7pm. The strongest of the cores may still be able to produce some small hail, along with heavier downpours, but the threat for larger hail remains south of I-88.
The latest severe outlook from the Storm Prediction Center has shifted their outlook for scattered severe storms further south. This lines up better with where the cold front sits, higher instability and incoming upper-level disturbance.
Scattered showers and embedded thunderstorms will continue locally through about 9pm or 10pm, with a gradual clearing in skies through the night. Northerly winds will push temperatures into the 20s Friday morning.
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