With the first round of thunderstorms exiting the area, we turn our attention to the evening hours, when severe weather is much more possible. A Tornado Watch has been issued for Winnebago, Ogle, Lee, DeKalb, Whiteside, Carroll, Stephenson, and Jo Daviess counties until 9 pm.
The likely area for severe weather appears to be along and south of I-88, into Ogle, Lee, Whiteside, and Carroll counties in north central Illinois. A slight chance for severe storms still exists this evening for the rest of northern Illinois, including Rockford.
In the counties within or neighboring the I-88 corridor, numerous severe storms are possible with the risk for large, dangerous hail and isolated tornadoes. These storms will brew up along a cold front that enters the region and moves through between 7 pm and 10 pm this evening. If a warning is issued for a storm bringing large hail, move indoors and away from windows immediately! In the event of a tornado, head below ground or to the lowest central room (like a closet or bathroom) away from windows. The rest of northern Illinois may see a strong storm or two with hail between 7 pm and 10 pm.
Any thunderstorm this evening will be capable of bringing heavy downpours and lightning, in addition to small hail. Head inside as soon as you hear thunder.
A windy Wednesday is set up on the back side of the system, with gusty winds as high as 50mph tomorrow.