A Special Weather Watch was issued at 12:30pm CDT for Illinois set to expire at 2:00pm CDT.
The area being updated is Illinois.
At 1:56pm CDT, radar was indicating the squall line was still moving through Illinois.
Thus, the watch is extended until 4:00pm CDT.
Also, The Watch area in South Illinois is cancelled.
Central and Northern Illinois remain under the watch until 4:00pm CDT.
People in the new watch are advised to prepare for thunderstorms, possible flooding, and secure outdoor objects.