The severe thunderstorm warning was issued just before 4 p.m. on Sunday.
There is no information provided in the given text about any injuries resulting from the canopy collapse at the gas station.
The pop-up storm on Sunday night affected several areas in northern Illinois, including Rockford. In Rockford, the storm caused damage at a Mobil gas station on Meridian Road by the U.S. 20 exit, where strong winds knocked down a canopy. The storm also brought severe weather to other parts of northern Illinois, with excessive heat predicted to hit the region in the following days.