Strong storms swept through the Chicago area Saturday evening, bringing torrential rain, hail, and damaging winds, causing significant damage in several suburbs. In one suburb, the storms tore the roof off of an apartment building.

The waves of storms were aggravated by the heat in Chicago, where temperatures reached the mid-90s on Saturday afternoon.  

Strong storms with wind gusts of up to 60 mph began moving into northern Illinois from Wisconsin around 3 p.m. The storms also have brought hail up to the size of ping pong balls.

Multiple severe thunderstorm warnings were issued throughout the afternoon and evening as two waves of storms moved in from the Wisconsin state line, heading southeast.

The storms caused significant damage for several suburbs.

More than 68,200 ComEd customers were without power as of 9:06 p.m., according to ComEd.

Part of the roof of an apartment building near Route 83 and Dempster in Mount Prospect was torn off in the storms, leaving several cars in the parking lot damaged after debris fell on top of them.

Kamil Seremak said his girlfriend called him to tell him the roof had been torn off, and when he got there, water was pouring down into the building's hallways.

The two of them got their cats out of the building, and then started helping neighbors evacuate.

"The place was just getting flooded. I'm assuming some of the water pipes or something kind of came off with the roof, and the place was just kind of coming down," he said. "I guess it could have been part of the rain, you know, but I definitely think some water pipes or something definitely burst, or something, and the hallways were just kind of coming down. I mean, the water was waterfalls in every hallway coming down."

Several ambulances rushed to the scene, but there have been no reports of injuries. Storm spotters in the area reported wind gusts of up to 60 mph at the time.

Downed trees also damaged a few homes and several cars and blocked streets in Des Plaines. 

The Woodstock Fire/Rescue District said they responded to multiple calls for downed wires after storms started moving through. Officials warned people to assume any downed wires are powered and dangerous, and to stay away. Motorists should never drive over or try to move downed wires in their path.

A large tree came down in Belvidere, near Rockford, hitting a house on Union Avenue.  

A flash flood warning also was issued earlier in DuPage County, where nearly 2.5 inches of rain fell in about 45 minutes in Lisle as the storms moved through.  

A third round of storms is expected to move through the Chicago area after midnight, with fast-moving storms moving through the city before sunrise before things calm down later in the day.