Overnight storms leave more than 60,000 without power and flood warnings

A long line of severe thunderstorms that swept across Chicago and the suburbs Saturday night and early Sunday left more than 60,000 Commonwealth Edison customers without power as flood warnings continued throughout the area, authorities said.

As of 9 a.m. on Sunday, 61,000 ComEd customers were without power, the utility giant said. ComEd said it expects most outages to be restored by 9 p.m. Sunday, with some taking until 2 p.m. Monday to fully resolve.

While Sunday’s weather was expected to be tamer, flood warnings and advisories remained in the morning, mostly for the suburbs southeast of Chicago until noon as storm impacts lingered, the National Weather Service said. The service said the weather on Sunday should be relatively calm with a high of 81 degrees.

The storms caused significant delays and cancellations at O’Hare International Airport, where, as of 8:30 a.m. Sunday, the Chicago Department of Aviation reported there had been 264 flights canceled in the previous 24 hours.

In addition, a beach hazard statement from Saturday continued into Sunday morning, and the entire southern Lake Michigan coast was expected to have dangerous swimming conditions until Monday morning.

The city of Aurora posted on X that power was lost to water pumps and two fire stations as a result of the storms but the fire stations were back online late Sunday morning.

At 4:45 p.m. on Saturday, the Mount Prospect Fire Department responded to an incident at a four-story apartment complex whose roof was torn off by the storm. The building was evacuated immediately, and there were no injuries reported.