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 significa

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