Power has been restored to tens of thousands of homes and business in Illinois, but thousands of others remain in the dark.
About 13,000 homes and businesses are still without power on Tuesday morning.
Illinois' outage center shows there about 9,000 customers without power on Tuesday morning. The highest concentration is near Peoria, although outages are scattered across central Illinois and in the state's far-southern tip.
Meanwhile in northern Illinois, about 4,000 ComEd customers were also without electricity.
Crews are working to restore power after Sunday's tornadoes slammed the state, killing at least 6 people. But officials have said it could be days before power is restored to the hardest-hit communities.