Electricity provider Pepco said Monday that about 220,000 residences across the District of Columbia, Maryland and Virginia were still in the dark -- and without air-conditioning -- following one of the hottest days of the year.
July's brutal onslaught of record heat continued in the eastern United States, with temperature records set Sunday in Baltimore, Maryland, where it hit 100 degrees, and Washington, where it was 98.
By Monday afternoon, damage had been reported across the region from 270 downed trees or very large limbs, including approximately 20 full large trees, according to the District Department of Transportation. More than 20 traffic signals remained out because of power problems, the department added.
The storm was part of a slow-moving front that struck parts of the Northeast before moving south.
Heat advisories and warnings continue for the Deep South in parts of Georgia and South Carolina through Monday; the heat index is expected to exceed 105 degrees.
CNN's Angela Fritz, Jonathan Helman and Devon Sayers contributed to this report.
