Hurricane Irene's winds ripped up hundreds of trees around the District, keeping emergency crews working through the night.
Director of Homeland Security and Emergency Management for D.C. Millicent West said that at 7:30 a.m. Sunday, she'd received reports of 200 trees down around the city.
Mayor Vincent Gray said that some of those calls might have been duplicates, and the actual number of trees down would be clearer later in the day.
West urged residents to exercise caution, because some of those downed trees also brought down power lines, and there is the chance that live wires still remain on the ground. West said that her crews crisscrossed the District throughout the evening, their work only interrupted when winds reached their peak speeds, making conditions dangerous. She said as of 7:30 a.m., there were still nearly 100 trees her agency had yet to respond to.
"Be mindful of live wires," West said, "and if you see something, call 311."