Areas of concern reportedly include the Great Falls, Virginia, area and southeastern Montgomery County, Maryland as heavy rains continue to batter much of the area, including the District of Columbia. No deaths, injuries, or missing people are reported at this time, said Alexandria Fire Department Senior Public Information Officer Raytevia Evans.
"Everywhere I turned, there was traffic and roads closed", he said.
By early afternoon, thousands of area residents remained without power, according to a Washington Post report.
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Heavy rain caused unsafe flash flooding and the flash flood watch was extended until 2 p.m. on Monday. At its peak, 7,000 Dominion customers were without power.
The advisory is in effect until 3:15 p.m. on Saturday. "It does not appear as though there will have to be any single-tracking".
Frederick police are warning drivers to be cautious even after the water recedes as there may be debris left behind on the roads.
A risky flash flood emergency hit Washington D.C. during the Monday morning commute.