(CNN)A flash flood emergency has been declared for the Washington, D.C., metro area until 2 p.m. Monday by the National Weather Service.

Areas of concern include the Great Falls, Virginia, area and southeastern Montgomery County, Maryland.

Extremely heavy rain continues to fall over much of the area, including the District of Columbia.

    Storms are also affecting airports, with traffic heading to Reagan National stopped on the ground. Departure delays by more than one hour have been reported.

    “Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots,” according to the weather service. More than a dozen high water rescues have already been reported in the area.

    The Alexandria Fire Department has responded to five water rescue calls in their jurisdiction, all from people who needed rescuing from their vehicles. No deaths, injuries, or missing people are reported at this time, said Alexandria Fire Department Senior Public Information Officer Raytevia Evans.

    Jeff DuVal, a deputy director of the Department of Transportation & Environmental Services in Alexandria, Virginia, told CNN the flash flooding has already closed a number of roads.

    “We are waiting for rain to subside and the water will take some time to drain. Then we can go and inspect and see how many roads were compromised,” he said, noting that along some roadways, the water is three feet high.

    “Even though the rain has slowed down, the intersections and roads will remain flooded because the drains simply can’t handle the volume of rain that’s being sent their way,” said DuVal. He explained that even if the rain stops within an hour or two, “there is no way of knowing how long it will take for the flooding to subside.”

      Drivers face the greatest danger.”Most flood deaths occur in vehicles,” according to the National Weather Service, which advises against driving into “any area where water covers the road.”

      The service requests motorists to “move to higher ground as quickly as possible.”

      Source: http://edition.cnn.com/


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