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    DC: Flooding Downpour Risk to Return This Week

    By by Alex Sosnowski, senior meteorologist.
    August 20, 2014, 9:06:35 AM EDT

    Washington, D.C. will soon again be in a zone of drenching showers and thunderstorms.

    A reinforcing pocket of dry air will settle across New England into Tuesday while a cluster of heavy rain and thunderstorms will push eastward across the southern Appalachians and mid-Atlantic.

    The risk of drenching rain with flash and urban flooding through Tuesday will be well south and west of the city.


    However, as yet another batch of showers and storms moves in from the Midwest, the risk of disruptive downpours will expand northward across the area Wednesday into Friday.

    Detailed Washington, D.C. Forecast
    Washington, D.C. Interactive Weather Radar
    INFOGRAPHIC: Heavy Rainfall Submerges Areas From Detroit to Boston

    People driving or catching connecting flights could experience weather-related delays.

    Rounds of showers and thunderstorms will extend from the Upper Midwest to the lower mid-Atlantic during much of the week including such cities as Minneapolis, Chicago, and Pittsburgh. The disruptions may extend northeastward to include Philadelphia and New York City later in the week.

    Temperatures this week will be near-average. Typical highs and lows for mid-August are 86 and 70 degrees respectively.

    A couple of days of above-average warmth are possible during the last week of August, where temperatures may reach near 90 F.

    A large area of wet soil conditions from the Midwest to the East will continue to hold back high temperatures in general. A significant amount of the sun's energy will be used evaporating this moisture, rather than heating the ground and lower atmosphere.

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