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    Harrisburg: Downpours to Return at Midweek

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

    Harrisburg, Pennsylvania, will be on the northeastern edge of drenching showers and thunderstorms at midweek.

    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 flash and urban flooding on Tuesday is likely to stay well south of Harrisburg.


    However, as yet another batch of showers and storms moves in from the Midwest and takes a path farther to the north, the risk of disruptive downpours will expand across the area later Wednesday into Thursday.

    Detailed Harrisburg Forecast
    Harrisburg Interactive Weather Radar
    AccuWeather.com MinuteCast™ for Harrisburg

    People driving or catching connecting flights from Tuesday on could experience 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, Pittsburgh, Baltimore and Washington, D.C.

    Temperatures this week will be slightly-below average. Typical highs and lows for mid-August are 83 and 64 degrees respectively.

    A couple of days of above-average warmth are possible during the last week of August, where temperatures may reach well into the 80s.

    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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