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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.


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    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.

    RELATED:
    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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