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    Cincinnati to Boston: Storms, Severe Weather to End Heat

    By By Alex Sosnowski, expert senior meteorologist.
    July 21, 2013, 4:36:15 AM EDT

    Some folks could be stranded, left in the dark or bailing water in the wake of heat-busting storms this weekend from the Midwest to the Northeast.

    The weather pattern will shift enough to trim temperatures and humidity in many areas but is likely to set off heavy, gusty thunderstorms during the transition.

    There was a severe weather outbreak near the Great Lakes to across the St. Lawrence Valley bordering Canada and the United States Friday afternoon and evening.


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    The storms across north could be the most intense of the season for some locations with damaging wind gusts, large hail, torrential downpours and perhaps a few tornadoes.

    While atmospheric conditions will change enough to somewhat limit the intensity of the storms farther south by Saturday, a few communities from the Ohio Valley to the mid-Atlantic and New England could still be hit hard.

    The storms may cause localized downed trees and power outages, as well as flash and urban flooding.

    Road and flight delays are likely as the storms erupt and roll through.

    Locations that are in the threat area include Cincinnati, Pittsburgh, Albany, N.Y. and Augusta, Maine, during the afternoon, reaching Boston, Hartford, Conn., New York City, Trenton N.J., Philadelphia and Washington, D.C. late in the day.

    RELATED:
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    By Sunday, cooler and less humid air will filter across the Great Lakes and the Northeast.


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    However, the humidity will be slow to leave from the Ohio Valley to the southern mid-Atlantic and across the South. These areas could be unsettled Sunday with showers, locally strong thunderstorms and considerable cloudiness.

    A disturbance rolling eastward from the Plains has the potential to return heavy rain to part of the mid-Atlantic Monday.

    While extreme temperatures are not forecast to return quickly and we may not see duration heat experienced this week repeated this summer in the Northeast and around the Great Lakes, humidity levels are likely to creep back up next week.

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