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    Elliot Abrams

    Heavy Rain Drifts North From Middle Atlantic Region

    By Elliot Abrams, AccuWeather chief meteorologist
    7/12/2013, 3:45:20 AM

    Friday 8 a.m.

    Dry air advanced from the Great Lakes into much of the Northeast yesterday. However, a small upper-air storm from the northwest has interacted with moisture along the boundary between the dry air and the air mass that has been so warm and humid lately. The result was an outbreak of heavy rain, mostly in central and eastern Virginia, much of Maryland and southern Delaware.

    In many cases, when we see rain breaking out in that area, the storm responsible will simply track northeastward and the rain will spread up the coast. During the early morning hours of Friday, rain did advance into southern Pennsylvania as well as into Delaware and extreme southern New Jersey. A few showers also broke out between Philadelphia and Trenton.

    However, the upper-air low pressure area is forecast to start backing westward then southwestward as a high pressure area grows over the Great Lakes and Northeast. This process will limit the northeastward advance of the rain. Unfortunately, we don't know of that advance will stop in New Jersey... or New Hampshire (or somewhere in between). This means it is important to check back with Accuweather.com as frequently as you can. Here's my daily video:

    Chicago and surrounding cities have been treated to fantastic weather for the last couple of days. This video should give you an idea about what to expect next.

    This picture shows where the heaviest rain was located at 8 a.m. EDT:


    The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com


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    Elliot Abrams