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    Elliot Abrams

    Dreary, Dull, Damp and Dim

    By Elliot Abrams, AccuWeather chief meteorologist
    4/29/2013, 4:50:57 AM

    Monday 9:30 a.m.

    A large high pressure just off the New England coast controls the weather from Maine to Virginia, but with vastly different effects. Close to the high pressure center, fine weather is the rule, and it may stay nice all week.

    Farther south and southwest, however, the clockwise flow around the high is sponsoring a moist southerly flow of air from near New York City all the way south past the Carolinas. From the coast to the Appalachians, overcast gray skies rule the day and there are numerous pockets of rain and drizzle.

    There are two primary ways out of this situation. The most common is for a storm and a cold front to advance from the west, and once the front goes by, westerly winds bring in drier air. Well, forget about that method working any time soon. The nearest cold front is on a line from Wisconsin to Kansas, and it will be held up by the development of south to southwesterly flow aloft. A series of low pressure areas will form along this front, and each will head northeast. As each one departs, the cold front will be drawn eastward, but not for long. Another low pressure area will form, then another... and as each one approaches, the front may swing back more to the northwest. Eventually, the whole system will move east but perhaps not until next week!

    The other major way for the Middle Atlantic states to get out of one these dreary regimes is for the offshore high to build westward or southwesterly. When this happens, the flow from the ocean is cut off, and clearing trend follows. The setup developing in the middle of the country increases the likelihood that the high will be able to build in and promote clearing in a few days. This video has more:

    Cloudiness covers a large area. A few pockets of clearing show up where south winds ride downhill from mountains to lowlands. Air warms and dries with descent. Notice clearing downwind (northwest of) the Smoky Mountains.


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

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    Elliot Abrams