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    Waves of Cold, More Storms After Thanksgiving

    By By Alex Sosnowski, expert senior meteorologist.
    November 19, 2012, 5:32:03 AM EST

    A look at the calendar should speak for itself, but there are signs on the weather maps of some changes to come.

    You really didn't think that sunshine would last through the holidays?

    The good news for travelers and quiet weather fans is more weather pleasantries are coming into the Thanksgiving weekend.

    Through most of the Thanksgiving weekend, areas of high pressure will keep a slow-moving Atlantic nor'easter at bay and should keep Pacific storms from making major progress through the interior West. Only a few fog patches and spotty rain are likely to occur in between.

    However, beginning around or just beyond the Thanksgiving weekend and continuing into December, it seems much of the U.S. will enter into a pattern more typical for the time of year, ending the string of sunny days for many locations (some areas will tally 10 to 14 days of sunshine before the pattern ends).


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    The storm track, which moved west to east over central and southern Canada during week three of November and will continue through week four, will nose southward to the northern third of the United States beginning late in the month.

    The result is likely to yield more significant waves of cold air and storms with more wintry precipitation in northern areas. At least a few episodes of clouds, showers and perhaps thunderstorms will affect some southern areas.

    The waves of cold air following most of the storms will be significant enough to bring rounds of lake-effect snow.

    There will be breaks in between the storms, of course, but don't expect one to two weeks of sunshine, except for say the Southwest.

    On a more technical note, the overall pattern later in the month and beyond will remain favorable for some of these storms to gain strength upon reaching the Eastern states. This blocking pattern has shown its nature already this fall by way of Sandy and the nor'easter snowstorm that followed a week later.

    The output of the storms moving eastward could yield not only drenching rain, but areas of heavy snow, ice and even severe weather.



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    AccuWeather.com released an update to its Winter Forecast for 2012-13 on Monday, Nov. 19.

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