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    Watch for Thanksgiving Wintry Mix in Pennsylvania, New York

    November 25, 2010; 11:00 AM ET
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    A system that brought severe weather to the Mississippi Valley Wednesday was bringing a wintry mix to portions of Pennsylvania, northwest New Jersey and upstate New York on Thanksgiving Day.

    While the storm system will bring rain to much of the Northeast later Thanksgiving Day into Friday, it is not a wet forecast for all of the region.

    AccuWeather.com users were first warned of this possibility early this week.

    People in the Ohio Valley from Illinois to Ohio were getting a taste of the icy mix Wednesday. The system has already contributed to multiple automobile accidents.

    Folks heading to grandma's house for a brief visit on Thanksgiving Day may have some wintry travel problems to contend with along the interstate 78, 80, 81, 86, 88 and 99 corridors..

    If all the pieces were to fall into place, up to a few inches of snow and some sleet could fall, coating roads and making for slippery conditions along the southern tier of New York and north-central and northeastern Pennsylvania.

    However, even in areas were snow does not show, a thin coating of sleet and icy areas could make for dangerous travel conditions for a time over part of the central Appalachians.

    The wintry mix area would then work northward and eastward into northern New York state, including the northern Hudson Valley later in the day during Thanksgiving.

    The red area on this map marks the most likely area for a wintry mix of ice, rain and snow to occur.

    Cities that could be impacted by the wintry weather for a time on Thanksgiving include Altoona, State College, Williamsport, Bradford and Wilkes-Barre/Scranton in Pennsylvania and Elmira, Binghamton, Syracuse, Ithaca, Utica and Albany in New York.

    AccuWeather.com's Joe Bastardi was impressed with how cold it got around Chicago Tuesday.

    "Temperatures were stuck in the 20s at midday and that sneaky cold air seems to be fighting its way eastward," Bastardi said.

    Fresh cold air through a deep layer in the atmosphere is a key ingredient for snow to reach the ground.

    This necessary ingredient for marginal snow situations has been long taught to students and meteorologists under the direction of Dr. Joel N. Myers, Founder and President of AccuWeather.com and Alumnus and former professor of meteorology at the Pennsylvania State University.

    The setup for Thanksgiving Day may just be a little tease as to what lies ahead for the Northeast during December.

    An upcoming change in the weather pattern may lead to much more extensive areas of snow and ice during the busy shopping month.

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