Henry Margusity

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Dramatic Weather Changes with Snow and Harsh Cold

January 11, 2012; 8:17 AM ET

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1. This is about the most dramatic change in the weather one will see this year as we have several weather events that will produce snow and perhaps even some dangerous weather. I don't normally say dangerous, but given the fact that we have fallen temps with snow, roads may ice over quickly and result in numerous accidents from the Midwest to the Northeast. Let me break things down by event.

A. The storm coming north tonight and Thursday will produce wet snow from the Appalachians into the Northeast. I adjusted the map some for the snow accumulations, but it still looks like the bulk of the wet snow will fall across New York into New England.

B. The arctic front will produce a band of snow and falling temps from the Midwest and into the Northeast. Temps will fall some 20 degrees behind the front causing roads to freeze. The dangerous part of this is the burst of snow with high winds, falling temps and even thunderstorms that will develop in Tennessee and move northeast into New England. Roads may go from wet to icy in a matter of an hour as temps fall and rain changes to snow.

C. In the Midwest and western Great Lakes, the combination of high winds, harsh cold and moderate snow will create almost blizzardlike conditions Thursday into Friday. Chicago will get hit hard by the harsh weather. Snowfall will be around 3-6 inches.

D. Lastly, lake-effect snow will develop by Thursday night and last through Friday. Some places are going to pick up over 2 feet of snow in the traditional west-northwest wind direction locations.

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

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Henry Margusity
AccuWeather.com severe weather expert, Henry Margusity, offers the Meteorological Madness blog including detailed analysis of severe weather across the US.