Lake-Effect Snow, Alberta Clippers Return

By , Senior Meteorologist
January 31, 2013; 3:58 AM ET
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As the latest surge of arctic air sweeps across the Upper Midwest, the northern Appalachians and neighboring Canada, freeze-ups, heavy, lake-effect snow and other areas of accumulating snow will erupt.

While the new wave of cold air will not be as long-lasting as that of a week ago, it will pack a punch, especially in the vicinity of the Great Lakes.

First, plunging temperatures and spotty snow lead to a quick freeze-up of wet, slushy areas late Wednesday night from the eastern end of the Ohio Valley to part of the central and southern Appalachians and southwestern Ontario.

For example, daytime temperatures Thursday in much of western Pennsylvania will be below the 32-degree mark, when compared to 60- to 70-degree peak readings from Wednesday.

Despite the amazing warmth of late, a sharp change to colder weather is in store before the end of the week, including areas of slippery travel. ( image and thumbnails)

Next, bands of heavy snow will set up downwind of the large bodies of water.

Where the bands of snow persist, accumulations from 1-2 feet of snow are possible over a 24- to 48-hour period.

Beginning Friday and continuing into the first part of next week, a series of weak storms originating from western Canada, known as Alberta Clippers, will attempt to spread areas of accumulating snow and flurries from the Midwest to New England and the mid-Atlantic.

However, there is the potential for just enough snow to cause slippery travel in the Washington, D.C., and Baltimore, Md., areas by Friday morning rush hour.

Another clipper storm could bring a small amount of snow to portions of the Ohio and Tennessee valleys during Saturday. will have more details on who is most likely to receive the most from the storms in the coming days.


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