A winter storm dumped snow Tuesday along Interstate 20/59 near downtown Birmingham and on other parts of central and southern Alabama. Tamika Moore/Al.com /Landov hide caption

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Tuesday night's forecast for the lower 48 states shows temperatures below freezing (the shades of blue and purple) across most of the nation. National Weather Service hide caption

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Here we go again. Earlier this month in St. Louis, Jerome Harris bundled up against frigid temperatures. Now, cold air is again rushing south from the Arctic and a "bomb" of a storm is brewing across much of the Eastern half of the nation. Jeff Roberson/AP hide caption

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From the NPR Newscast: 'Bombogenesis'
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Walking was the best way to get around early Friday in Brooklyn, N.Y., where snow and strong winds made driving hazardous. Sebastian Gabriel /EPA/Landov hide caption

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A tree is split in half under the weight of ice and snow in Middleville, Mich. Nearly 29,000 people are still without power in Michigan — but that's down from 200,000 just days ago. Andrew Kuhn/MLIVE.COM /Landov hide caption

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Six-year-old Enari Hernandez (left) and her cousin Maritza Jimenez, 6, play in front of a damaged tree in their neighbors yard on Saturday in Plano, Texas. Stewart F. House/Getty Images hide caption

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Passengers wait for a BoltBus to arrive during a light rain, Wednesday, Nov. 27 in New York. A wall of storms packing ice, sleet and rain could upend holiday travel plans as millions of Americans take to the roads, skies and rails for Thanksgiving. Mark Lennihan/AP hide caption

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