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Cold Snap in the North and East

Icy Lake Erie
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Icy Lake Erie

Lake Erie is usually the first to freeze over because it is shallower than the other Great Lakes.

Image of the Day Atmosphere Temperature Extremes Sea and Lake Ice

Icy Waters off the U.S. East Coast
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Icy Waters off the U.S. East Coast

Scenes of frozen rivers, bays, estuaries, and coastal seas seem like they belong in the Arctic—not New England and the Mid-Atlantic.

Image of the Day Snow and Ice Temperature Extremes Sea and Lake Ice

It’s Cold—And Hot—in North America
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It’s Cold—And Hot—in North America

Large waves in the atmosphere mean that a cold snap in one area is often accompanied by unusual warmth in another.

Image of the Day Heat Land Temperature Extremes

A Chilly End to 2017 for the Northeast
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A Chilly End to 2017 for the Northeast

Blasts of Arctic air spilling into the Midwest and Northeast are poised to make New Year’s Eve frigid for many Americans.

Image of the Day Atmosphere Temperature Extremes