Arctic Blast Brings Risk of Snow and Ice to Britain

The cold weather, which comes on the heels of a storm that caused flooding in Wales, is expected to jolt Britain out of its recent run of mild temperatures.

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What Will Winter Bring? NOAA Outlook May Offer Some Clues.

Federal forecasters broke down the most likely scenarios around the United States this week.

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State Department Adviser Charged With Illegally Storing Classified Documents

Ashley Tellis, an expert on South Asian affairs, was arrested after the F.B.I. said federal agents found hundreds of pages of sensitive government records at his home in Virginia.

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Mount Everest Just Recorded Some of Its Most Intense Snowfall Ever

A storm buried tents and stranded people on the mountain last weekend. Some experts think it might have set a record.

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How a Birthday Boat Ride on Lake Tahoe Turned Tragic

Eight people died when a surprise storm caused dangerous waves on the lake along the California-Nevada border, upending boats and tossing passengers into the frigid water.

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After Snow and Frigid Temperatures, the Southeast Now Faces Icy Roads

Officials throughout much of the South have echoed the same message: The effects from the rare winter storm are not over, and driving remains a hazard.

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Why Is It So Cold in the South If the Planet Is Warming? Here’s What We Know.

A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of climate change.

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A Rare Winter Storm Is Sweeping Through the Gulf Coast

“So many of you have never seen an event like this,” Louisiana’s state climatologist warned, with New Orleans facing possibly the most snow it has ever seen.

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Significant Winter Storm Heads to the Mid-Atlantic and Northeast

Snow was falling in the Mid-Atlantic on Sunday before the coldest air in several years descends across much of the country starting on Monday, forecasters warned.

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