Polar Vortex

Scientists were taken aback, earlier this month, when they noticed that the Arctic's polar vortex has changed its course and has started spinning in the opposite direction.

High in the atmosphere above the North Pole, a spike in temperatures may soon send bone-rattling chills spilling down through the Northern Hemisphere.

A widening snowstorm with an encore of freezing rain iced over the U.S. Midwest on Tuesday and headed east, causing hundreds of flight cancellations and closing schools, and was expected to tangle New York and Boston's evening rush hour.

The polar vortex was raging in the Midwest last week, and temperatures had dropped below zero on the morning of Jan. 31 in the city of Kalispell, Mont., near Glacier National Park. A cat named Fluffy - a northwest Montana native and usually confident outdoor cat - got into some trouble.

People living in in the bitterly cold regions of the American Midwest are purposely freezing their jeans as part of the #FrozenPants challenge, and the pics are hilarious.

The unusually cold weather in the hill states of North India and parts of the plains, including the national capital, has been indirectly caused by the Polar Vortex that usually spins over the North Pole and is currently sweeping across large parts of the US and Canada that is pushing various weather systems downwards, experts say.

Bone-chilling cold that paralysed a large part of the United States this week and caused at least 18 deaths eased on Friday as an errant Arctic air mass retreated, setting the stage for a warmer-than-normal weekend in areas of the Midwest and Northeast.

As the U.S. Midwest and East Coast thawed out from days of bitter, deadly cold, Californians on Friday battened down the hatches ahead of a fierce winter storm carrying heavy rains and high winds that could touch off urban flooding and mudslides.

A torrent of polar air brought record-low temperatures to much of the American Midwest on Wednesday. But how cold is it exactly? Well, temperatures are reaching minus 29 degrees Celsius in certain parts of the Midwest, making it colder than the South Pole.

The blast of Arctic air that brought record-breaking cold and caused at least a dozen deaths in the U.S. Midwest spread eastward on Thursday, bringing sub-zero misery to the Northeast.

A torrent of polar air brought record-low temperatures to much of the U.S. Midwest on Wednesday, making conditions so unbearable that trash haulers stopped making pickups and mail carriers suspended deliveries.

Polar vortex: Nearly 90 million people are likely to experience temperatures at or below zero in the Midwest and New England, according to the National Weather Service; 25 million of them will face temperatures below minus-20 - dips that when combined with wind can cause frostbite in a matter of minutes.

Temperatures are forecast to drop well below zero in the Midwest this week - as cold as around minus-30. The only phenomenon frigid enough to generate that kind of chill is the polar vortex, of which you have heard but might not fully understand.

A blast of arctic-chilled air from the polar vortex brought dangerous, record-setting cold to a wide swath of the eastern United States on Tuesday, stretching from the Dakotas through Maine, with snow expected as far south as Alabama and Georgia

Two-thirds of the continental United States will be a frozen ice box, as the so-called polar vortex of frigid arctic air spins across the U.S. Midwest, clips the Great Lakes, the Ohio Valley and pushes on into New England.

Scientists were taken aback, earlier this month, when they noticed that the Arctic's polar vortex has changed its course and has started spinning in the opposite direction.

High in the atmosphere above the North Pole, a spike in temperatures may soon send bone-rattling chills spilling down through the Northern Hemisphere.

A widening snowstorm with an encore of freezing rain iced over the U.S. Midwest on Tuesday and headed east, causing hundreds of flight cancellations and closing schools, and was expected to tangle New York and Boston's evening rush hour.

The polar vortex was raging in the Midwest last week, and temperatures had dropped below zero on the morning of Jan. 31 in the city of Kalispell, Mont., near Glacier National Park. A cat named Fluffy - a northwest Montana native and usually confident outdoor cat - got into some trouble.

People living in in the bitterly cold regions of the American Midwest are purposely freezing their jeans as part of the #FrozenPants challenge, and the pics are hilarious.

The unusually cold weather in the hill states of North India and parts of the plains, including the national capital, has been indirectly caused by the Polar Vortex that usually spins over the North Pole and is currently sweeping across large parts of the US and Canada that is pushing various weather systems downwards, experts say.

Bone-chilling cold that paralysed a large part of the United States this week and caused at least 18 deaths eased on Friday as an errant Arctic air mass retreated, setting the stage for a warmer-than-normal weekend in areas of the Midwest and Northeast.

As the U.S. Midwest and East Coast thawed out from days of bitter, deadly cold, Californians on Friday battened down the hatches ahead of a fierce winter storm carrying heavy rains and high winds that could touch off urban flooding and mudslides.

A torrent of polar air brought record-low temperatures to much of the American Midwest on Wednesday. But how cold is it exactly? Well, temperatures are reaching minus 29 degrees Celsius in certain parts of the Midwest, making it colder than the South Pole.

The blast of Arctic air that brought record-breaking cold and caused at least a dozen deaths in the U.S. Midwest spread eastward on Thursday, bringing sub-zero misery to the Northeast.

A torrent of polar air brought record-low temperatures to much of the U.S. Midwest on Wednesday, making conditions so unbearable that trash haulers stopped making pickups and mail carriers suspended deliveries.

Polar vortex: Nearly 90 million people are likely to experience temperatures at or below zero in the Midwest and New England, according to the National Weather Service; 25 million of them will face temperatures below minus-20 - dips that when combined with wind can cause frostbite in a matter of minutes.

Temperatures are forecast to drop well below zero in the Midwest this week - as cold as around minus-30. The only phenomenon frigid enough to generate that kind of chill is the polar vortex, of which you have heard but might not fully understand.

A blast of arctic-chilled air from the polar vortex brought dangerous, record-setting cold to a wide swath of the eastern United States on Tuesday, stretching from the Dakotas through Maine, with snow expected as far south as Alabama and Georgia

Two-thirds of the continental United States will be a frozen ice box, as the so-called polar vortex of frigid arctic air spins across the U.S. Midwest, clips the Great Lakes, the Ohio Valley and pushes on into New England.