When the polar vortex stretches, North America feels the chill. New research reveals some of the stratospheric patterns ...

What is the polar vortex? The polar vortex is a part of Earth's atmosphere that is found over the North Pole.

“The polar vortex has been particularly strong and stable the past few weeks. That has kept the coldest of Arctic air largely confined to the North Pole,” says Mike Bettes, meteorologist with ...

The sudden winter chill came thanks to the polar vortex, an area of low pressure and cold air in the Arctic near the North Pole, that has taken hold over parts of the country, meteorologists say.

More than 95 million people are facing gripping cold Tuesday as a polar vortex sends temperatures plunging to record levels, closing schools, bursting pipes and forcing communities to set up more t… ...

Weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole into the U.S. and Europe.

More than 95 million people are facing gripping cold Tuesday as a polar vortex sends temperatures plunging to record levels, closing schools, bursting pipes and forcing communities to set up more t… ...