Forecasters warn that a split polar vortex is set to bring a 'large supply of cold air' to North America in mid-February as a ...

Experts have shared their insights on the 'complex' weather phenomenon amid fears it could leave vast swathes of the country ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

A lobe of the polar vortex, a stormy ring that typically keeps the coldest air locked up near the North Pole, will dip southward into the United States this weekend into next week. Polar air ...

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades ... be held inside the United States Capitol Rotunda.

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

33,530 people played the daily Crossword recently. Can you solve it faster than others?33,530 people played the daily Crossword recently. Can you solve it faster than others?

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...