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

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 ...

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

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

The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”.  The icy air that has particularly affected the central and eastern United States is ...

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

The National Weather Service has advised the public to check the forecast for their area on weather.gov to ensure they are dressed appropriately. The agency said that while there is no cause to be ...

Temperatures are dropping in Texas on New Year's Eve ahead of next week's polar vortex, which will bring snowfall to much of the United States.

As we continue to warm moving into February, it appears latest trends suggest a classic "what goes up, must come down" type ...

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 ...

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