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

A significant meteorological event is poised to impact vast regions of the United States. The polar vortex, a large area of low pressure and cold air surrounding the Earth’s poles, is expected to ...

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

As the Arctic rapidly warms, the temperature difference between the polar region and lower latitudes decreases, which weakens ...

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

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.

When a polar vortex arrives, it brings frigid winds from the north pole deep into the United States. The cold air can settled ...

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 ...