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

A rare "daughter polar vortex" is set to plunge millions of Americans into freezing temperatures as a prolonged period of ...

Daughter polar vortices' could bring snow and ice to parts of northern, central, and eastern United States later this month, ...

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

A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of ...

“Like, really, really far south.” The potentially life-threatening cold is due to a disrupted polar vortex. The FOX Forecast Center said a lobe of the polar vortex will dip to the south and ...

The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region up north. This ...

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

The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

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

The cold temperatures are coming from a not uncommon expansion in the Polar Vortex, which are counter-clockwise rotating air currents that typically hang over the Arctic.