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

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

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...

A rare and exciting sight has captured the attention of Warren County residents. Trumpeter swans, the largest swans native to ...

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

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

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 the nation and ... single digits in the northern Plains and ...

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

Here's the latest on the winter storm.A historic winter storm is poised to produce potentially record-breaking snows from ...

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 the nation and ... extreme danger associated with the cold. In ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar ...

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