Find out why Florida, Louisiana and other Souther states in the U.S. are experiencing a rare, historic snowstorm.

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

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

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

The vast majority of Americans are about to get an extended taste of frigid Siberian weather. Another polar vortex disruption ...

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 comet not seen in the last 80,000 years is putting on a show over Alaska skies this week. Viewers are sending in amazing photos capturing the celestial event. A landslide in Ketchikan Sunday night ...

DALLAS — An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some other parts of the U.S. hit by the plunging polar vortex this ...

A powerful polar ... from Alaska through the Midwest and extending deep into the Southeast. Many Southern states that rarely face winter storms are now under weather warnings as the vortex ...

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 in its frigid grip ...

NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma ...