The extreme weather is being caused by the polar vortex, an area of cold air that circulates around the Arctic.

Over 250,000 homes and businesses in central and the southern U.S. were without power on Monday, data from PowerOutage.us ...

Over 250,000 homes and businesses in central and the southern U.S. were without power on Monday, data from PowerOutage.us ...

The Lehigh Valley could see several inches of snow Sunday night into Monday, but will escape the worst of a winter storm ...

Millions should prepare for disrupted travel and winter conditions as a fierce storm is set to bring ice, snow and freezing ...

Currently, a winter storm watch is in effect for Sunday and Monday in Central Indiana, but what does that actually mean? What ...

A winter storm watch is in effect through Monday, but what does that actually mean? What about a winter storm warning?

A winter storm system is expected to bring up to eight inches of mixed precipitation to the St. Louis area, with areas north ...

The National Weather Service issued an updated winter storm watch at 10:05 a.m. on Saturday valid from Monday midnight until ...

On Saturday at 3:40 a.m. a winter storm watch was issued by the National Weather Service valid from Sunday 10 p.m. until ...

The NWS Greenville-Spartanburg SC issued a winter storm watch at 3:18 a.m. on Saturday valid from Sunday 1 p.m. until Monday ...

A winter storm watch was issued by the NWS Blacksburg VA on Saturday at 2:49 a.m. valid from Sunday 7 a.m. until Monday 7 p.m ...