The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.

Another massive winter storm is forecast to pummel the southern and eastern U.S., with impacts from Texas to the Carolinas.

The severe weather, spanning from the Midwest to Washington DC, is a "potential disaster", says one forecaster.

The NWS has issued warnings this weekend after a powerful polar vortex plunged temperatures nationwide during the week.

The wintry wallop comes as a blast of Arctic air will invade much of the Midwest, Great Lakes and northern United States for ...

Portions of east central, north central, northwest, and south central Kentucky are under a winter storm watch from late ...

A severe winter storm has hit the United States, prompting travel and work disruptions from Kansas City to Washington.

A new winter storm will bring rain and some of the coldest temperatures of the season to the southeastern United States, ...

A polar vortex that has hit much of the U.S. with ice and snow has dealt a glancing blow to Florida and its manatee ...

Frigid temperatures across a large US area complicated efforts Tuesday at restoring power and clearing roads after a major ...

The huge winter storm that could bring the heaviest snowfall and coldest temperatures in over a decade, with tens of millions ...

The NWS has issued the warnings as a powerful polar vortex continues to make temperatures plunge nationwide this week.