A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

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

A rare winter storm is getting set to slam the Gulf Coast and South, with cities from Texas to Florida under Winter Storm Warnings.

As a slug of polar vortex-fueled arctic air overtakes the eastern two-thirds of the U.S. next week, a storm system could bring snow, sleet and freezing rain to places deep in the heart of Texas, but the forecast isn’t a lock just yet.

The colder-than-normal temperatures in Houston are part of a larger pattern of Arctic air sweeping through Texas and much of the southern United States.

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

A winter storm that is expected to begin in Texas next week could end up bringing snow and ice to parts of Florida.

DALLAS - Most of the nation is in good shape on Wednesday and will be warmer on Thursday. The arctic air is coming, but not yet. The center of the polar vortex is not coming to Texas, but it will funnel cold air down from the North Police, so it will keep us well below average next week.

when freezing temperatures in Texas lasted more than eight days, causing widespread power outages and killing more than 200 people. Regardless of whether the polar vortex contributes to a specific ...

The unseasonable chill that has swept through the eastern half of the US defies last year's mild winters and the South's typical warmth.

Unprecedented snowfall hits the U.S. South. Discover how this winter storm is setting new records and causing rare blizzard conditions.