The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”.  The icy air that has particularly affected the central and eastern United States is now descending as far as the Gulf Coast.

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

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.

As the West Coast braces for fiery winds and the Northeast shivers under a polar vortex, the nation finds itself caught between two extreme weather fronts.

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.

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.

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.