A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this weekend and next week.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

Here is what is and isn't a polar vortex when Colorado receives cold like what is forecast for the holiday weekend.

Dozens of US states will endure the lowest temperatures they have felt in years next week as a polar vortex brings ...

Any sort of wind along with the bitter cold will make for frostbite in as little as 15 to 20 minutes in the incoming arctic ...

People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, ...

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

Schools as far south as El Paso, Texas, closed due to a polar vortex that has brought historically low temperatures and ...

NORFOLK, Va. (AP) — A developing winter storm threatens to drop snow, sleet and freezing rain on parts of Texas, Oklahoma and ...