"An Arctic air mass is expected to plunge into the Central U.S. this week, with high confidence for widespread, ...

The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a ...

The National Weather Service has issued extreme cold warnings for millions of Americans from the Canadian border to Texas.

Winter, which is warming faster than any other season for much of the US, seems to be making a comeback for the first time in ...

WASHINGTON—The polar vortex hit its peak across much of America on February 19, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been warmer ...

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point ...

LOUISVILLE, Ky. (AP) — Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the northern ...

The polar vortex is not synonymous with cold snaps, but when it slides toward the United States, the polar jet stream can ...

After a winter storm brings snow, ice to several states, Mississippi will see Arctic air from the polar vortex for a few days ...

The latest arctic blast will move into the northern Rockies and northern Plains Saturday and spread to the central and ...

The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.

A cold weather advisory is in effect until noon Tuesday, with wind chills ranging between minus 15 and minus 25 before plummeting to minus 10 overnight in outlying areas. But a warm-up is on tap for ...