The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

This blast of frozen temperatures is tied to a polar vortex... but what is that? Air spins around the notoriously cold North and South Poles. When the air is spinning fast, it's stable, but when it is ...

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

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

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

13 degrees to 31 degrees: Your home should be a warming center for your child. Children should come in every 20 to 30 minutes ...

Evanston residents should brace for the coldest weather of the year next week, with temperatures dipping below zero for days ...

Some of the coldest air that we've seen so far this winter looks to be paying the Garden State a visit early next week.

ANNAPOLIS, Md. (AP) — A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend kept much of the country east of the Rockies ...

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar vortex affects the weather.

An area stretching from Texas to Tennessee braced Wednesday for the possible arrival of freezing rain and snow even as some ...

NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in ...