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 ...

WASHINGTON — Get ready for extreme cold weather in D.C. and most of the U.S. over the next few days. The polar vortex has ...

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

A historic winter storm is poised to produce potentially record-breaking snows from coastal Texas to northern Florida late ...

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 dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar ...

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

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

Although these cozy knits are undeniably great for going outside in areas where winters don't routinely drop below freezing.

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 ...