More than 95 million people were facing gripping cold Tuesday as a polar vortex sent temperatures plunging to record levels, closing schools, bursting pipes and forcing communities to set up more ...

The arctic outbreak that has enveloped the central U.S. is hitting its peak Thursday as frigid temperatures continue to ...

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Extreme cold warnings were issued for an 11-state swath of the U.S. stretching from the Canadian border to Oklahoma and ...

But at times some of the vortex can break off or move south, bringing unusually cold weather south and permitting warmer weather to creep up north.

Severe weather alerts are issued as a polar vortex brings life-threatening cold to the Rockies and northern Plains.