The polar vortex is always around. It is a channel of strong winds high up in the atmosphere that circles the poles. One over ...

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Americans have been warned to brace for more winter storms as Arctic winds are set to dump more ice and snow amid freezing temperatures.

A disruption in the polar vortex is about to send an Arctic air mass from Siberia as far south as Florida. Yes, Siberia—and ...

Satellites orbiting the Earth have captured the effects of a "polar vortex" on camera, as swathes of the U.S. are gripped by Arctic conditions. One image taken by the National Environmental ...

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Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.

As opposed to staying further north and maintaining a stable flow, in the event of a disruption in the polar vortex, the polar jet stream will often develop a wavy shape with dips and ridges.