The polar vortex is cyclical high-altitude winds that blow counterclockwise around the pole experiencing winter in the stratosphere, the next layer of atmosphere above the lowest, the troposphere.

Miles above the Earth, two bands of fast-moving air – the polar jet stream and the stratospheric polar vortex – sometimes tango together to influence weather in the northern hemisphere.

A look at what scientists say about the polar vortex and climate change.

As we continue to warm moving into February, it appears latest trends suggest a classic "what goes up, must come down" type of event very soon with the next split of our polar vortex.

The intense cold snap about to settle over most of Canada and the U.S. has been dubbed a “polar vortex’, but Environment Canada Senior Climatologist David Phillips says it could just as easily ...

Siberian air is descending on Canada. Here's what to know about the 'polar vortex' Winter was cancelled in Canada last year, but there is a major cold snap coming that will extend almost all the ...

If the Polar Vortex dips southward, northern Ohio could experience periods of extreme cold, with temperatures potentially reaching well below freezing for extended stretches.

Should the polar vortex remain weak through the winter months, we can anticipate some bitterly cold periods to take place this winter season. Remember, the polar vortex doesn't technically move into ...

A new simulation shows that an El Niño-like climate pattern begins near New Zealand and Australia, and can trigger temperature changes across the Southern Hemisphere.

The polar vortex circling the Arctic is swirling in the wrong direction after surprise warming in the upper atmosphere triggered a major reversal event earlier this month.