The polar vortex at the North Pole made a sudden U-turn March 4. The jet stream, which normally travels from west to east in ...

When the polar vortex is spinning and strong in March, it can still help drive blobs of cold, arctic air south in the Great ...

This weather phenomenon is an integral part of forecasting as the swirling current of air ebbs and flows and eventually falls ...

Atmospheric scientists were surprised earlier this month to notice that the Arctic's polar vortex reversed its trajectory as it began spinning in the opposite direction. What's more: It has yet to ...

The polar vortex is most prominent during winter months and extends into the stratosphere — the second layer of the atmosphere up to around 30 miles (50 kilometers) above the surface. The vortex ...

The polar vortex rages in the arctic during the winter, producing winds up to 150 miles per hour. But when that vortex weakens, arctic air escapes to more southerly latitudes, which creates ultra ...

You heard that right; the polar vortex is spinning in the opposite direction. It actually happens more than you might think. As Canadians, we are very familiar with the term ‘polar vortex.’ ...

Atmospheric scientists were surprised earlier this month to notice that the Arctic's polar vortex reversed its trajectory as it began spinning in the opposite direction. What's more: It has yet to ...

Earlier this month, a sudden atmospheric warming event caused the Arctic's polar vortex to reverse its trajectory. The swirling ring of cold air is now spinning in the wrong direction, which has ...

As Canadians, we are very familiar with the term ‘polar vortex.’ We are also familiar with its effects on Canadian weather when it ‘acts up.’ While the polar vortex is a year-round phenomenon, we tend ...