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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Atmospheric scientists were surprised earlier this month to notice that the Arctic's polar vortex reversed its trajectory as it ...

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 ...

A researcher expects the polar vortex to strengthen over the next two weeks. This has a big impact on our day-to-day weather here in the Great Lakes region and even the Northeast. Judah Cohen, ...

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 the Arctic, reversed for 21 days. This rare event is known as sudden ...

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 ...