As we look toward mid-December into January, the door is opening for some potentially significant winter weather.

A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it ...

It has been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

It's been a warm autumn, so far. But the polar vortex is forecast to change unusually early, and that could impact your ...

Environment Canada meteorologist Steven Flisfeder says a polar vortex is a low-pressure system that is always present at ...

Meteorologists are observing the beginnings of a polar vortex in much of the U.S. But how does this impact Thanksgiving day ...

A wide swath of the western U.S. may be in for below-average temperatures as forecasts suggest an Arctic blast is looming.

A growing body of research indicates that polar vortexes are likely becoming more frequent due to the climate crisis.

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could ...

The polar vortex could be disturbed in a way that hasn't happened this early in 25 years. You’d be forgiven for being ...