The University of Wisconsin-Madison faced a frigid start to the semester, with the polar vortex expected to bring more icy ...

One of Ontario's worst polar vortices in over a decade struck the Waterloo Region on Jan. 20. Temperatures in certain areas ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A rare "daughter polar vortex" is set to plunge millions of Americans into freezing temperatures as a prolonged period of ...

And if the polar vortex is to blame. First, a quick refresher on the polar vortex. The polar vortex is a region of very strong winds that form a circle around the North Pole. The vortex is located ...

At the same time we go into a touch milder southwest flow, the polar vortex will still be churning away over northeast Canada. I don’t expect a full onslaught of the polar vortex to shift south ...

The big winter weather challenge has now come and gone in the form of last week’s polar vortex. The Eastern railroads got doubly lucky as they also had to contend with Winter Storm Enzo, a rare ...

You also notice the end of the forecast indicates the polar vortex may be making another swipe at Michigan in mid-February. At that time of year it can still be a very cold outbreak. However it ...

Elsewhere, a displaced lobe of the polar vortex has brought an unrelenting chill to large parts of the contiguous United States. About 30 states have experienced temperatures well below average ...