Parts of Canada will be bitterly cold this weekend — but don't call it a polar vortex
A rush of Arctic air will plunge parts of North America into bitter cold this weekend, bringing heavy snow, strong winds and ...
Calgary Herald7d
Calgary weather to be drastically colder by the weekend thanks to polar vortex
Kevin MacKay, a meteorologist with The Weather Network, said this weather system is known as a polar vortex, saying it spends ... system — known as an Alberta Clipper — to trigger a change ...