But what is a polarvortex? The polarvortex is the jet stream above the Arctic Circle. It is very cold. Most of the time it stays up there, but there are circumstances where it can dip down ...
The coldest weather of the season to date will be due to a phenomenon called a polarvortex, an upper-level jet stream that typically circulates around both the North and South Poles, but can ...
The polarvortex is an enormous ring of powerful winds ... pushing 30-40 degrees below normal for tens of millions of people across NorthAmerica. Brutally cold days and locally historic low ...
The mere mention of the term "polar ... circumpolar vortex is a counterclockwise-spinning (northern hemisphere) swirl of super-cold air in the upper atmosphere that sits atop the North Poles.