How the polar vortex could deliver one last blast of wintry weather - The Washington Post

A disruption of the vortex could set off a chain reaction reversing the mild weather pattern in a few weeks.

Polar vortex could unleash winter wallop by January - The Washington Post

What's a polar vortex? - Vox

Polar vortex to unleash frigid Arctic blast - CBS News

Polar vortex expert says another arctic blast has a 'good chance' of happeneing in February

How 'topsy turvy' polar vortex brought record freeze to Texas

Polar vortex is splitting because of a sudden stratospheric warming event - The Washington Post

An arctic blast could snowball into a bomb cyclone. Here's what that means

Arctic blast to send north-central US into deep freeze

In the Media – Simon H. Lee

How does the polar vortex lead to Arctic outbreaks?