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.

The Polar Vortex Is Collapsing — Here's What That Means for Your Winter Weather

Blast of cold air to bring wintry feel, snow to some in Eastern U.S. - The Washington Post

How the polar vortex could bring winter back after temperatures warm - The Washington Post

Extreme cold still happens in a warming world – in fact climate instability may be disrupting the polar vortex – Queen City News

The polar vortex, briefly explained - Vox

What is the polar vortex, and how does it change the weather? - The Washington Post

What's a polar vortex? - Vox

Extreme Cold Still Happens in a Warming World – In Fact Climate Instability May Be Disrupting the Polar Vortex - The Good Men Project

Polar vortex to send arctic blast deep into US later this week

Science Says: Get used to polar vortex outbreaks

The polar vortex is coming. Here's what that means — and how cold it could get. - The Washington Post

Remarkable Polar Vortex Could Send Temps Plummeting Again — Best Life

Northeast faces 'ferocious Arctic blast' and wind chills near minus-60 - The Washington Post