Disrupted polar vortex unleashing colder weather in eastern U.S. - The Washington Post
In pictures: Polar vortex strikes North America - BBC News
When will the US feel the impact of the polar vortex? | kare11.com
40) You can blame the polar vortex for these sub-zero temperatures
Over 20 dead in US polar vortex, frostbite amputations feared
Polar Express: Arctic outbreak to invade parts of US
Polar vortex 2022: What is it and how does it affect winter weather
Weakening polar vortex may yield longer, harsher winters in North America
A warming wave will start in the stratosphere, with the Polar Vortex being temporarily displaced, as it heads towards North America with cold weather » Severe Weather Europe
Polar Vortex in a nutshell - The Statesman
In pictures: Polar vortex strikes North America - BBC News
What Is A Polar Vortex? Your Freezing Cold Questions Answered : NPR
Analysis: Polar Vortex collapse causes heavy winter for North America and the Nordics - Kjeller Vindteknikk
What's the polar vortex? – DW – 01/08/2014
Polar vortex could bring rare May snow to U.S. East | PBS NewsHour
Arctic Weather Plunges into North America
What is the polar vortex – and how is it linked to climate change? | US weather | The Guardian
The U.S. is about to get a potent polar vortex blast | Mashable
Polar vortex' makes 187 million in US shiver
US weather latest: USA death toll rises as polar vortex delivers snow and extreme cold | Weather | News | Express.co.uk
What is the 'polar vortex'?
Polar vortex: Best photos of US 'big freeze' | The Independent | The Independent
