The Polar Vortex is strengthening. Should we be concerned? – Weather News
The U.S. is about to get a potent polar vortex blast | Mashable
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
The polar vortex splits, sending frigid air howling into the U.S., Europe
What is the 'polar vortex'? | Fox Weather
Polar vortex' makes 187 million in US shiver
As polar vortex lingers, parts of U.S. set for record lows - Oman Observer
Colder than Antarctica: deadly polar vortex slams US
Polar vortex: Bitter cold wave could be on its way from the Arctic
Polar Vortex' to Return Across the US This Week, Federal Agency Warns | The Epoch Times
Polar Vortex Arm Looks to Visit North America Next Week
Polar Vortex Setting Up to Bring Cold Weather Back to Central US, Canada
Weakening polar vortex may yield longer, harsher winters in North America
Polar Vortex Building in North America
What is the polar vortex – and how is it linked to climate change? | US weather | The Guardian
Polar vortex 2019: Who pays if the cold weather damages your home, car
Polar vortex: Best photos of US 'big freeze' | The Independent | The Independent
Polar Vortex Causes Midwest States Of Emergency As Cold Pushes Farther South : NPR
What Is the Polar Vortex? | NOAA SciJinks – All About Weather
Polar vortex `just sort of evaporates' and U.S. Midwest warms up | in-cyprus.com
Polar Vortex Spreading Arctic Cold Next Week
Polar vortex brings extreme cold, winter weather to central US | wltx.com
What's the polar vortex? – DW – 01/08/2014
Polar Vortex' Sends Shivers Across U.S. - The New York Times
The 2013-2014 polar vortex adds data points to the books – Climate Change: Vital Signs of the Planet
Polar vortex' hits northern USA - ABC News
