What is the Polar Vortex?

Everything you need to know: The polar vortex, Earth

Climate graphic of the week: Polar vortex sends Texas into deep freeze

Polar Vortex - How it's formed & When it is dangerous

Scientists observe rapid ozone fluctuations over the Antarctic polar vortex edge area

The 'polar vortex' may appear in the US in January

What is a polar vortex?

Polar vortex unleashes bitter cold

Polar Vortex moving off the top of the globe, what that means for Great Lakes region

N.J. weather: What is the polar vortex, and could it boost our snow chances?

What is the polar vortex, and how does it contribute to cold snaps?

Polar-Vortex Event Will Bring Cold Temperatures, Snow to US Northeast

Why Polar Air Keeps Breaking out of the Arctic

Here's what you need to know about the polar vortex

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

The polar vortex splits, sending frigid air howling into the U.S., Europe