What is the Polar Vortex?

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What is the Polar Vortex?
Polar Vortex - How it's formed & When it is dangerous
What is the Polar Vortex?
The polar vortex is coming—and raising the odds for intense winter weather
What is the Polar Vortex?
The Polar Vortex is strengthening. Should we be concerned? – Weather News
What is the Polar Vortex?
The polar vortex is about to split into 3 pieces
What is the Polar Vortex?
The Polar Vortex Winter of 2013/14 Verisk's Atmospheric and Environmental Research
What is the Polar Vortex?
Polar vortex: Deep meanders in vortex linked to global warming.
What is the Polar Vortex?
What Is the Polar Vortex? NOAA SciJinks – All About Weather
What is the Polar Vortex?
What is the Polar Vortex?
What is the Polar Vortex?
WEATHER WORKSHOP: What is the Polar Vortex?
What is the Polar Vortex?
Understanding the Arctic polar vortex
What is the Polar Vortex?
What is the 'polar vortex'?
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