Polar vortex to bring bone-chilling temps across US

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Polar vortex to descend deep into the U.S. to deliver icy Arctic blast

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Polar Vortex bringing the coldest temperatures of the year

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Polar vortex brings dangerous cold

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Polar Vortex Shoots South, Aims At Much of Canada Over the Next Few Days

(3:49)

Polar vortex brings bitter wind chills to GTA

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'Polar vortex' to bring dangerous cold to Metro Detroit

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Polar Vortex - How it's formed \u0026 When it is dangerous | In-depth Explained

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Answering \

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Polar Vortex To Bring Dangerous Cold To More Than 30 States

(3:19)

This Canadian Town Will Experience Days of -50 Windchills

(1:20)

Polar vortex coming to St. Louis area: Here's how cold it will get

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Checking in with Denver airport as polar vortex moves through the city

(2:53)

B.C. Facing the Coldest Air Mass of the Season, Thanks to Polar Vortex

(1:28)

Polar Vortex To Send Temperatures Tumbling Below Freezing For Majority Of US

(2:42)

Canada's National Forecast: Polar Vortex Spreads Across Canada Bringing Dangerous Cold | #WeatherAM

(3:50)

The polar vortex dips into the Twin Tiers

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What is the polar vortex?

(2:19)

Wintry Mix Makes Its Way Into Ontario, Followed by a Polar Chill

(1:47)

What is the polar vortex?

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