Record-breaking cold clobbers two-thirds of the U.S. as polar vortex descends from Arctic - AOL

Record-breaking cold clobbers two-thirds of the U.S. as polar vortex descends from Arctic - AOL

1. Record-breaking cold clobbers two-thirds of the U.S. as polar vortex descends from Arctic  AOL
2. Chicago Weather: What Exactly Is The Polar Vortex?  CBS Chicago
3. Deadly polar vortex sweeping Midwest with wind chills as low as minus 65  CBS This Morning
4. Arctic cold front with freezing temperatures heading Philly’s way  Curbed Philly
5. Polar vortex: What is the 2019 polar vortex weather event and is global warming to blame?  CBS News
6. View full coverage on Google News

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