What is the polar vortex? Frigid air plunges deep into the US

From Associated Press.

Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering. Read more: https://bit.ly/3PrYBl8

#snow #arctic #weather #news #polarvortex

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