A disruption of the vortex could set off a chain reaction reversing the mild weather pattern in a few weeks.
Polar vortex expert says another arctic blast has a 'good chance' of happeneing in February
A year later: A look at what caused February 2021′s Arctic blast, waves of wintry weather
Brutal' Arctic blast expected to bring frigid temperatures to North America, US weather
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Science Says: Get used to polar vortex outbreaks
How climate change is easing extreme cold snaps - The Washington Post
The polar vortex is coming. Here's what that means — and how cold it could get. - The Washington Post
Polar Vortex Could Bring Severe Winter Weather to the U.S.
Polar vortex coming in November: Arctic blast to central, eastern U.S.
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