Thanksgiving May See Early Polar Vortex Breakdown

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The polar vortex is breaking down unusually early after a sudden stratospheric warming event, which could send Arctic air into the US this weekend and again over Thanksgiving, Newsweek reports. AccuWeather’s long-range forecaster called it an unprecedented situation for November, since these events usually happen in January or February. The cold clashes with El Niño’s expected warm, dry northern winter and could bring the first snow from the Northern Rockies to the Great Lakes. The cold may be shorter-lived without Canadian snow cover.  Disclosure: This video contains stock footage and content created or enhanced using AI-assisted tools.

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00:00The polar vortex is breaking down unusually early, and it could chill Thanksgiving.

00:04It starts with a sudden stratospheric warming high above the Arctic.

00:08That warming disrupts the winds that normally keep frigid air locked up north.

00:13When those winds weaken, Arctic air can spill south into the U.S.

00:17These events usually happen in January or February.

00:20This one could bring cold weather as soon as this weekend.

00:23Another round could arrive over Thanksgiving weekend and into early December.

00:27Some areas could see their first snow, from the northern Rockies to the Great Lakes.

00:32That clashes with El Nino, which usually brings warmer, drier conditions to the northern U.S.

00:38Without much snow in Canada yet, the cold may not last as long.

00:41But after a mild fall, the drop could feel sudden.

00:45So it might be time to dig out those winter coats.

00:47Disclosure. This video contains stock footage and content created or enhanced using AI-assisted tools.

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