{"id":675018,"date":"2026-11-04T20:12:08","date_gmt":"2026-11-04T20:12:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/675018\/"},"modified":"2026-11-04T20:12:08","modified_gmt":"2026-11-04T20:12:08","slug":"the-polar-vortex-is-about-to-go-haywire","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/675018\/","title":{"rendered":"The polar vortex is about to go haywire"},"content":{"rendered":"

Something \u201cunprecedented\u201d is happening in the atmosphere: the Arctic polar vortex<\/a>, a spinning mass of air high above the North Pole, is collapsing. This disruption isn\u2019t unusual, but it is happening at what may be the earliest point in the year on record, climate experts say.<\/p>\n

Every winter the polar vortex strengthens in the stratosphere, a layer of the atmosphere that stretches from about 10 to 30 miles above Earth\u2019s surface, explains Andrea Lopez Lang, an associate professor of atmospheric and oceanic sciences at the University of Wisconsin\u2013Madison.<\/p>\n

Like a fast-spinning top, the polar vortex\u2019s tight rotation helps keep cold air trapped over the pole<\/a>, says Judah Cohen, a climatologist at Massachusetts Institute of Technology. But if the vortex is disrupted, it can push cold air down to other parts of the world, such as North America and Europe.<\/p>\n

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That disruption is happening far earlier than expected, the experts say.<\/p>\n

\u201cAs a weather fan, this is a big event because it\u2019s so unprecedented,\u201d Cohen says. \u201cIt\u2019s a lot of excitement. Everybody\u2019s hair is on fire in the climate or meteorologist community.\u201d<\/p>\n

In the Northern Hemisphere, the polar vortex typically begins forming in the late summer and reaches \u201cpeak intensity\u201d in December and January, Lopez Lang says. Waves in the atmosphere known as \u201cRossby waves\u201d can cause the polar vortex to wobble and weaken. During a big polar vortex disruption\u2014what scientists call a \u201csudden stratospheric warming\u201d\u2014the vortex can drift, stretch, split into multiple swirls or change direction.<\/p>\n

This indirectly influences the polar jet stream<\/a>, a band of wind that circles the entire polar region in the troposphere\u2014the lowest layer of the atmosphere, where most of our weather happens.<\/p>\n

Polar vortex disruptions normally occur deep into the winter, Cohen says, so a sudden stratospheric warming in November is unusual. Before now, the earliest it had ever been recorded<\/a> was November 28 in 1968.<\/p>\n

What that means for our weather forecast in the U.S. is still unclear. It\u2019s an El Ni\u00f1o year<\/a>, so meteorologists had expected winter in North America to be relatively mild. A polar vortex split could bring cooler temperatures across the continent in the coming weeks, but exactly when and where that will happen\u2014and whether it will happen at all\u2014remain unanswered.<\/p>\n

\u201cIt looks like we\u2019re going to have a disruption,\u201d Lopez Lang says. \u201cWhere everything sets up is still in question.\u201d<\/p>\n

Not all polar vortex disruptions look the same. \u201cYou have minor and major sudden stratospheric warmings,\u201d Cohen adds. This could end up being a \u201cminor\u201d event, and \u201ceverybody will forget about it,\u201d he says. \u201cOr it will be major, and then it\u2019ll go in the record books.\u201d<\/p>\n

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