A "Textbook" Sudden Stratospheric Warming Event Appears To Be Unfolding

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A "Textbook" Sudden Stratospheric Warming Event Appears To Be Unfolding

Meteorologists on social media channel X are posting weather models about the increasing threat of a so-called sudden stratospheric warming (SSW) over the Arctic, which could unleash wintry weather across the eastern half of the US in the new year. 

"A textbook sudden stratospheric warming event looks to be unfolding," private weather forecaster BAM Weather (BAMWX).

Judah Cohen, Ph.D. and an atmospheric and environmental scientist who studies the polar vortex, told FOX Weather an SSW event takes "about two weeks for the effects of the sudden stratospheric warming to impact our weather." 

Cohen expects that cold air will pour into the Lower 48 in the new year, although the specifics of the event remain uncertain. 

Yale Climate Connections wrote in a recent note, "The odds of a snow-favoring East Coast cold wave will be boosted if a sudden stratospheric warming happens to develop in January." 

"Sudden stratospheric warmings involve a rapid and dramatic rise in temperature — as much as 80 degrees Fahrenheit — within the polar stratosphere, together with a disruption in the stratospheric polar vortex. That disruption typically either splits the vortex or pushes it southward, along with associated Arctic air masses," the weather service ran by Yale Center for Environmental Communication. And it's the splitting of the polar vortex that delivers the blast of Arctic air to the Lower 48 region. 

Cohen posted, "All models now agree on a Polar Vortex stretch. Major warming still possible." 

Sometimes all you need is a good stretch. Looks to me that the ECMWF has capitulated to the Americans (GFS & me), all models now agree on a #PolarVortex stretch. Major warming still possible. I stand by my implications with what I wrote in yesterday's blog https://t.co/Gg8N2KHLUk pic.twitter.com/wLenj5yZt8

— Judah Cohen (@judah47) December 21, 2023

Meteorologist Mark Margavage said, "The 12z EPS Control run is showing the granddaddy of all Polar Vortex disruptions with a major Sudden Stratospheric Warming Event and split of the PV. This would be the most impactful scenario of the 4 presented today." 

The 12z EPS Control run is showing the granddaddy of all #PolarVortex disruptions with a major Sudden Stratospheric Warming Event (#SSWE) and split of the PV.
This would be the most impactful scenario of the 4 presented today. @PvForecast @judah47 @TonyPannWBAL #wxtwitter #wxX https://t.co/XezMHPHAYv pic.twitter.com/DsIP46AwYe

— Mark Margavage (@MeteoMark) December 23, 2023

BAMWX forecasts "a **late Jan into Feb** legit winter pattern for the central/eastern US!"

A text book sudden stratospheric warming event looks to be unfolding esp. if you ask the EPS data.

My interest is increasing for a **late Jan into Feb** legit winter pattern for the central/eastern US!

The wild card is can this SPLIT the #polarvortex?

It certainly displaces… pic.twitter.com/y8OFOmElWE

— BAM Weather (BAMWX) (@bamwxcom) December 21, 2023

"It appears as if there could be a legitimate risk developing for a mid to late Jan major blast of Arcitic air and stormy weather," BAMWX noted, adding, "Exact timing is still a bit up for grabs but very encouraging if you're a lover of snow and cold." 

Merry #Christmas Eve.

My gift to you is a day 14 #PolarVortex total split and breakdown.

It appears as if there could be a legitimate risk developing for a mid to late Jan major blast of #Arcitic air and stormy weather.

Exact timing is still a bit up for grabs but very… pic.twitter.com/Y6y3gtR87I

— BAM Weather (BAMWX) (@bamwxcom) December 24, 2023

"Interest rising for cold lovers in Jan with the polar vortex coming under attack in the next couple of weeks. Possible Sudden Stratospheric Warming?" weather forecasting company MetDesk said. 

Take a look at how December is panning out across the planet so far. Mixed in Europe with cold in the NE but mild for N America. Interest rising for cold lovers in Jan with the polar vortex coming under attack in the next couple of weeks. Possible Sudden Stratospheric Warming? pic.twitter.com/la6xP9Hnzf

— MetDesk (@metdesk) December 20, 2023

The combination of a potential SSW and an El Niño winter in the Mid-Atlantic, which typically leads to wetter-than-usual conditions, might suggest the next major snowstorm is approaching in the new year. 

 

Tyler Durden Sun, 12/24/2023 - 16:00 Tyler Durden Zero Hedge http://www.zerohedge.com/fullrss2.xml

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