'Polar vortex' may blanket US with arctic weather in January WTTE

A Sudden Stratospheric Warming is coming, collapsing the Polar Vortex and potentially impacting

The "warming" refers to the dramatic increase in temperature (~50-70 degrees F in a few days!) over the polar stratosphere during these events (see the figure below). These events occur roughly every other year in the Northern Hemisphere.

What’s going on with the polar vortex, and is an Arctic outbreak on the

Published December 5, 2023 Comments: 65 We are excited to announce that NOAA Climate.gov, home of the highly popular ENSO Blog, is venturing into a colder, darker, and windier corner of the atmosphere with the new Polar Vortex Blog.

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When we last wrote two weeks ago, the forecasts suggested that the stratospheric polar vortex would continue to weaken and warm into January. Though there were a few days around the end of December where forecasts moved closer to predicting a full reversal of the west-to-east vortex winds that comprise a major "sudden stratospheric warming", the ingredients did not fully come together.

Major sudden stratospheric warming likely, raising risk of severe UK cold

Sudden stratospheric warming events can be caused by large atmospheric waves in either the stratosphere or the troposphere. Planetary waves have ridges and troughs like ocean waves, but span huge distances in the atmosphere. And just like waves crash at the beach, atmospheric waves can "crash" too, both in the horizontal and vertical directions.

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Sudden stratospheric warmings (SSWs), breakdowns of the winter stratospheric polar vortex, are one such event.. (2023) Extreme stratospheric wave activity as harbingers of cold events over.

Major Warming Disrupts Polar Vortex Cold West, 6 Weeks of Extreme WX for U.S. Ahead

February 9, 2023 at 6:30 a.m. EST Air temperature anomalies in the lower stratosphere next week as simulated by the American GFS model. (WeatherBell) 6 min Share Several miles above the North.

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Sudden stratospheric warming (SSW) describes an atmospheric-variability phenomenon at a daily-to-monthly scale where temperature in the middle stratosphere (about 30 km or 10 hPa) increases rapidly ( >30 to 40 K) within a couple of days in sub-polar and polar regions (McInturff, 1978; Butler et al., 2015; Baldwin et al., 2020).

'Polar vortex' may blanket US with arctic weather in January WTTE

2.3 Specification of Sudden Stratospheric Warming and Final Warming Events We identify SSW events that occurred in the real atmosphere using the criterion from Charlton and Polvani ( 2007 ), who specify the SSW onset day via the reversal of the zonal mean zonal wind at 60°N and 10 hPa ( , a measure for the polar vortex strength).

Winter 2023/24 Chat and Discussion Page 91  Winter Weather Discussion

A sudden stratospheric warming event may disrupt the polar vortex Feb 10, 2023 - Energy & Environment An event high above the Arctic may turn winter sharply colder in U.S., Europe Andrew Freedman , author of Axios Generate Air temperature anomalies in the stratosphere Feb. 17 as simulated by the American GFS ensemble. Image: WeatherBell.com

‘Sudden stratospheric warming’ could make for more bitter cold, winter weather chances down the road

» Yale Climate Connections Eye on the Storm How will El Niño affect the U.S. this winter? Strong El Niño events like this one have classic calling cards, but surprises still happen — especially on a warming planet. by Bob Henson December 12, 2023

Met Office verdict on 'Beast from the East snow blast' tipped to return

Sudden Stratospheric Warming becoming likely, could slip us back into winter Publish Dates: 06 Feb 2023 Sources: Michigan Live (Mark Torregrossa) Resource Link: https://www.mlive.com/weather/2023/02/sudden-stratospheric-warming-becoming-likely-could-slip-us-back-into-winter.html

'Sudden Stratospheric Warmings' in 2023 could trigger winter

The Sudden Stratospheric Warming event (SSW) has left a strong mark on the Polar weather circulation and the atmosphere. As a result, a significant high-pressure blocking system is building over Greenland and will impact the entire North American region and Europe in the coming weeks.. El Nino event signal is getting stronger for 2023. When.

Will a Sudden Stratospheric Warming Event Save a SnowStarved North

(WeatherBell) Temperatures at the high altitudes above the North Pole are soaring, jumping up to 50 degrees in barely a week. The so-called "sudden stratospheric warming" is disturbing the.

Sudden stratospheric warming takes place, with signs of UK cold on horizon

Stratospheric sudden warmings (SSWs) are global-scale meteorological events driven by the dissipation of vertically propagating planetary waves originating in the troposphere (Butler et al., 2015; Matsuno, 1971). SSW events are characterized based on the changes that occur in the stratosphere, including a rapid increase in polar temperatures.

'Sudden Stratospheric Warmings' in 2023 could trigger winter

Other times, the vortex winds "break down" and reverse direction entirely (aka "sudden stratospheric warming"). However, not every weakening of the vortex or warming over the Arctic can be considered a so-called "major" warming event. Those typically happen once every year or two [footnote #2]. What's your communication style?

Weather system that caused Beast from the East will 'dump snow across

10 Day Weather Explainers A Polar Vortex Weakening May Lie Ahead. Here's What That Could Mean The Rest Of This Winter. By Jonathan Erdman December 28, 2023 At a Glance A wrinkle in the winter.