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The Polar Vortex Has Shifted Into Reverse – And Is Now Spinning Backwards


OverSword

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A major current of circulating air called the Arctic polar vortex has completely reversed course and is now spinning 'backwards'. With winds now blowing easterly, scientists are trying to predict what effect this might have on weather systems in the coming months.

Before you start envisioning the sudden collapse of our planet's weather systems, these reversals aren't all that unusual. While the strength of the reversed winds has attracted attention, this is not the first reversal this year.

During the summer months in the Northern Hemisphere, the vortex's circulating winds slow down and start spinning easterly (clockwise around the Arctic) too.

 

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Not unusual, it can indicate blocking in weather patterns and a longer spell of dry or cold or wet or hot conditions. Wind direction is usually from the west, a reversal has winds from the east. 

Hopefully the UK will see some spring like dry and sunny weather.

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Yeah,not really a big deal...

May effect the transitioning El Ninos/La Nina pattern somewhat,not sure.

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5 hours ago, CrimsonKing said:

Yeah,not really a big deal...

May effect the transitioning El Ninos/La Nina pattern somewhat,not sure.

@Essan is the climate and weather guy.

Hey Andy! Leave the sheep a minute your needed! 😲

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5 minutes ago, Piney said:

@Essan is the climate and weather guy.

Hey Andy! Leave the sheep a minute your needed! 😲

Does he have a little Broooother!:lol:

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Posted (edited)

This happens most years.   It can mean a spell of colder weather than usual in some parts (especially when it happens in winter), but it's not anything to get excited about  at this time of year and it certainly won't have any impact on the expected transition from El Nino to La Nina.

It's correctly known as a sudden stratospheric warming

https://www.weather.gov/bis/sudden_stratospheric_warming_events#:~:text=A sudden stratospheric warming is,polar vortex and weaken it.

Edited by Essan
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