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December 2023


brooklynwx99
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2 minutes ago, brooklynwx99 said:

do we need +4C anomalies over the Pacific in order for El Nino forcing to be felt? i truly do not see why there is so much discussion as if this Nino is failing and we're just stuck in a La Nina. it makes zero sense. this event is going to top out at like +1.8C

Both things can be true at the same time. The record WPAC warm pool is providing fuel for the forcing near MJO 4 to MJO 6. The near record Nino 4 SSTs are boosting the forcing near MJO 7. So we are getting a tug of war between competing El Niño and La Niña influences. This pattern translates into a warmer pattern for us in December. The hope is that the MJO 4-6 forcing can fade enough as the season progresses to allow some version of the backloaded El Niño winter climo to emerge. But as Chuck mentioned yesterday, we don’t want La Niña forcing to interfere with the typical El Niño response from later January into February.

 


 

EFAA97DE-08F8-4CA8-B736-BF7FF9600DC1.thumb.png.c12721c5a59aa462bd4210cde7999b2d.png
0CAA19C8-7F7C-4A54-AFD8-C8BDDD7C4CC4.png.a8b63b91bada358ae7bf204f71d1fc22.png

9BE2CA69-9E9F-4B36-B3CB-71678C8A3476.png.cc5cc093f86832ddf71a298fcdeef8a2.png

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10 minutes ago, bluewave said:

Both things can be true at the same time. The record WPAC warm pool is providing fuel for the forcing near MJO 4 to MJO 6. The near record Nino 4 SSTs are boosting the forcing near MJO 7. So we are getting a tug of war between competing El Niño and La Niña influences. This pattern translates into a warmer pattern for us in December. The hope is that the MJO 4-6 forcing can fade enough as the season progresses to allow some version of the backloaded El Niño winter climo to emerge. But as Chuck mentioned yesterday, we don’t want La Niña forcing to interfere with the typical El Niño response from later January into February.

 


 

EFAA97DE-08F8-4CA8-B736-BF7FF9600DC1.thumb.png.c12721c5a59aa462bd4210cde7999b2d.png
0CAA19C8-7F7C-4A54-AFD8-C8BDDD7C4CC4.png.a8b63b91bada358ae7bf204f71d1fc22.png

9BE2CA69-9E9F-4B36-B3CB-71678C8A3476.png.cc5cc093f86832ddf71a298fcdeef8a2.png

That’s what happened in 2019 during late January into February 

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1 minute ago, Stormlover74 said:

Around this time in 2015 people were calling for a +2 - +3 December. 2 weeks later we were calling for a +10

The -nao will prevent us from really torching to start the month. It will be above normal but it would have been torching without a -nao 

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2 hours ago, brooklynwx99 said:

do we need +4C anomalies over the Pacific in order for El Nino forcing to be felt? i truly do not see why there is so much discussion as if this Nino is failing and we're just stuck in a La Nina. it makes zero sense. this event is going to top out at like +1.8C

 

I've seen weather vendors amplify this idea on the energy side too and they're getting run over right now because they're all too cold.  Some people live solely inside the VP space as if it's the god particle that solves all weather.

 

 

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14 minutes ago, NittanyWx said:

 

I've seen weather vendors amplify this idea on the energy side too and they're getting run over right now because they're all too cold.  Some people live solely inside the VP space as if it's the god particle that solves all weather.

 

 

could you explain this idea to me like im a 7 year old

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Just now, WestBabylonWeather said:


The thing is, like Brooklyn was trying to say, totally different setup from last winter with the El Niño. So it’s unlikely to mirror last year.


.

Understood completely. I mean, in the grand scheme of things, could it possibly be worse than last year? I even managed to get like 6 inches here in white plains, which by no means is good, but i think statistically it will have to snow this season

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Understood completely. I mean, in the grand scheme of things, could it possibly be worse than last year? I even managed to get like 6 inches here in white plains, which by no means is good, but i think statistically it will have to snow this season

Very rarely do we get two terrible years in a row. At least since 2002 I believe.


.
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3 hours ago, WestBabylonWeather said:


The thing is, like Brooklyn was trying to say, totally different setup from last winter with the El Niño. So it’s unlikely to mirror last year.


.

We have been getting warmer than average to record warm winters in the Northeast since the super El Niño regardless of ENSO. So El Niño or La Niña may not be that relevant for our temperatures. Snowfall has been highly variable since the 90s with mostly all or nothing seasons. Unfortunately, last winter was one of the nothing seasons for snowfall. 
 

Mot much correlation between winter temperatures around NYC and ENSO.

 

NYC

Feb 23…+5.2

Jan 23…+9.8

Dec 22…-0.6

…………..+4.8……La Niña…2nd warmest winter

 

Feb 22….+1.4

Jan 22….-3.2

Dec 21….+4.7

……………..+1.0….La Niña 

 

Feb 21….-1.7

Jan 21….+1.1

Dec 20…+1.7

…………..+0.4……La Niña 

 

Feb 20…+4.8

Jan 20….+6.5

Dec 19….+0.8

…………….+4.0…..Neutral….7th warmest winter

 

Feb 19….+0.9

Jan 19….-0.1

Dec 18…+2.6

…………….+1.1……Uncoupled El Niño 

 

Feb 18…+6.7

Jan 18….-0.9

Dec 17…..-2.5

…………….+1.1……La Niña

 

Feb 17…..+6.3

Jan 17….+5.4

Dec 16….+0.8

…………….+4.2…..La Niña…6th warmest winter

 

Feb 16….+2.4

Jan 16….+1.9

Dec 15….+13.3

…………….+5.9…..El Nino …2nd warmest winter

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10 hours ago, Allsnow said:

In winters past once the jet retracts the -epo pops to far west to favor cold in the east. This could be the case again for the second half of the month if the mjo slows in the warm phases, which is why I didn’t understand why people expected it to race through 

Funny thing is 18Z Op GFS shows that crazy AK/W Canada ridge again that is too far west for us usually at D16.

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