snowman19

Regardless of what happens with ENSO between now and December it does appear that we will have a new +IOD record on our hands:

+IOD standing wave in place now

I’m calling it now, IMO we go above +2.0C in region 3.4 come the 1st week of November and November will average at least +2.1C. That will be the 1st month of the trimonthly super peak. I’m also calling that this +IOD becomes stronger than the 2019 event, peaks in early November and lasts longer than 19-20 did, doesn’t go neutral until February

Potential Hunga Tonga effects aside, that study has some pretty convincing evidence that the NAM and NAO may not be as favorable as some think due to the very strong +IOD event and the effects from that

It is definitely east-based/EP when looking at raw SSTs and the EP look is about to be reinforced. I would also wait until November before declaring that this has no chance of becoming super either

I’m not so sure we see a predominantly -NAO this winter here’s why: Study link: https://rmets.onlinelibrary.wiley.com/doi/10.1002/asl.1005

@brooklynwx99 https://www.twitter.com/paulroundy1/status/1712052777453527330?s=46&t=NChJQK9_PUjA1K7D2SMojw FWIW the new JMA still gets it to super

I don’t care about that model. I posted it for their disco

New BOM update: https://ow.ly/MjnY50PVpMh

Here comes the parade of Nino linked typhoons

This is why I still think this Nino goes super:

I’m going down with the ship I guess. I still think it goes super

If we do indeed get to a super event in this way, it will really be historic. It will definitely be the subject of studies and papers written for several years to come. Totally defied the “normal” progression we are accustomed to from the start

This El Nino is definitely going to make its presence felt. I have no doubts at all about that. Besides the PDO, what did the IOD and MJO do interacting with the Nino during the 72-73 winter? That might explain some of it….

My question is, if we do indeed see a trimonthly super event and I’m still very confident we do, how far east does the forcing move in response? I think we pretty much get the answer to that come late November. I’m not confident at all in what happens to the Nino forcing

Just keep in mind that in strong/super Ninos the MJO may be a complete non factor at times (COD), possibly a lot, and the Nino standing wave runs the show, as is typical for the stronger events. When there is MJO activity however, I expect more 8-1-2 weak, fast moving wave activity as opposed to the 15-16 unusual Niña phases due to the very strong +IOD. As you can see here, the Nino is exerting its force:

Correct, it’s in the top 3 in the last over 43 years. That would classify as “near record”, I didn’t say it was “the record”, but extremely impressive nonetheless. And [mention=2515]Terpeast[/mention] just in terms of SSTs, I consider it to be east-based, it’s not even close to being a Modoki, or becoming one….not even in the ballpark. Further, [mention=13726]so_whats_happening[/mention] the PDO does not force ENSO, on the contrary, it’s the other way around @Gawx has the IOD info

Latest ENSO weekly update: Region 1+2: +2.6C Region 3: +1.9C Region 3.4: +1.5C Region 4: +1.2C This El Niño is still very east-based. I see very little to no chance at all of this event becoming a Modoki, despite the non stop hype from JB. Region 1+2 has warmed back up to +2.8C on the OISST as of yesterday’s update, region 3 is almost +2.0C (record warm) on OISST https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/enso_evolution-status-fcsts-web.pdf

Since the IOD is not projected to go completely neutral until February, along with the atmospheric lag thereafter, I would expect it to go all the way through winter into March/April

Yes. This is what I’ve been saying. This record +IOD along with a strong/super El Niño is going to completely suppress/subsidence the IO and MC convection. That is why the MJO is projecting weak right now. Fast moving, weak MJO ph 8-1-2 waves constructively interfering and coupling with the Nino standing wave are what I’d expect in this setup. I don’t think we will have to worry about Niña-like MJO forcing (15-16) this time around

@Gawx This is very likely to be the strongest +IOD event in history. It jumped all the way up to +1.85 and still strengthening

@Typhoon Tip The water vapor hadn’t fully saturated the polar/arctic stratosphere in the Northern Hemisphere yet like it has now. “Thus large effects on the arctic polar vortex are expected to manifest starting in the 2023/2024 cool season." See this study: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023GL103855

Not really sure why Metsfan weenie’ed this post, but this would be what you want to see…MJO waves (8-1) constructively interfering, coupling with the El Niño standing wave and suppression/subsidence over the IO and Maritime Continent. The +IOD is also playing a big role. Unless you more of the same Niña-like forcing of what we’ve had over the last 4 winters in a row. And as far as the -PDO, yes it is most likely going to go positive from the Nino forcing this winter but likely not until April or so. It’s going to take some time to completely erode and alter the configuration from what is now a very deeply negative state….