2025-2026 ENSO

[EastonSN+]

9 minutes ago, GaWx said:

Thanks for posting that.

 Will it get the dip right this time? It busted with those runs having it very weak around 2/10-15. So far this month the weakest has been down only to 19 m/s.

Also a rather quick rebound. @40/70 Benchmark may be able to opine on the effects.

[roardog]

3 hours ago, Stormchaserchuck1 said:

Transition to El Nino should be fast

Don’t we usually start seeing the SOI start going more negative around this time of year for a developing Nino? So far, it’s still quite positive. That could also indicate a pattern change.

[GaWx]

2 hours ago, roardog said:

Don’t we usually start seeing the SOI start going more negative around this time of year for a developing Nino? So far, it’s still quite positive. That could also indicate a pattern change.

Great point except that isn’t usually at least til Mar or April for even the strongest oncoming ones. And lots of times it isn’t till summer or even early fall, especially for the weak ones.
 In summary, it’s too early for a predominant -SOI even assuming El Niño is on the way in 2026. March is typically the very earliest.

——
Edit:

@LakeEffectOH is your avatar pic Mrs. Slocombe from “Are You Being Served?”

[PhiEaglesfan712]

I'm not sure if anyone posted this yet, but the MEI for January was -0.8

[GaWx]

Today’s Euro Weeklies are cooler but only in the shorter term (week of 2/23-3/1), which covers the latter portion of the expected storm that’s being heavily discussed:

Yesterday’s 2/23-3/1:

 

Today’s 2/23-3/1 has a colder signal:

 

[LakeEffectOH]

5 hours ago, GaWx said:

Great point except that isn’t usually at least til Mar or April for even the strongest oncoming ones. And lots of times it isn’t till summer or even early fall, especially for the weak ones.
 In summary, it’s too early for a predominant -SOI even assuming El Niño is on the way in 2026. March is typically the very earliest.

——
Edit:

@LakeEffectOH is your avatar pic Mrs. Slocombe from “Are You Being Served?”

Yes it is...

[cmillzz]

10 hours ago, Stormchaserchuck1 said:

^Pretty warm look. Models haven't really been verifying that pattern this Winter though - let's see if it holds as we get closer, but +nao/+epo combo can be pretty warm and sustained for a little bit of time. 

Very warm pattern for the Midwest atm though. Chicago and other cities obliterated old record highs yesterday.

[EastonSN+]

Still not getting there fast enough

[EastonSN+]

Large dip.

[40/70 Benchmark]

22 hours ago, EastonSN+ said:

Also a rather quick rebound. @40/70 Benchmark may be able to opine on the effects.

Like I said last week, the dip may have just been rushed...we are seeing some trending towards that.

[Stormchaserchuck1]

Still no signs of pattern change in March on long range ensemble models

[Stormchaserchuck1]

20 hours ago, roardog said:

Don’t we usually start seeing the SOI start going more negative around this time of year for a developing Nino? So far, it’s still quite positive. That could also indicate a pattern change.

SOI has been lagging the last few years

25-26 RONI Nina: the monthly SOI never went >+10 until October '25

24-25 RONI Nina: the monthly SOI never went >+10 at all

23-24 Strong Nino: SOI was Neutral until May 2023, when the El Nino began. Feb-March-April 2023 average SOI was +2.7/month. 

[EastonSN+]

3 minutes ago, Stormchaserchuck1 said:

Still no signs of pattern change in March on long range ensemble models

Its following the GEFS MJO. Its in phase 6 there. Should pick up on phase 7 2nd week of March.

[GaWx]

33 minutes ago, EastonSN+ said:

Still not getting there fast enough

Keep in mind that phase 3 has on average been the coldest phase during the 20 La Niña Februaries since 1975. Note that the upcoming snowstorm threat period of Feb 22-23 centered on the Mid Atlantic is forecasted to be in or very near phase 3 fwiw all the while fighting the making it a challenge progged strong -PNA.

[Stormchaserchuck1]

28 minutes ago, EastonSN+ said:

Large dip.

Warmer overall right now, but not a "classic warming"

This Winter is going to finish with greater warm anomalies than cold anomalies at 10mb.. which matches QBO. For the 4th Winter in a row. 

[Stormchaserchuck1]

5 month SOI.. Oct-Feb 25-26 is still going to be the highest since 2022. And we're seeing more of a Nina pattern here in the 2nd part of February and March, despite warm subsurface