Stormchaserchuck1

When it starts warming at the surface by April, we'll see which regions are going where.

Really warming up in the eastern-subsurface. Probably going to start to surface in the next month or so. SOI isn't on board yet, but it has been lagging the last 3 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.

Colder Spring probablity? AO/NAO/AAO run in decadal patterns, and run pretty together. Sept-Dec 2025 had a pretty good run of -AAO: 2025 -0.080 -0.271 0.733 1.138 0.509 0.209 0.753 0.357 -0.709 -1.236 -1.324 -1.136 That rolls forward to a -NAO signal for the following N. Hemisphere Spring (+6 months) [map correlation is default positive, with both sides included, so for -AAO it's opposite]

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

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.

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.

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

I still have full snowcover from Jan 25. This was just taken

560dm ridge over DC?.. hmm might have a tough time cooling down

I think temps are going to be an issue

^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.

Transition to El Nino should be fast

It's been 13 years since the last max.. You would think we would start moving toward loss exponentially again. Big difference has been cold 500mb and SLP over the Arctic in the warm season. Last strong High pressure Summer pattern was 2019.

Kind of hard to say. A lot of energy on the "X-ing" sound. Wouldn't be surprised if they start saying "maxin"

I mean, yeah, this doesn't look so bad. Much better than it did a few days ago. But sometimes when temps bust 5-10F warmer with an oncoming ridge, this trends less favorable in the next bit of time.

I don't think it's broadbrushed like that. You keeping pointing out anomalies, I'm saying that the mean is X. I'm basing this on 73 years x 28 days, so 2,044 analogs: So if our average high is mid 40s, that's upper 40s to near 50 on the mean. the average of 2,044 analogs.

That's what a -PNA SE ridge does though [map default is positive, so -pna is opposite] - High pressure correlation The amplified H5 could shear it out, or give you a 38F and rain day. low pressure system is really secondary to H5 pattern. My point is that in tracking, I don't see these downstream effects fully factored into medium range models.

If it happens, it's probably a rainstorm Ceder Rapids, Iowa hit 70 today High was 65F in Chicago, breaking their old daily record of 58F Milwaukee, Wisconsin hit 63F, smashing their old record of 56F That ridge is going to move east tomorrow. Then there is nothing major changing about the pattern from now to then. When -PNA's go poleward, which we have for a few days with the threat, there is some cold air behind a cold front, but it's not that strong and the overall pattern of a jet stream north stays generally in control. Maybe it's some wet snow and upper 30s as the best case scenario. But a lot of times when temps are busting high with an oncoming ridge, the storm just ends up getting sheared out or weak.

Warm pattern setting up for the 1st week of March.. strong ensemble signal for long range

I just know what people were posting here in the storm thread. They were showing like 2-4" in DC and Baltimore as late as last night! It was obvious 5+ days ago that this was a rainstorm.

Yeah.. I've seen them be constantly wrong since appearing on model pages. NWS doesn't even use them. 3 days ago I think they were showing 11" of snow here on the ensemble mean! I don't know why they are so flawed- it's suppose to be a new model. There have been bulletins I think saying don't use them.

For those interested in the climate indexes discussion: check out 2026-2027 El Nino thread

I find this to be an good coincidence -- I say coincidence because the QBO is a Stratosphere index. But since the QBO 30mb data started in 1979, every single December (6) in QBO >+5 and ENSO +El Nino -- has had the same anomaly temperature pattern. There is a >80% chance this will be this upcoming December (+QBO/+ENSO). Not only is every map the same, but they are strong anomalies in the Northeast and Great Lakes in every example. Will be interesting to see what happens in December 2026: Following January in +QBO/El Nino: The map skews warmer for El Nino because the +QBO state favors a stronger Stratosphere Polar Vortex. This has correlation with +AO in the +0-day. Not a definite constant, but a higher average in the mean (deep 10mb SPV) -- El nino by itself correlates with more High pressure in the Stratosphere.

It's basically a fiction thread if all you're going to be doing is posting long range AI snow maps.