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2026-2027 Super El Nino


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21 hours ago, LakePaste25 said:

To be fair, we are also putting a major dent in the warm pool, and the warmest waters are now between 160-170E with plenty of westerlies remaining in the forecast.

 

IMG_9909.png

We have a record 30C warm pool from the IO over to Nino 4. So the Nino forcing is linking up with forcing near the Maritime Continent. This is part of the reason that the models have the warmth in Canada and across the Northern Tier states as we head into June.

IMG_6525.thumb.png.52ccad22100905cfe6c6b4495b32d90c.png

IMG_6524.gif.761a7914b4a9a4e021f3e2e54242902c.gif

IMG_6523.thumb.png.81697b334ef2a6b15562034f0a7c6918.png

 

 

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19 hours ago, mitchnick said:

It didn't cave last year or the year before either fwiw, and did pretty well with the BN temps forecasts.

Usually the seasonal guidance will be biased towards stock ENSO, so when a seasonal model shows that output leading into an intense El Nino episode, it should provide reason for pause.

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16 hours ago, brooklynwx99 said:

these events always begin very EP, that's nothing new. not much support on a persistent EP event... we should see things move basin-wide by the time winter rolls around. looks pretty 2015-16 esque in that regard, not 1997-98

cansips_sstaMean_noice_month_global_5.thumb.png.777243d50fd34ebaa9c1230a1ef6f51b.pngcfs-mon_01_sstaMean_month_global_4.thumb.png.50659b38526675c1f83e75af98d921be.png

I think it's important to not get too cute with the EMI when ENSO gets this strong because all of them are going to be "basin wide" in the sense that the anomalies will encompass the entirety of the ENSO area. Good luck getting 2.5C in the east or west, and having 0C on the other end. This is why I'm not really focused too much on EMI.

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25 minutes ago, 40/70 Benchmark said:

Another nod towards 1997.

Unpopular opinion here. 1997-98 wasnt AS bad as it gets a rep for in the Great Lakes. It sucked, but an nunprecedented shutout (just a T) in February sealed its fate in infamy. Nov-Jan was ok, multiple rounds of snow (then a few more in March). The 2nd half of January was solid white ground and gray skies and the temp barely moved. Good enough for snow but I imagine terrible for ice fishing. 

Still high on the list of winters I dont care to ever see again, but significantly better than 1982-83.

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2 minutes ago, michsnowfreak said:

Unpopular opinion here. 1997-98 wasnt AS bad as it gets a rep for in the Great Lakes. It sucked, but an nunprecedented shutout (just a T) in February sealed its fate in infamy. Nov-Jan was ok, multiple rounds of snow (then a few more in March). The 2nd half of January was solid white ground and gray skies and the temp barely moved. Good enough for snow but I imagine terrible for ice fishing. 

Still high on the list of winters I dont care to ever see again, but significantly better than 1982-83.

I agree that it could have turned out better than it did with a little luck, but I would take 1982 12x over 1997. Dec 1997 had a great storm here just before Xmas, which was the one good event that entire wretched season.

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20 minutes ago, 40/70 Benchmark said:

I'll bet if we did 1997 over again, it would work out somewhat better for my area.

I remember HM mentioning awhile ago that the 97-98 season came extremely close to a KU for the NE/Mid atlantic. I keep stressing that a 97-98 redux does not automatically mean “guaranteed low snow season” even for DC/PHL/NY.

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3 minutes ago, LakePaste25 said:

I remember HM mentioning awhile ago that the 97-98 season came extremely close to a KU for the NE/Mid atlantic. I keep stressing that a 97-98 redux does not automatically mean “guaranteed low snow season” even for DC/PHL/NY.

As an anecdotal note, I think the run of "bad luck" for the east coast has come to an end and feel like we are starting to more efficiently cash in for a while. Just a hunch.

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19 hours ago, brooklynwx99 said:

these events always begin very EP, that's nothing new. not much support on a persistent EP event... we should see things move basin-wide by the time winter rolls around. looks pretty 2015-16 esque in that regard, not 1997-98

cansips_sstaMean_noice_month_global_5.thumb.png.777243d50fd34ebaa9c1230a1ef6f51b.pngcfs-mon_01_sstaMean_month_global_4.thumb.png.50659b38526675c1f83e75af98d921be.png

Cansips is still going full Modoki unlike Euro and CFS. But I think it may have a Modoki bias based on at least one previous year.

Latest Cansips DJF has warmest SST anomalies over W region 3.4/region 4: (**corrected** as I had region 3 typo)

IMG_0579.thumb.png.e87d5a4cadc20cc9f60c2aa359827b53.png
 

*Edited for typo

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 Latest CFS DJF fits super Nino climo well unlike what Cansips is still showing, which may be related to it having Modoki:

CFS DJF: looks like what one would expect with super-Nino:

IMG_0577.thumb.png.d1fdb5bf97b6753b1a6b7b645e0f196f.png
 

Cansips DJF: still looks off but may be due to it having Modoki

IMG_0578.thumb.png.370763b7572f9369c7024c6971c677f2.png

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The long range forecasts from the CanSIPS have a strong cold bias. Notice how the model had a cold spring especially in the Great Lakes and Northeast from the older forecasts. Didn’t really begin to catch on until the March 1st update. But even then it was too cold. 
 

IMG_6531.thumb.png.f6b2edbd0055a82da00a435fafb20c4f.png

IMG_6532.thumb.png.52f6bb7167af5d040121853a2f9e5cac.png

Verification 2nd warmest spring on record for the CONUS

 

 

Spring (Mar-May) temperature departure from the 1991-2020 normal. Seems warm.
bafkreigg35epsek5oeihqy6yrn3uk7dmsdnxbnw
 
bafkreigv3cjaxrfqvacpcjrzpupj4lw5djwejeot5houtwfwd2skd4atzu
 
‪Climatologist49‬
 ‪@climatologist49.bsky.social‬
· 20h
Spring 2026 was the 2nd warmest on record for the Contiguous U.S. (2012). A majority of locations had a top 5 warmest spring compared to all springs since 1895 and many places had their warmest. Only a small area of the northern Plains had a cool spring compared to the full period-of-record.
bafkreianhz646xe5f36liwci6vots5nthofwivf
 
2:07 PM · Jun 1, 2026
Everybody
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11 minutes ago, bluewave said:

The long range forecasts from the CanSIPS have a strong cold bias. Notice how the model had a cold spring especially in the Great Lakes and Northeast from the older forecasts. Didn’t really begin to catch on until the March 1st update. But even then it was too cold. 
 

IMG_6531.thumb.png.f6b2edbd0055a82da00a435fafb20c4f.png

IMG_6532.thumb.png.52f6bb7167af5d040121853a2f9e5cac.png

Verification 2nd warmest spring on record for the CONUS

 

 

Spring (Mar-May) temperature departure from the 1991-2020 normal. Seems warm.
bafkreigg35epsek5oeihqy6yrn3uk7dmsdnxbnw
 
bafkreigv3cjaxrfqvacpcjrzpupj4lw5djwejeot5houtwfwd2skd4atzu
 
‪Climatologist49‬
 ‪@climatologist49.bsky.social‬
· 20h
Spring 2026 was the 2nd warmest on record for the Contiguous U.S. (2012). A majority of locations had a top 5 warmest spring compared to all springs since 1895 and many places had their warmest. Only a small area of the northern Plains had a cool spring compared to the full period-of-record.
bafkreianhz646xe5f36liwci6vots5nthofwivf
 
2:07 PM · Jun 1, 2026
Everybody

Thanks, Chris.

 Indeed, Cansips was much too cold in the E US this spring. And it has been too cold there at other times. But I’m curious. Does it actually have a well analyzed documented cold bias in the E US based on an amply sized sample based on a good number of years? I wouldn’t be surprised but it’s important to know, of course.

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3 hours ago, LakePaste25 said:

I remember HM mentioning awhile ago that the 97-98 season came extremely close to a KU for the NE/Mid atlantic. I keep stressing that a 97-98 redux does not automatically mean “guaranteed low snow season” even for DC/PHL/NY.

72-73 also had some near misses to.

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2 hours ago, forkyfork said:

cope and cry

image.thumb.jpeg.3acefd6ac65e35a9767b84a0b56732ea.jpeg

So does that mean if it's 3.5 instead of 2.5 that we're going to melt?. Will Los Angeles fall into the ocean? Trying to figure the out the hype..Yes ithere will be above normal temps this winter, doesn't mean there won't be any winter weather.

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2 hours ago, bluewave said:

The long range forecasts from the CanSIPS have a strong cold bias. Notice how the model had a cold spring especially in the Great Lakes and Northeast from the older forecasts. Didn’t really begin to catch on until the March 1st update. But even then it was too cold. 
 

IMG_6531.thumb.png.f6b2edbd0055a82da00a435fafb20c4f.png

IMG_6532.thumb.png.52f6bb7167af5d040121853a2f9e5cac.png

Verification 2nd warmest spring on record for the CONUS

 

 

Spring (Mar-May) temperature departure from the 1991-2020 normal. Seems warm.
bafkreigg35epsek5oeihqy6yrn3uk7dmsdnxbnw
 
bafkreigv3cjaxrfqvacpcjrzpupj4lw5djwejeot5houtwfwd2skd4atzu
 
‪Climatologist49‬
 ‪@climatologist49.bsky.social‬
· 20h
Spring 2026 was the 2nd warmest on record for the Contiguous U.S. (2012). A majority of locations had a top 5 warmest spring compared to all springs since 1895 and many places had their warmest. Only a small area of the northern Plains had a cool spring compared to the full period-of-record.
bafkreianhz646xe5f36liwci6vots5nthofwivf
 
2:07 PM · Jun 1, 2026
Everybody

Cansips was good last winter where the CFS 2 had a torch, but yea every Super Nino is warm. We will have to wait to see how warm

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6 minutes ago, WX-PA said:

So does that mean if it's 3.5 instead of 2.5 that we're going to melt?. Will Los Angeles fall into the ocean? Trying to figure the out the hype..Yes ithere will be above normal temps this winter, doesn't mean there won't be any winter weather.

Yeah. All of that is going to happen plus fish will be living out of water and mosquitos will bite themselves. It’s going to be crazy!!

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Nino 3.4 was unchanged at +0.5 in yesterday’s release. The other 3 regions warmed 0.1. I’m expecting 3.4 to be a few ticks warmer in the next weekly release as a typical delayed reaction to the start of the SOI drop a couple of weeks ago. 
 

 20MAY2026         1.6        0.7        0.5        0.6
 27MAY2026         1.7        0.8        0.5        0.7

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2 hours ago, WX-PA said:

Cansips was good last winter where the CFS 2 had a torch, but yea every Super Nino is warm. We will have to wait to see how warm

CanSIPS was too cold overall across the CONUS during the 2025-2026 winter. It verified as the 2nd warmest winter on record across the CONUS.

To be fair none of the models correctly forecast how warm and expansive the Western ridge would become. This allowed the East to turn out colder for a change than the seasonal models such as the CanSIPS were forecasting.

But the magnitude and geographic coverage of the cold was limited compared to the expansive and record breaking nature of the warmth. 
 

IMG_6537.thumb.png.693ff7eae75a751ad7a963ea4e76d8d5.png

 

 

IMG_6539.png.d4741f19c016d324d6008d6198306a56.png

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16 hours ago, bluewave said:

CanSIPS was too cold overall across the CONUS during the 2025-2026 winter. It verified as the 2nd warmest winter on record across the CONUS.

To be fair none of the models correctly forecast how warm and expansive the Western ridge would become. This allowed the East to turn out colder for a change than the seasonal models such as the CanSIPS were forecasting.

But the magnitude and geographic coverage of the cold was limited compared to the expansive and record breaking nature of the warmth. 
 

IMG_6537.thumb.png.693ff7eae75a751ad7a963ea4e76d8d5.png

 

 

IMG_6539.png.d4741f19c016d324d6008d6198306a56.png

I think the CANSIPS did best last winter, granted non of the models accurately incorporate the magnitude of CC attributed ridge expansion. Just saying...not meant to imply it necessarily will again.

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10 minutes ago, 40/70 Benchmark said:

I think the CANSIPS did best last winter, granted non of the models accurately incorporate the magnitude of CC attributed ridge expansion. Just saying...not mean to imply it necessarily will again.

The EPS weeklies actually did a decent job beginning in late October into November seeing the general 500mb pattern.

But the Western ridge verified much stronger skewing the total CONUS significantly warmer.

This allowed our area to beat the guidance to the colder side for a change. The first colder winter with above average snowfall in 11 years for our region made it really stand out against the sea of warmth since 2015-2016. 

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