2025-2026 ENSO

[PhiEaglesfan712]

47 minutes ago, bluewave said:

This is why it will be more challenging for Boston and other l-95 cities to the south to end this current much lower snowfall period like they did back in the early to mid-90s without a major VEI 7 or larger volcanic eruption to cool the climate down temporarily. 

 

Boston average snowfall 2019-2025….26.6”……DJF average temperature….34.6°

Boston average snowfall 1986-1992….29.9”……DJF average temperature….32.2°

Outstanding seasons following that lower snowfall period which ended the 7 year low

1992-1993…..83.9”……31.4°

1993-1994…..96.3”……27.8°

1995-1996…..107.6”……30.9°

Of course, those mid-90s seasons (especially 92-93 and 93-94) were aided by the temporary cool down in climate due to Pinatubo in 1991.

[snowman19]

AAM forecast: Ninaish for at least most of month 

The -IOD is enhacing it

[snowman19]

19 hours ago, GaWx said:

ACE, which yesterday got to a NN 91.64, is now taking a break for awhile pending mainly what the E MDR system and any possible W Caribbean system will or won’t do next week (Bahamas AOI is very weak with only a 10% chance): note that it got to 29th out of the last 75. It just missed 2018 though it went ahead of 2024, 2016, and 2022 (2022 not shown because it was then 78.85). But, 2024 and 2016 should soon pull well ahead of 2025 during this expected 2025 respite:

 

 So, getting 100+ is still not yet certain even though it’s highly likely. I’ll give it a 95% chance since it’s La Nina and recent late seasons have been active.

The new AI model runs want absolutely nothing at all to do with Atlantic tropical development the next couple of weeks. They actually did a very good job with the last 2 hurricanes, insisting that they were never going to even come close to making landfall in the SE. They actually schooled the operationals and ensembles of the other models. Are they onto something this time too? All we can do is wait and see at this point

[donsutherland1]

To illustrate @bluewavepoint about warming winters and reduced frequency of 50” snow seasons in NYC, here’s a chart that depicts winters with mean temperatures below 35 (blue) and 35 or above (red) and seasonal snowfall.

[snowman19]

This solar cycle is really taking its time to descend. September finished with sunspots at 135 for the month and the flux that started in August continues
 

 

 

 

 

[GaWx]

58 minutes ago, snowman19 said:

The new AI model runs want absolutely nothing at all to do with Atlantic tropical development the next couple of weeks. They actually did a very good job with the last 2 hurricanes, insisting that they were never going to even come close to making landfall in the SE. They actually schooled the operationals and ensembles of the other models. Are they onto something this time too? All we can do is wait and see at this point

1. Humberto: the vast majority of all models never had it threaten the US

2. Imelda:

-No UKMET or Icon had it hit the US and only one JMA did so. They were not only not schooled, they were the schoolers!

-Several CMC had it hit as you implied.

-A good # of GFS/Euro along with many ens members hit as you implied.

-But some Euro AI runs hit, too, including from Humberto. So, UK, Icon, and JMA did better than Euro-AI:

 this top map has Humberto hit NC!

 

[FPizz]

1 hour ago, donsutherland1 said:

To illustrate @bluewavepoint about warming winters and reduced frequency of 50” snow seasons in NYC, here’s a chart that depicts winters with mean temperatures below 35 (blue) and 35 or above (red) and seasonal snowfall.

I17/18 I had 53" and 20/21 had 51".  Its not like where I am is much different than nyc.  The difference was probably a band or two really, and it could of easily put NY over 50".  Snow is very location dependant.  Just because one site didnt reach 50 doesnt mean other didnt close by, and that you can broad brush statements like Bluewave does.  Like come on, a vei 7 is needed?  Even you know that is absurd.  He should win weenie of the year honestly.   

[anthonymm]

23 hours ago, mitchnick said:

Fwiw from our friends at Accuwx.

 

I like how if you forecast BN snow in the I95 corridor and AN out west you will be right like 9/10 times now.

[bluewave]

3 hours ago, PhiEaglesfan712 said:

Of course, those mid-90s seasons (especially 92-93 and 93-94) were aided by the temporary cool down in climate due to Pinatubo in 1991.

We would need a much larger even than that once since the cooling effects only lasted into 1992 and the temperatures now are much warmer than back then.

https://www.sciencedirect.com/science/article/abs/pii/S1364682624000154#:~:text=Highlights,may be worse than thought.

Conclusions

The cooling attributed to the Mt. Pinatubo eruption of 0.5 °C over 18 months in the literature mostly based on climate model predictions is overrated. Despite uncertainties remaining in the determination of the cooling and the duration, accounting for natural variability as described in this work by using a simple and intuitive approach reduces the cooling to up to 0.28 °C, on average 0.2 °C, and the duration is similarly reduced to 13 months. This result is consistent with other empirical

[donsutherland1]

22 minutes ago, FPizz said:

I17/18 I had 53" and 20/21 had 51".  Its not like where I am is much different than nyc.  The difference was probably a band or two really, and it could of easily put NY over 50".  Snow is very location dependant.  Just because one site didnt reach 50 doesnt mean other didnt close by, and that you can broad brush statements like Bluewave does.  Like come on, a vei 7 is needed?  Even you know that is absurd.  He should win weenie of the year honestly.   

He was referring to New York City (Central Park). Interior sections are cooler than NYC's heat island. For example, using the two seasons you cited, the winter mean temperatures were as follows at nearby SMQ: 2017-18: 31.7° and 2020-21: 32.6°. For Central Park, the winter mean temperatures were 36.1° for both winters.

Here's how 50" seasons disappear in New York City's historic climate record:

Mean Winter Temperature above 32° (qualifying 50" or above seasons are denoted in red):

Mean Winter Temperature above 33° (qualifying 50" or above seasons are denoted in red): 

Mean Winter Temperature above 34° (qualifying 50" or above seasons are denoted in red):

New York City (JFK, LaGuardia, and Central Park) has never had a 50" season with a mean winter temperature above 35.0°. In the broader Mid-Atlantic, Washington, DC has a single case at 35.8°, so under the right circumstances, the upper-bound is higher than what New York City's climate record shows.

On the issue of a VEI-7 eruption, it would lead to short-lived but rapid global cooling (perhaps several tenths of a degree C). Mid-latitudes would generally see appreciable cooling. Internal variability can still result in sufficiently cold winters, but the kind of cold typically associated with 50" or above snowfall seasons in New York City is decreasing in frequency. Even last winter was at the outer fringes of temperatures consistent with such snowfall in New York City's climate record.

Interior sections away from the coast and outside the major heat islands of the big cities remain sufficiently cool for more frequent 50" or above seasons, and they will remain that way for several more decades at a minimum. However,@bluewavewas addressing New York City. He wasn't making an argument outside of New York City.