OT: Spring Warmth, 3/5-3/12+? Winter 2025-26 - Patterns and Potential Winter Storms

Knight Shift

Heisman
May 19, 2011
88,903
86,904
113
Figured I'd keep general weather/pattern stuff in this thread, so here goes.

Hope y'all like winter, because the medium/long range models are showing development of a pattern for at least the first 3 weeks of January which should be colder than normal and is conducive to east coast snowstorms, although as usual for these things, predicting the cold well in advance is easier than predicting snow well in advance (so many things have to go just right for snow in this area, as we just saw on Friday). There are several quotes/links below from 3 well-respected meteorologists on this, none of whom would ever be called snow hypesters,, with the level of excitement being pretty high.

The pattern features an anomalously strong -NAO (North Atlantic Oscillation) often called a Greenland block with high pressure in that area "blocking" the cold air from the polar vortex from circulating towards Greenland, which shunts the polar vortex down into the eastern 1/3 of the US as part of a large trough, bringing cold air with it.

The second ingredient needed is moisture and the subtropical jet looks to be active during this period, bringing moisture along the base of the trough and possibly up the coast if the timing works out, which can bring wintry weather to our area and in this kind of pattern, historically, we've often (but not always) seen major snowstorms.

There could also be clipper type systems that come from Canada and the midwest towards our area that deliver smaller amounts of precip (maybe snow); we have a couple of these chances from 12/31 through 1/6 with the bigger chances looking like they could occur after that. Note that the ensemble means for the major long range models (when those models are run dozens of times with perturbations to gauge sensitivity) also show more snow than "normal" for the next 15+ days. We'll see, of course.

From John Homenuk: "Day 10 Composite 500hPa Height Anomalies from todays 12z ECMWF EPS are astonishing both in regard to the intensity of high latitude blocking and the individual analogs - many of which are centered around memorable periods of winter weather in the Eastern US." This is a 4 sigma (4 std deviations, meaning it occurs <1% of the time) anomaly; the first image below shows what this looks like on the Euro model and also shows the closest analogs to this model depiction, several of which featured major east coast snowstorms in that pattern.



From Jeff Berardelli: "If you like cold and snow in the East, the pattern the next 2 weeks is text book! For the layman, (relative) warm blocking in the Arctic “displaces” the tropospheric Polar Vortex, forcing cold southward into the US. For the weather nerds out there, the high latitude block reaches 4.5 Standard Deviations / Sigma from the mean next weekend on the European model. Easily a record. It may not verify, but if it’s even in the ballpark, it’s on like Donkey Kong! Buckle up!!" He includes a nice video showing what the pattern formation looks like (it's in the link below in case it doesn't show up in this post).



From Tomer Burg (who is calling for 20-29" of snow in NYC during January): "What does this mean for snowstorm prospects in the East Coast? Initially, not much. Notice how we start with the same cold and dry NW flow regime we've been in before. The key is to monitor the upstream evolution, as the Bering Sea block erodes and is likely replaced by a Pacific trough, increasing the chances of western US ridge amplification.
The kind of pattern increases the probability of a moderate to major snowstorm vs. climatology in the Mid Atlantic, and potentially southern New England, which would necessitate a well-timed upstream ridge amplification coinciding with downstream confluent flow and a sufficiently cold airmass in the northeast US. While a major snowstorm is never a guarantee, chances of at least one or two in the January 8-25 time frame are higher than average."


After Friday's debacle. . . .

I Dont Believe You Will Ferrell GIF
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Someone is honking too early
Someone needs to read more closely. That was posted last Tuesday for this past Friday's (12/26) event when I normally start threat threads about 4 days in advance, which would've been Monday morning on 12/22 (I first started talking about the threat on 12/18) . However, someone else started the thread for 12/26 late on Monday.

There is a chance of 1/2-1" of snow on 12/31 into 1/1, especially near and north of 78 - not a big deal, but with cold temps, any snow will accumulate and could make for slippery sidewalks and driveways and maybe even secondary roads on NYE, which could be a concern for partiers. Beyond that there's a chance of a clipper or two bringing light snow during the first week in January with the bigger threats looking to be from 1/6 onward, meaning these are impossible to predict right now and might not even materialize (but the pattern and long range models support them possibly forming).

Also, any snow/slush still on the ground now (we have about 1" of high water content slush) is about to freeze solid overnight. Probably not an issue for and roads but could be an issue for those who do any outdoor activities, like hiking, walking and, of course, disc golf - we had a blast playing in the snow yesterday with about 15 folks on our weekly club round (we normally have 30+, but some don't love the snow lol.
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
After Friday's debacle. . . .

I Dont Believe You Will Ferrell GIF
Well, the last pattern thread worked out perfectly (this thread, really) with both above average snow and below average temps and then the 12/14 snowstorm was forecast very well. But this last storm was certainly a debacle for folks in most of Hunterdon, Warren and Sussex and generally south of 78 for the most part (except northern Middlesex County - we got 2.4", which was really 3.5" worth of snow "mass" when factoring in sleet density which was certainly a bust, but not a debacle, IMO), but was pretty good for NENJ, NYC, SENY and LI/CT. Will be doing a post-mortem soon.
 
  • Like
Reactions: Knight Shift

Sweet Pea's Corner

All-American
Sep 10, 2001
17,837
5,694
113
Someone needs to read more closely. That was posted last Tuesday for this past Friday's (12/26) event when I normally start threat threads about 4 days in advance, which would've been Monday morning on 12/22 (I first started talking about the threat on 12/18) . However, someone else started the thread for 12/26 late on Monday.

There is a chance of 1/2-1" of snow on 12/31 into 1/1, especially near and north of 78 - not a big deal, but with cold temps, any snow will accumulate and could make for slippery sidewalks and driveways and maybe even secondary roads on NYE, which could be a concern for partiers. Beyond that there's a chance of a clipper or two bringing light snow during the first week in January with the bigger threats looking to be from 1/6 onward, meaning these are impossible to predict right now and might not even materialize (but the pattern and long range models support them possibly forming).

Also, any snow/slush still on the ground now (we have about 1" of high water content slush) is about to freeze solid overnight. Probably not an issue for and roads but could be an issue for those who do any outdoor activities, like hiking, walking and, of course, disc golf - we had a blast playing in the snow yesterday with about 15 folks on our weekly club round (we normally have 30+, but some don't love the snow lol.
Like I said Honk Honk
 
  • Haha
Reactions: T2Kplus20

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Today's update on the likely coming pattern from John Homenuk who got his start as a teenager on the old EasternUS Weather board as earthlight and grew up to be a damn good meteorologist who runs NY Metro Weather now: https://x.com/nymetrowx

As he and all the other respected non-hypester mets are saying, a pattern like this is certainly much more favorable for cold and snow in our area than almost any other pattern, but there's no guarantee the pattern being talked about for bigger storms in 7+ days is going to evolve as forecast now and even if it does there's still no guarantee that we're going to get a major snowstorm, but this kind of pattern has delivered a disproportionate number of major snowstorms in the past, so there's that. This is all probabilistic forecasting where uncertainty is inherent in the models and forecasts. The biggest indicator to me is that the Euro, CMC and GFS ensemble forecasts out to 15 days are showing anomalously high snowfall forecasts -again, not a guarantee, but a strong indicator.

 

WhiteBus

Heisman
Oct 4, 2011
39,520
21,922
113
There was a thread in early early December saying that the second half of the month would be generally above average. That didn't go well.
 
Last edited:
  • Like
Reactions: bac2therac

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Some light snow likely NYE evening through early NY Day with 1/4-1/2" possible from 276/195 up to 78 and 1/2-1" possible N of 78, especially for places like the Poconos and NWNJ and along/N of 84. This is not a big deal storm at all (and we may also see little to no snow), but with temps below 32F any snow that falls will accumulate, including on untreated surfaces/roads, so things could get slippery on an evening where driving - and sometimes walking - is already a challenge. Hopefully everyone has a safe and fun NY Eve tonight and best to all for a happy and healthy 2026. With lots of snow, of course.

1767186067133.png
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Some light snow likely NYE evening through early NY Day with 1/4-1/2" possible from 276/195 up to 78 and 1/2-1" possible N of 78, especially for places like the Poconos and NWNJ and along/N of 84. This is not a big deal storm at all (and we may also see little to no snow), but with temps below 32F any snow that falls will accumulate, including on untreated surfaces/roads, so things could get slippery on an evening where driving - and sometimes walking - is already a challenge. Hopefully everyone has a safe and fun NY Eve tonight and best to all for a happy and healthy 2026. With lots of snow, of course.

View attachment 1102088

If you're still awake and maybe drunk at 4-6 am, there should be a cool snow squall line passing through - might only last 15-20 minutes but could put down a quick 1/2" and make for low visibility, especially N of 78.

1767232098510.png
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Snow squall warning up - looks like fun, unless you're stuck driving in it. Should only last 10-15 min, but could produce local whiteout conditions.

1767263234948.png
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Started at 5:45 am was light for a minute or two, then boom the wind kicked in and the snow got moderate to heavy for the next 10 min, then we had a 5 minute lull then another heavy band until about 6:30 am; lighter now, but not over looking at the radar; 0.6" so far. Gorgeous. Pics to come.
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
Ended around 7:00 am with 0.75" otg at 26F as the temp dropped from 32F at the start - pretty amazing little squall line. Reports of an inch or more in NNJ, so with temps in the 20s all day, this will certainly lead to slippery untreated roads and sidewalks/driveway - I know the road in front of my house is pretty slick right now Brings me to 11.0" on the season, which is a fantastic start. First is a pic at the height of the initial squall, followed by a pic after it was all over.

reVSv4A.jpg



IEDPwSA.jpg
 

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
In case you thought that 2025 was a windy year, you were not imagining things. It was. In fact, it was the windiest year in the ~95 year history of wind measurements at Newark Airport, by far, as per the graphics below showing incidence of wind gusts over both 40 mph and 50 mph. There were 71 days with 40+ mph wind gusts (previous record was 43) and there were 25 days with 50+ mph wind gusts (previous record was 12).

The biggest factor was the very large number of vigorous northern jet stream systems impacting our area, bringing W to NW flow. Credit to poster bluewave on AmericanWx who compiled the data. A great example of this was the recent record seiche observed on Lake Erie, where strong persistent SW winds pushed the water NE-ward resulting in lowering the water at the SW end of the lake by 6-7 feet and raising the water level at the NE end, in Buffalo, by 6-7 feet causing significant flooding. Crazy stuff.

https://www.americanwx.com/.../62392-december-2025.../...
https://weather.com/.../2025-12-30-winter-storms-lake...

1767330571317.png

1767330589293.png
 
  • Like
Reactions: Knight Shift

RU848789

Heisman
Jul 27, 2001
65,222
44,301
113
No thread on this surprise snow.overnight? Dropped the ball on this one.
Missed it - we got 1/4" overnight. Was awake and watching TV most of the time it was snowing (12-3 am per the radar), but never looked outside or on-line, lol. With 1.0" the past 2 mornings, we're up to 11.2" for the season.

And there's some chance of another 1/4-1/2" of snow early Sunday before sunrise. After that, snow looks unlikely through next weekend as warmer than normal temps move in around Tuesday through next weekend with highs mostly in the 40-50F range. The cold pattern looks to reload around 1/13 or so. We'll see.
 
  • Like
Reactions: Knight Shift

Knight Shift

Heisman
May 19, 2011
88,903
86,904
113
Missed it - we got 1/4" overnight. Was awake and watching TV most of the time it was snowing (12-3 am per the radar), but never looked outside or on-line, lol. With 1.0" the past 2 mornings, we're up to 11.2" for the season.

And there's some chance of another 1/4-1/2" of snow early Sunday before sunrise. After that, snow looks unlikely through next weekend as warmer than normal temps move in around Tuesday through next weekend with highs mostly in the 40-50F range. The cold pattern looks to reload around 1/13 or so. We'll see.
When do you sleep?
 

T2Kplus20

Heisman
May 1, 2007
31,958
19,902
113
I thought we were in a prolonged cold period yet i see 40s and some 50s next week and the cold the following week looks garden variety. Just a few more days to get through before we can start living outside again
Looking forward to the warmer weather next week. The TKR jinx is in full effect. LOL!
 
  • Like
Reactions: bac2therac