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Pattern December to Remember

La nina is killing us and it looks to keep the same dominant pattern throughout this years winter. As with last year all we can do is hope for something to pop between quick cool downs. Again, maybe February saves some of us when the pattern starts to relax some.

Latest seasonal forecast:
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Look familiar?
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Do I dare say "just wait until next year"?
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La nina is killing us and it looks to keep the same dominant pattern throughout this years winter. As with last year all we can do is hope for something to pop between quick cool downs. Again, maybe February saves some of us when the pattern starts to relax some.

Latest seasonal forecast:
View attachment 98353

Look familiar?
View attachment 98354

Do I dare say "just wait until next year"?
View attachment 98355
My only hope is that the pattern flips sometime in early Jan as many are expecting and we are given a 2-3 week window. La Ninas and February usually means warmth for the SE,especially for the Carolinas due to the SE ridge that comes with most La Ninas.
 
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I notice some things, we’re loosing the pacific rex look and just turning it into a more classic ridge>-PNA trough combo, more rex I’ve noticed delays the more conus trough type of look but means a stronger 50/50 low and cool Carolinas , but the more W>E ridge trough combo I’ve noticed speeds up the conus trough look with cold finally making it, but means medium term more ridging and more torching
 
My only hope is that the pattern flips sometime in early Jan as many are expecting and we are given a 2-3 week window. La Ninas and February usually means warmth for the SE,especially for the Carolinas due to the SE ridge that comes with most La Ninas.
If the -NAO is indeed west based and has any staying power I would imagine we'd see some favorable H5 looks. Even last year had some great H5 looks and good storm tracks. The -NAO got a bad rap last year by some. Mostly the youngsters who were like 10 years old the last time we had one in 09-10 and first part of 10-11. Those two winters were good. Looking back at some of the great winters of the 60s and 70s in the east they had a -NAO. The lack of cold ruined it last year. And we still had some very close calls. I'm sure someone can dig up a winter somewhere that had a west based -NAO that never got a favorable H5 pattern, but it has to be rare. So this year if it has any staying power with the cold available I feel decent about a window with a good pattern. It very well may not snow due to bad timing and lack of moisture but we'll see.
 
My only hope is that the pattern flips sometime in early Jan as many are expecting and we are given a 2-3 week window. La Ninas and February usually means warmth for the SE,especially for the Carolinas due to the SE ridge that comes with most La Ninas.
Yeah. I'm sure we will. At least I'm hopeful of that (being a cold weather lover). There have been some good la nina winter events (...1996). I just think our chances will be less with this ongoing la nina.
 
The cancel winter everyday crowd is quite annoying especially when things are going right for a decent pattern change with cold and more snowy potential pattern December 27- January 3rd when we’re just getting into good climo months to get snowfall?? I assume they are just trolling because anyone who comes in here and actually digests the content would understand were in a good spot right now in seeing a very good pattern change
 
Yeah it seems that basing forecasting on where the MJO is headed in January is a fools errand. The most reliable indicator it seems is pattern persistence. Sure it has to change eventually but that might be March for all we know.


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I wouldn't think it would take long. It's hard to get ridging in the EPO and NAO regions at the same time to start with. Much less sustain it. These weird looks the models are spitting out is during this time frame we have both. My opinion we'll lose one come January. If it's the NAO we may have problems but it's anyone's guess at this point.
 
Yeah. I'm sure we will. At least I'm hopeful of that (being a cold weather lover). There have been some good la nina winter events (...1996). I just think our chances will be less with this ongoing la nina.
Like said earlier don’t see why people are shocked of this pattern with the La Niña way it’s setting up and been. The number one analog was 11 12 winter going in this winter , seems be following suit .
 
Yeah it seems that basing forecasting on where the MJO is headed in January is a fools errand. The most reliable indicator it seems is pattern persistence. Sure it has to change eventually but that might be March for all we know.


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It's not if you know what you're doing. As for the latter, that's nonsense.
 
Like said earlier don’t see why people are shocked of this pattern with the La Niña way it’s setting up and been. The number one analog was 11 12 winter going in this winter , seems be following suit .
It's definitely not 11-12 in my opinion. We were way colder in November this year that 2011. We probably will be warmer this December than December 2011 which sucks. But that winter was dominated by deep AK vortex and not even a sign of a -NAO. In the end we may indeed end up warmer that that year with not even a sleet pellet. But if we do we're going to do it in a different way.
 
I wouldn't think it would take long. It's hard to get ridging in the EPO and NAO regions at the same time to start with. Much less sustain it. These weird looks the models are spitting out is during this time frame we have both. My opinion we'll lose one come January. If it's the NAO we may have problems but it's anyone's guess at this point.
Probably the -NAO we’re gonna couple it to the strat per models, I have a good feeling about Jan
 
Here’s the answer: These 5 periods are the only two week plus long cold periods at ATL since 1950 that were during a -PNA:

- 12/29/1967-1/13/1968: 0.2” + 2 Ts of SN
- 12/1/1968-1/16/1969: 3 Ts of SN
- 12/27/1978-1/9/1979: 2 Ts of SN
- 1/24/1979- 2/21/1979: major ZR & 4.4” of sleet from different storms
- 11/27/2010-12/25/2010: 1.3” Christmas snow (only measurable one on record?) plus 3 other trace to 0.1” wintry events.

So, what did these rare five periods have in common to be able to get that longlasting cold during a -PNA? A -AO and a -NAO were both present every time with them being quite strong during most of these 5 periods. A -EPO was present only during 3 of the 5 periods….so, not crucial. ENSO wasn’t crucial. The key is the strong -AO and -NAO. Furthermore, note the multiple wintry precip events during all 5 periods.

This is relevant in case we never get out of the -PNA to see if there’d still be much hope for sustained cold in the SE. Whereas a +PNA would certainly be most preferred, these five periods show that given both a strong enough -AO and -NAO it is still a reasonable possibility.

Both the AO and NAO forecasts are even more negative today per GEFS, our best hope for a persistently cold couple of weeks even if we don’t lose the -PNA although even it is still forecasted to approach neutral in 2 weeks:

AF6EB179-03A1-4FBC-887B-601F37865007.gif521D2FF8-FBAF-4736-ABB7-30ECE0514E0B.gif
 
The cancel winter everyday crowd is quite annoying especially when things are going right for a decent pattern change with cold and more snowy potential pattern December 27- January 3rd when we’re just getting into good climo months to get snowfall?? I assume they are just trolling because anyone who comes in here and actually digests the content would understand were in a good spot right now in seeing a very good pattern change
A snowy pattern for I-40 and North maybe. I don't see anything to be optimistic about for the I-10 and I-20 crew.
 
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