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Pattern Dazzling December

I took it as he just doesn't believe there is enough cold in the Arctic anymore to have the same effect it used to. The evolution of dumping out west sliding east like 2010 is showing up in modeling from what I see. It's just not cold air.
I understand that, but I’ve look for studies about this and there really isn’t anything specific about it.
 
Trend loop of last 5 runs of GEFS for Dec 17. Biggest improvement I like is keeping the NE Siberia low out of Alaska

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I understand that, but I’ve look for studies about this and there really isn’t anything specific about it.
I always really liked this graphic below when looking at NAO and cross referencing some of my best storms/seasons on the east coast. 2010 was basically off the chart. Early 90's were awful. But yeah I would need to see some studies that these indices don't matter as much.

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Man this takes it’s sweet ole time getting here. Getting close to under 240. But I feel like we were saying this the last couple of days. Not lining everything getting pushed back. This looks like a more healthy push of cold air than the 18z run though. Not a fan of it coming from the west ugh
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The complete 180 the gfs just did is quite remarkable but almost predictable with how ensembles have looked. CMC is showing something similar but we may have to seriously start looking at the potential for some significant severe weather if this sort of thing holds. Just an amazing temperature gradient and strong southerly winds bringing up warm moist air. This along with plenty of shear on tap means a severe threat is certainly on the table.

Not only this but check out the change from one run to the current .. the +PNA just exploded and things are about to get very cold and backed up here soon. 99F6E4E1-C51C-4FC9-A320-917EFCD4069E.jpegAF13E59F-5800-4BAF-AA90-E06BCCC675E2.jpeg
 
Here’s an in depth look at the severe ingredients. Things can change but these big time winter polar fronts mean business’s in meteorology and are some of the biggest producers of severe weather due to the extreme temperature gradients they can produce. This polar front is something that continues to be produced on the models. Not only that but some low cape values plus high temps/dews and strong shear means some problems for someone in the south. And of course check out the extreme switch up behind the front.12E07DFA-508A-4AB8-B5CA-30D6DAEB1DF3.jpegA5563B63-AB40-4CFD-B2DE-7127565B3710.jpeg8422A685-1E55-4254-B8F8-34443C7D61ED.jpegE0F3B076-AC90-4007-ABA6-76F1E2533724.jpeg
 
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The cold is coming y’all, finally seems like we’re not delaying things any further.

Right after that severe front. Something kind of happened like that in early January which flipped the pattern. The question is, will a +PNA develop? How long will the cold last? Will be interesting.


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Wouldn’t completely jump on and off board with every run (you’ll get a headache and disappointed too many times) :) but I’m optimistic this pattern produces some sort of cold in late December
In my opinion it’s with this northern plains snowstorm that puts the pattern in motion. Obviously there is many other things that can happen to hurt our chances but I’m fairly confident with this.
 
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