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Pattern Dazzling December

GFS

500hv.na.png


Euro
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Euro
 
This storm associated with the TPV imho isn’t getting me as being the one, that’s my opinion, I hope it is, and I hope I’m wrong, and I may be wrong because it isn’t far away on the models that don’t have it, but history always tells us big deep cold vortex in place then energy rides the western ridge then we score, that look AFTER is what gets my attention, absolutely classic 8021CFAA-92EC-4BFD-9E7B-4D04D23B3B59.png
 
Signal is still there, that’s all that matters at this moment
Yeah, this is still a week away. need to stick with the ensembles until at least 96 hours out. Good news it that the GFS ensembles have not waivered. This time frame has been looking good for a week. Now, ..... If the EPS goes the way of the GEFS in bringing down the cold, then we can start looking closer to what may be in store. Right now, I am pretty stoked about the potential right before Christmas.
 
This storm assisted with the TPV imho isn’t getting me as being the one, I hope it is, and I hope I’m wrong, and I may be wrong because it isn’t far away on the models that don’t have it, but history always tells us big deep cold vortex in place then energy rides the western ridge then we score, that look AFTER is what gets my attention, absolutely classic View attachment 126698
Agree. If we score on the first, we really got lucky on a setup that generally doesn’t work.
 
The trends we need to focus on at this rate is the strength and trend of strength of that ridge out west. We get a taller ridge? More chance to score on the 23rd. Shorter ridge? We miss out on a big first event but set up better for maybe a 25-26 event.
I think we can agree that the Euro has been behind the 8 ball in the west coast ridging department the last few days. So we got that going for us, I guess.
 
however with a strong upper level trough moving over like that, and as we seen several and several times, light snow showers breaking containment is a somewhat intriguing prospect, typically associated with low DGZs so models don’t see it until short rangers see it. this by itself, is a huge win near Christmas 2E1AE57D-D1F3-4E06-B4BB-DB146247AD7D.png
 
I love all the interpretation of the modelling but, in my opinion, it's kind of like giving directions to someone in a place you are not familiar. Oh, the directions sound great but the chances of getting lost are greater for the poor sucker taking those directions.

The pattern modeled is a rarity with this anomalous pattern. I honestly think the precip/amount won't get dialed in until we are just a couple days out or even then. This chance for cold reminds me a lot of 1989 around and just after Christmas. That one happened to be dry and cold not the greatest winter afterwards (Birmingham, AL) This one has the looks of something rare and different.

I am with you guys on this rollercoaster though. Let's reel one in for the ages. It will be fun to track. Hell, it's been already! :D
 
Curius to know if the Ridge is playing a role in that.
Thats beyond my pay grade lol. The Ridge isn't quite as tall/sharp pointed as the gfs. One is the cause and effect of the other.
Ill be watching the trajectory of that southern stream energy everyrun now. Gfs has painted the picture of what it needs to look like at 500mb.
 
After the initial Arctic boundary storm that drops down mid-late next week, the Euro is plowing the closed low over the Great Lakes / NE up into the blocking Greenland ridge and breaking it down (less +PNA ridge contributes as well) - 1st loop

The GFS has a much better looking evolution where the closed low rolls up under the blocking ridge that retrogrades into Hudson Bay - 2nd loop

This slows things down and you can see how the next wave then starts to dig more sharpely thru the Rockies on the GFS (better) vs. the Plains on the Euro

This is a key piece to watch for with respect to follow-up storm potential which would be loaded with wintry potential if this could hit right given the influx of deep south cold air.

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