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Pattern December Doldrums 2025 🎄 ❄️

Models have been hinting at a Lee side streamer of some sort Monday afternoon. Will be rain here if it even happens, but maybe northern nc foothills could get a surprise from it? Though they’re torching with a surface warm bubble too (prob a source of the lift). But the freezing level is really low there so it would reach the ground as snow I think.
 
Models have been hinting at a Lee side streamer of some sort Monday afternoon. Will be rain here if it even happens, but maybe northern nc foothills could get a surprise from it? Though they’re torching with a surface warm bubble too (prob a source of the lift). But the freezing level is really low there so it would reach the ground as snow I think.
I'll be honest, trends have been towards a NW Flow favored system. Likely just going to be some big NW flow, likely breaching containment, ASSUMING things don't downtrend.
 
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Maybe the GFS will hold us over till the 00z cycle gets here


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Looks like some heavier rates in there, what do you think Grit?


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Ha, I was kind of hoping we would shoot a weak gulf low into the Atlantic and get it out of the way, then bring in the upper wave, but a stronger version of it, and have it do its thing. That type of setup would be colder, but with lighter precip. GFS wants to go heavier rain to snow with the trailing wave not diving far enough south. Blue colors on the model now, but don't know if that ends well come game time (but good for those to the N and NW). We'll see. At least we're not staring at ++AO and mega SE ridges.
 
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ukmet is especially strong with the streamer stuff and it did a good job predicting similar activity with our “storm” from last February. Unfortunately, it’s going to be very warm at the surface on the Lee-side Monday afternoon though. But maybe rates will overcome!

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End of the UKMet run had a clipper coming in next Thursday with another in the pipeline there over E Nebraska

Dec 5 UKMet.gif
 
The issue is not having a valid api key from Google to make the maps with Python, grads, etc.

I'm assuming you guys have access to the bigquery, or an API of some sort. Not sure Googles going to go for publicizing it, and I personally feel like they are very much into using that zarr format they also have to push people into using their cloud services, since it seems when you request and are granted access, it's through that
Correct - I applied and was granted access to the dataset on both BigQuery and Earth Engine (EE is by far superior for processing, IMO). I also agree that the odds of us being able to make the data public as a company are low.

That said, Google will have a hard time finding and tracing a random, unlisted GitHub site w/ an assortment of maps back to my API key. That’s likely the move regardless of their terms of use. They have bigger fish to fry.
 
That GFS run looked good for some of us who missed out on today's fun and games. I'd love to see a classic Miller A develop off of the coast with a cold air mass in place. Let's hope this run isn't a one off and the beginning of a trend that the other models will catch up to. I'd be happy to see a couple of inches of snow next week to get me more in the Christmas spirit.
 
Starting to get some miller A characteristics here, especially with the SW Piedmont/upstate screw zone View attachment 178137
Anyone have the 2010 Boxing Day storm maps? This one reminds me of it somewhat with upper level energy diving down and hitting the baroclinic zone off the coast, igniting lift and more cold air injected. Obviously, not expecting that much this time since this one does not look as dynamic or as cold.
 
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