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Pattern February 11-13 2025

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Not sure how many more ticks we can get out of this -NAO block/shrinking of the ridge over the SE, would like to see this continue. 12 GEFS did follow the OP this run


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I'm not gonna let the ICON or south trends on the GFS/GEFS suck me back in. I'd all but give up on this and that's still where I'm at with it

Yeah, this one died when EPS lost it a couple days ago. I’m a weenie so it’s not like I’m going to not watch it, but yeah this I still think is a dc and north storm based on the ridge.
 
I highly doubt we trend back to snow but I still would watch out for ZR around I-40/the foothills and escarpment. Certainly could go back that direction

Agreed. Historically, it’s not be uncommon for those areas to get ice when the Mid-Atlantic gets their big snowstorms. Not so enthusiastic out this way, but will continue watching. I don’t think it’s out of the question it could trend better for us, but it’s certainly a lesser possibility.
 
Wait, so if 925s get to below freezing around clt this run, I would guess the surface is colder. Does Euro show an ice storm in the piedmont now?
Verbatim, on the Euro 2m temps are in the mid to upper 30s in those areas. Historically, I want to say the Euro tends to be too warm at the surface in CAD situations, though (this has certainly been the case in past storms, like the March 2014 ice storm in the Triad when it was awful, but I’m not sure if it’s true these days or not). I’d certainly expect colder with those 925 temps.
 
I know how folks feel about this model after it’s rug pull, but it’s in a better timeframe and is following current trends on other OPs/ENS, but the AI does have a stronger wedge this run with a ice event for the NW Piedmont/parts of the triad/foothills and escarpment
 
I know how folks feel about this model after it’s rug pull, but it’s in a better timeframe and is following current trends on other OPs/ENS, but the AI does have a stronger wedge this run with a ice event for the NW Piedmont/parts of the triad/foothills and escarpment

Can to share pictures


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I know how folks feel about this model after it’s rug pull, but it’s in a better timeframe and is following current trends on other OPs/ENS, but the AI does have a stronger wedge this run with a ice event for the NW Piedmont/parts of the triad/foothills and escarpment
Trying not to get sucked in but these trends back south again are pretty stark attm
 
Looking at the free maps for the 12z AI Euro, definitely an improvement and flatter, but still all-rain for most of us. The AI Euro has multiple very cold rains for central NC during the run, which is fun.

Definitely the kind of improvement where if it kept on ticking like that for another day, it would have big ramifications, but that probably won’t happen.
 

Someone may have posted this already, but Tomer Burg created on his site estimated precip types to go with the AI model. Pretty neat.
From my understanding is he calculates the upper level and surface temperatures to detect ice sleet snow. It's what the AIFS should already offer, but yet again, this "amazing model from the future" has maps from 1983.

So the Ptype maps he make are okay but they will probably be a bit coarse on the Ptype transition areas. Use at own risk for forecasts Ptype zones in other words.
 
18z ICON backs off a little from the wild solution it had at 12z, a tick further north. Not a huge shift either way, though.

18z GFS ticked a little further north compared to 12z by my eye, as well. But pretty similar.
 
4 FEET in NE PA…. Yea, eat a bag. What did they ever do to deserve the literal best 4 weeks in what ? 40 yrs?


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