Man the 18z gfs is going deep freezer in mid range.
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Pattern January 2020 - Operation Thaw Alaska
- Thread starter KyloG
- Start date
Yes it is the long range GFS but you have to like the trends today. Much more ridging out west on 18Z GFS and the 12Z Euro to help bring in the cold. Impressive 850 temps too and stronger high pressure with continental cold air mass.
All hail the happy hour!
Lows in mid 20’s all way down to gulf coast. Definite looking better now. 
Its not impossible to get something here
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The FV3 has something but it's too supressed
A stronger +PNA will help do that.
How do we get a stronger +PNA?
Get that ridge to tilt more positive rather than neutral.
Jon
Member
This is nothing to sneeze at. Some good blocking can dislodge that PV...or maybe a stout EPO, or even a wanna-be short lived faux -NAO. You can’t look at this frame and be giving up on the second week of Jan, and that’s why I like it! Hopefully we get some wild runs to come to bring everyone back down to earth. Prolonged cold maybe not, but we’re gonna have a pattern change first half of Jan!
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EPS members are everywhere passed 300hrs. No chance at identifing anything.
Webberweather53
Meteorologist
Should be interesting to watch the North Pacific storm track over the next few weeks. A deeper, equatorward, more persistent, & negatively tilted Sea of Okhtosk trough >>> stronger NE Pacific anticyclonic wave break & potential for a legit -EPO during the 2nd week of January.
Now look at the GEFS, notice this trough is faster, lifting, & positively tilted compared to the EPS >>> downstream ridge is more suppressed >>> less -EPO & more -PNA. We should be able to resolve this evolution late next week.
Now look at the GEFS, notice this trough is faster, lifting, & positively tilted compared to the EPS >>> downstream ridge is more suppressed >>> less -EPO & more -PNA. We should be able to resolve this evolution late next week.
As
As is often the case, subtle changes can have big effects downstream to our sensible weather. That trough can potentially alter the pacific high enough to therefore keep the low heights into the American continent and not just off shore like GEFS is showing. Honestly, it is just several hundred miles easterly for the wave pattern to move to give us the brunt of the trough and not the Rockies. Interesting find.
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Snow Jam 82 in Atlanta! This was a rather rare winter storm in that it was as or more impactful in N GA than it was in most of NC. I'll never forget that one OMG. An absolutely massive traffic halt suddenly started at ~3:15 PM on Tue 1/12 that I got caught in due to HEAVY snow (huge flakes started within minutes of the first flakes, which was 4 hours early....I was at school looking out the window and it was a wtf moment; keep in mind this was well before the web and practically all cell phones). That immediately stuck everywhere like cake frosting because It was heavy, it had been brutally cold 36 hours earlier (-5, coldest since 1899), below 32 for nearly 72 hours straight, and it was still only in mid 20s then (high that day only 26). So, they then let us out of school. But even after running like crazy to my car while trying not to slip, it was already too late. It took me 5 hours to get home 12 miles way. I was very lucky to make it home and without an accident because it was very slippery. It snowed heavily the rest of the day (4") and then changed to IP and ZR the next day (Wed) with the high then still only 29. Then the following day (Thu 1/14), a 2nd Gulf low produced another snow with a high of only 30, the 5th straight high not exceeding 30! Total 3 day accum was a solid 7" of SN, IP, and ZR that hardly melted into the weekend, when a 2nd airmass brought us down to 0! ATL only started to come back to life the following Monday.
Of all of the ATL winter events I experienced, this was easily the most memorable week for me due to a combo of the heavy winter precip., the coldest there since 1899/first time I experienced below 0, being right in the middle of the traffic disaster, and the city totally closing for nearly a week.
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What area were you living in ? There is a website called snowjam82.com that details this storm.