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Wintry Machine Learning Mauler 1/30-2/1

Question / analysis:
So we should be close to "go time", how's the important features moving / developing at this time. Examples; is there current signs the coastal low will develop and then move closer to the coast, is the ULL separating more or stronger or south/north, and I any other features affecting the setup.

That stuff is out of my knowledge range..
^^ This ^^ I think it would also be a learning experience for a lot of us.
 
That was a surprise after getting the WWA earlier now upgraded to WSW. Will be interested to see FFC video briefing today. But nobody is taking this one seriously around ATL. Probably a result of last weekend being so hyped and then not much for ATL. Really tough job being a winter forecaster in this area. FFC does a great job though! It’s up to the public whether they want to listen.
FFC has certainly drawn the short stick in the SE region so far. The 2 nearly impossible winter weather scenarios for this area hit them on back to back weeks. Ice storm and ULL setups are the worst for NE Ga to forecast.
 
Yeah, I think FFC is doing this not so much because a ton of snow is being forecast, but because they remember the crippling chaos in 2014. I seem to recall some commentary that they reserve the right to issue a WSW if the impact of the weather could be severe, even if the accumulations fall below typical criteria for a WSW. In this case, it's going to be really cold, and the snow is going to stick to the roads, hopefully not like 2014, but possibly.
 
Gfs looks awful 😞
Not for everyone...
snku_acc-imp.us_ma.png
 
I only get about 8" here with that run lol...nice to see some of the recent models reversing the overnight trends with that ULL. I can't wait to see where the coastal starts forming. This could be a really special storm for a lot of people.
 
I only get about 8" here with that run lol...nice to see some of the recent models reversing the overnight trends with that ULL. I can't wait to see where the coastal starts forming. This could be a really special storm for a lot of people.

So I am still learning, but can you give me like an overview as to where the models are saying the low will be forming?


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Braves Fest is cancelled

Had multiple fellow A-List members reach out to me yesterday, which gave me a chance to inform them and urge them to pay attention and prepare. I talked to my ticket rep and told him the way the forecast was trending, I wasn’t planning on attending. Hate it, but they had no choice but to cancel it.
 
Can’t lie it’s coming down way harder than I thought it would, roads starting to get slick again.
Its snowing light to moderately but the sun is trying to peak through, shows the first tongue of snowfall is mostly based in the lower to mid levels
 
2 more model cycles to go. 2 more northern ticks you think?

I hope...but I can't tell you how annoying that 50/50 has been...the one time in our lifetimes it's just refuses to lift out just a little. Could have made all the difference....

gfs-deterministic-namer-z500_anom-1769774400-1769893200-1769893200-20.gif


AI-GFS/Google - now on top of each other. A broad swath of 3-6" across the Carolinas is coming...now who jackpots and gets 8-10" is still debatable. But my money is on the CLT area and the Greenville, NC area. And of course...who dryslots...some small area is going to get 1-2" between I-77 and I-95 with the dryslot/precip min.

Google-GFSAI.gif
 
I hope...but I can't tell you how annoying that 50/50 has been...the one time in our lifetimes it's just refuses to lift out just a little. Could have made all the difference....

View attachment 191822


AI-GFS/Google - now on top of each other. A broad swath of 3-6" across the Carolinas is coming...now who jackpots and gets 8-10" is still debatable. But my money is on the CLT area and the Greenville, NC area. And of course...who dryslots...some small area is going to get 1-2" between I-77 and I-95 with the dryslot/precip min.

View attachment 191823
That’d be Concord in the dry slot. I promise!! You can all relax now..
 
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That’d be Concord in the dry slot. I promise!! You can all relax now..
No model is showing a dryslot in Concord...thats one thing you don't have to worry about. If I could be anywhere in this even it would be PGV first and then CLT metro 2nd. CLT metro might not jackpot but it will be 4-6" easy.
 
Not to get ahead of the storm, but we’ve ticked down our forecast low Monday morning all the way to 6 degrees. Not record territory but some of the traditional cold sinks in eastern NC and SC might have a shot at the big goose egg. Last 0 reading in these parts was 2018 on an unofficial station.
 
The 4 12z OPs, so far, roughly inline...AI-GFS/GFS/ICON/CMC

All show that PGV jackpot zone...they are best chance to get 10"+. If you wanted to chase....

View attachment 191832
So far, the ICON was the furthest north with the ULL vs the other physics/AIGFS. Starting to get a good consensus average and a better idea where generalized QPF expectations should be.
 
I know everybody is bust-conscious -- but don't forget that there is big upside to this one as well.

And as I type that, the 12 GFS closes off the upper low over Tennessee at 24 hours.
I personally never believed a column like this and antecedent conditions were ever possible here
 
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