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Wintry Machine Learning Mauler 1/30-2/1

StormVista does this weird thing where it doesn't allow you to put the most recent weathernext QPF frame in a trend loop, so here is 0z for comparison:

View attachment 189432
It will but you have to let the run finish or just after. Yeah, super annoying...and the 48hr, 120hr snow maps don't work.
 
This is quickly looking like a lock for at least minor/moderate snow in the upstate. We should get something even with the less-amped solutions thanks to the Lee-side convergence zone as the vort passes overhead.

And the more-amped solutions are even better than that for us.
 
What models are not able to hone in at this point are things like Thermal profiles, placement of low and high pressure, track and timing. Looking at this synoptically, it seems this will come back some NW as we get closer to go time but how much is unknown. This will be determined by the movement of the high pressure to our North and the area where the cyclogenesus gets wound up. Even if it stays offshore (not too far) the precipitation field will expand further North and West than the models will show, happens every time.
 
Biggest fail mode here is if the vort pass starts trending farther to the north. That’s bad for everybody except maybe the northeast.
Would be concerned if we see weathernext trend this way the next few cycles but so far so good. Insane we are 108-120hrs out and not 240+.
 
I haven’t looked at the 5h maps, but this feels like it could be like the 2004 storm. Where you got a weak gulf low that gives 2-5 inches to Alabama/georgia, then a transfer to a coastal bomb that gives charlotte 2 feet… meanwhile my house gets a feather dusting.

Let’s hope it’s not that.

Edit: 5h pattern not all that similar
 
Biggest fail mode here is if the vort pass starts trending farther to the north. That’s bad for everybody except maybe the northeast.
Yeah, the two ways to fail is if the low sweeps out to sea quickly or if the northern stream is too far north and east and the storm doesn't get started far enough south. It would be a mid-Atlantic, Northeast deal.
 
I haven’t looked at the 5h maps, but this feels like it could be like the 2004 storm. Where you got a weak gulf low that gives 2-5 inches to Alabama/georgia, then a transfer to a coastal bomb that gives charlotte 2 feet… meanwhile my house gets a feather dusting.

Let’s hope it’s not that.

Edit: 5h pattern not all that similar
Oh hell you had to mention that disaster. At first glance yesterday that's all I could think of..was actually scared to look this morning. But now I think we are o k for a light event at least
 
I haven’t looked at the 5h maps, but this feels like it could be like the 2004 storm. Where you got a weak gulf low that gives 2-5 inches to Alabama/georgia, then a transfer to a coastal bomb that gives charlotte 2 feet… meanwhile my house gets a feather dusting.

Let’s hope it’s not that.

Edit: 5h pattern not all that similar
Oh yeah, that one was nasty for Oconee and Pickens counties. Little to nothing there, while I get 1 foot here and other parts of my county get 18+. I don't see it happening, but what this board needs is a Jan 1988 repeat. 95% of the board would be hit if that happened again. All the way from OK and TX to the Carolinas and VA.
 
Does this have any chance near atl at this point or mostly coastal?
I encourage you to read closely the maps @bouncycorn just posted literally 3 posts before yours, 20 mins ago, and see if you can answer your own question. If you’re not sure where Atlanta is without labels, can pull up a county map on Google. Really helpful when reading weather maps to find your own county.
 
The latest 06z WeatherNext Ens run was without a doubt the best one I've seen for the eastern / northeastern areas of the forum. The EPS and WNext are quite similar with the storm right now.....but where do we trend??

06z WeatherNext run…

Jan 25 WeatherNext 6z.gif


Jan 25 WeatherNext 6z Snow.gif
 
Does this have any chance near atl at this point or mostly coastal?

There's definitely a chance for some snow in ATL-Athens corridor if there's earlier cyclogenesis in the gulf. WeatherNext kind of hints at this. You would need the northern stream to dig futher west and south.
 
Yall the weathernext model is pretty much locked in and that’s saying something as it was locked in on this weekends storm at this range. I think this will be a decent storm for many on this forum.


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Let’s be careful. It isn’t locked in until the precip and height fields stop bouncing around so much from run to run. It’s almost there but for the last storm it was only locked at 120 hours. I’d wait at least a day.
 
Just just eyeballing the 6z Euro AI and trying to estimate what that looks like for GA specifically I-20 and then to East the most of this falls under very cold temps would be all snow and slightly better ratios. It's a 1-3 inch event for western counties and grows moving toward the Carolinas upward in totals

1769437491501.png
 
The latest 06z WeatherNext Ens run was without a doubt the best one I've seen for the eastern / northeastern areas of the forum. The EPS and WNext are quite similar with the storm right now.....but where do we trend??

06z WeatherNext run…

View attachment 189446


View attachment 189447
Grit, question--the orientation of this coastal NE->SW on its snow print looks kind of odd to me for storms that tend to form and move up the coast. What do you think is going on there?
 
No, IK it isn’t Set, but unless I see something other than a Bombing Coastal I’m not overly excited for Western Carolina’s. We need a traditional Gulf LP

77b920ad14090d8f316304baa3835d40.jpg


Granted I’m speaking for I-77 an West / NW in SC / NC

Track A - Heavier Totals (Ride the Line of RN/SN in Miller A)

Track B - Moderate Totals (Far enough NW No Rain in Miller A)

Track C - Imo Too Far NW I’ve scraped a 1-3” out out of this but primarily a East of 77 event


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