griteater

You had it correct though...that's the 12z RGEM thru hr 48, then it kicks in with the CMC Global after 48hr

This is like an exact climo southeast snowstorm...why do we need to spend 80 hours a day looking at this stuff

You can throw the SC mtns in there with NC and GA mtns, ha...Caesar's Head

The Euro just locks the 35-37 degree type temperatures and dewpoints for the entire storm east of Atlanta to upstate to southern foothills to southern piedmont.....doesn't budge a millimeter

My own analysis of where the Euro is supportive of snow (without regard for the snow map or precip type algorithm on the model): 1AM Fri: Snow in GA and NC Mtns, and northern NC foothills 7 AM Fri: Snow just N and NW of ATL into SE TN, GA and NC Mtns, northern NC foothills 1PM Fri: Snow NW side of ATL metro into NW and N Central GA into SE TN, GA and NC Mtns, northern NC foothills 7PM Fri: Snow NW side of ATL metro, GA and NC Mtns, northern foothills, NW Triad 1AM Sat: Snow NW side of ATL metro, GA and NC Mtns, northern foothills, Hickory to NW Triad 7AM Sat: Snow N side of CLT to Hickory to Triad Just S and E of these areas, there could be some snow where precip bursts and cools the column...or rain/snow mix Having said all of that, I wouldn't be surprised to see the Euro a little warmer than this on the 00z run

For your area it has decent precip into Sat AM, winding down late morning / lunch

The Euro moved NW with precip...it now has 0.5-0.6 along the eastern Blue Ridge escarpment.

Here are the Charlotte surface observations from the Nov 2000 storm. It probably won't be this cold, but similar setup relying on precip to cool the lowest warm layer in the atmosphere http://mp1.met.psu.edu/~fxg1/NARR/2000/us1119.php

Looking at the isobars there, you can see how Alabama and Georgia have more northerly wind component trying to feed in cold air...whereas SC and central NC are struggling in that department

It looks a whole lot like tonight's CMC and GFS based on the early maps...more detailed maps come out later

As long as the system doesn't just collapse on the models, yeah, it usually nudges NW at the end. Had weaker model runs this aftn and evening, but we still have a storm

Well, this may put more folks east of the mtns in play for some flakes if temps cooperate (a big if)...regardless, there is usually a little NW nudge with these systems before go time

New UKMet looks like GFS/CMC

Storm wise, the CMC was very much in the GFS/Euro camp this run

GFS is actually a little flatter than 18z at 500mb

GFS out to 21 and I don't think it's going to budge....height field across the SE is an exact match and little change out west

ha, never sweat the NAM run...gotta see the globals

NAM out to 22 looks closer to 18z than the big 12z run

Thoughts: 1. My forecast map is based on where I think the models will end up, not where they necessarily are now. 2. I like a more amped up solution closer to the UKMet and CMC. Warmer. More precip back to the west, even more than shown - models are notorious for being skimpy with precip on the NW side with Miller A's. Also, jet structure (right entrance region of strong jet) is excellent for building precip back west. 3. I was mainly focused on NE GA / SC / NC on the map...didn't look hard at N GA into Bama or other states.

I dusted off the model performance thread to capture the difference here with GFS/Euro vs. CMC/UKMet https://www.americanwx.com/bb/topic/49398-southeast-winter-storm-threats-model-performance/?do=findComment&comment=4682114

It's kind of amazing how the Euro has fallen from how it used to be regarded

Euro is taking a baby step, but not a big one

Can have NE winds without cold air damming though. We have north winds right now

UKMet 850 and Sfc Temp panels are out. It runs the 850 low thru the heart of GA to NC. Looks really good for GA mtns to NC mtns...iffy just east of there

Super dynamic storm...strong, closed off 850mb low. A low that tugged to the coast is normally not good for GSP to CLT