Its almost certainly just trying to break the pattern down too early. The EPS really has looked nothing like that aside from one system that may cut or semi-cut during the brief moderation
Correlation coefficient still showing the R/S line more or less straddling interstate...85 I believe from ATL airport down about 20 miles or so but it is pushing ESE
The Obs over AL in that snow band are not impressive, but the 700-850mb temps in that area such as MGM are not anywhere near as ideal as they will be over the ATL metro. Many places are -1 to -2C at 700 while ATL will be near -7-9C at 09z
I can’t tell really on the 12Z RGEM but it appears to be not as amped as the 18z NAM in your area either. The ukmet is darn close though. 850 is like -0.4C in ATL the entire event
Be real careful with the warm ground deal. I find that doesn’t work often. If you’ve got a December sun angle and you snow even one half inch per hour the warm ground deal doesn’t often hold up. Many places jn GA have been in the 40s now for 36 hours plus. I always bring up Albany NY being 85 degrees and then seeing 15 inches of snow the next day
The GFS didn’t see the warm nose in that storm. Unfortunately the nws and many forecasters bought into it partially and kept snow totals too high when it was evident the event was likely going to be mostly FZRA
I would be shocked if ATL got anything big from this. It’s possible but making a forecast here you really have to go just up to 2 inches on cold surfaces. This isn’t a closed low or dynamic system where intense rates are likely and it’s occurring at a bad time of day for accumulation. One factor I think that is killing this for ATL is what I call “early wet bulbing” where you get precip too early before dry air really works in and when you finally do start going to all snow you don’t have the potential you would have had if you stayed dry. If for whatever reason the precip from 23-07Z stays south of ATL and they can get to 23-24-25 on dewpointa this even becomes much more dangerous for them
Through late Friday afternoon it appeared like it was going to possibly came way west but then thereafter that it appeared to be flatter and more east. It was definitely more west for AL/GA on the precip but areas further up the MA region it was more east and drier
The new SREF definitely sort of hints what the Euro showed. Things looked better thru 54-57 then it wasn’t as good as the previous run after that especially more north