Well peeps. Couple observations waking up here. Watching these things and learning more and more over the years I’ve learned in these setups how biases and known faults of a specific model suite rear their ugly heads. With the 6z OP GFS this is one of those. Pile driving the low up into or west of the spine of the appalachians is a known bias and I would hope that any Met would have my back on this, as I’ve literally seen it on numerous occasions, only to come back down to earth and readjust and align with other guidance. NOW with that being said, there has been a noticeable shift in guidance to allow this storm to be able to build westward due to numerous factors.
Want to point out a couple things from early morning guidance. End of the NAM run has probably the strongest HP in eastern Canada I’ve seen thus far on the models. HR 84 has a 1043 powerhouse sitting in prime position. If you look at the same time, GFS is several mb’s weaker. This is significant for a couple reasons, namely because of the NAM having superiority when it comes to low level resolutions that does best in CAD setups (yes I realize we are talking long range NAM) but also because unless the HP is screaming to get out of the way, the LP will more often than not behave accordingly and be pushed underneath the dense airmass. One thing to watch in subsequent runs and as the NAM comes more into range is how much it weakens the HP. OP GFS weakens it by 6mb’s within a 12 hour time however still leaves it in a decent place, just north of the Lake Placid, Plattsburgh NY area, around the time the system nears.
Now, looking at overnight and early morning runs of the GEFS and EPS, they are still seeing what my money was placed on last night and that is a more “conventional and traditional” track for big money snows north of an i-85 line (of course mix line will fall somewhere in-between I-40 and up to 460 potentially, just dependent on how strong the push of WAA ends up being)
All in all, I still believe this is a WNC, NC/VA border up into SVA beat down, with the system taking a Fayetville/Wilmington line and then into or just east of the VA Capes.