06z GFS usually comes in dry or warm it seems. Everyone panics then 12z calms folks down. To see it give us a decent event gives me hope. Also, GFS seems to handle northern stream storms better than the Euro.
Set your sites reasonable. Expect an advisory level event. This is going to potentially be another event that we could steal within a week of being close to 20 degrees above normal.
FWIW, 18Z GEFS is more enthused than OP for snow. It has a 60% chance that DCA, IAD, and BWI exceed 1" snow. That's usually a good sign for an advisory level event in these parts. I'd post the graphics but they're through a paywall site.
Really happy for you southern folks. We always cash in while you mix or flip. Even better is that you stole a storm from within 60 hours! Big winner today might be the GFS though. IMO, big win for American NWP.
NAM is north. 18z had the surface low in SC, 00z has it in NC. If you're south of I-70, you look good for a solid event. Really amazing how this event has appeared out of thin air.