You're in a good spot for 1/10. Want to be northeast for that one. Seems like you'll at leats get decent snows in 1/7 too even if Euro was a little too happy at 12z.
Even this run gets warning crtieria snow to N ORH county over to N Berks....prob advisory type stuff close to the pike (and N/W of 495)....needs more work to look like the GFS/GGEM, but that was a nice improvement from 00z.
Yeah we nearly lost the lead wave on this run, but it was running NW of the previous runs, so it kept all the forcing near the coast and inland instead of getting swept seaward.
You can ignore the Ukie clown map close to the coast...it has a bad warm bias near the sfc, so it often shows rain like 10-15 miles inland despite 925 temps of like -3C.
On the point soundings for SE MA, it had a good cross-hair sig on the 12z run....your area may have been a little far NW on GFS for the real goods in that department, but it wouldn't take much of a move to get into them.
Seems like that trailing s/w being stronger in the 1/7 event plus it's trying to phase a bit with that northern piece traversing the N stream is locking in the confluence better for 1/10 on some of these runs.
Leading wave does look stronger through 54h on the 12z run vs 06z....the trailing wave is also closer....might try and get a quasi-capture on this run like the Euro? We'll see.
For American models (GFS and NAM), I still think PSU is one of the best combos of decent graphics and fast updates. Faster than TT usually on those two models.
http://www.meteo.psu.edu/ewall/ewall.html
It isn't because the storm usually consolidates onto one shortwave/vortmax. But this is the type of situation where it could not do that if that front runner gets sheared quick enough....my personal gut feeling is that the front runner survives enough for a decent event from that piece of energy with maybe a little lingering -SN from the trailer. But prob not one of these 30-36 hour deals.
That's kind of what the 06z GFS did....maybe weakened the first s/w slightly too miuch for your description, but it basically turned the event into a 30-36 hour light snow with maybe some moderate bursts for eastern areas Sunday PM as it tries to re-invigorate from the trailer shortwave before it exits.