Bothe the gfs and the cmc build heights rapidly over the east coast and se canada from 84-102hrs. It went from slightly more risging to a lot more ridging fast. Thats what caused the shift.
Given the wind trajectory and the northern stream, I think Boston will pull it off. Hard to believe the CCB is just gonna dry up when it gets to New England like models are showing.
Nevermind Icon does show 12" for Boston.
I don't think that the ridging over Florida and the Yucatan is going to allow for a negative tilt. Thats why its not bombing even on the runs that do show a phase. Kind of just an overrunning event on steroids like February 1994.
If the northern stream digs more further west it can certainly prolong it though.
I,m just hoping we can get 1" liquid out of this thing. Kind of feels like weak sauce if we don't. 2010 and 2016 were close to 2-2.5" liquid equivalent if I remember correctly.