Bombogenesis is well underway (nearing 985mb and dropping)... Expect this historic nor'easter/blizzard to continue to wrap up as phasing completes. I expect to see an "eye" like feature tomorrow morning when the sun comes up. Sure wish I was in southern New England tonight! Enjoy!
UPDATE - 2am:
The pressure measured at a buoy southeast of Nantucket appears to have bottomed out at 973.5 millibars (28.75"). The center of the cyclone may not have passed exactly overhead, but it came close, and ~973 mb is probably a good estimate of the current central pressure of the storm. (Via Stu Ostro)