Cat 2 on NESIS and Cat 3 on RSI, I think the latter is a far better representation of this storm’s magnitude despite not quite hitting all of the population centers as hard as it could’ve, like some in the past (PDII, Jan 1996, Feb 1983, etc). If the core Boston area had gotten 2 feet instead of 15”, it’d easily be a Cat 4 on the RSI.