I95 has been screwed by every 6"+ event advertised in the 3-16 day time frame since 2019. The one solid event January last year wasn't picked up until 36hrs out.
The GFS is getting uglier and uglier for California every run. They're going to have major flooding problems if it verifies. It's showing over 30" liquid in the northern mountains through 270hrs on this run.
The blizzard if 2015 definitely produced a pretty intense band over NYC. I suspect they get sound enhancement in a lot of other noreasters, but in 2015 it happened with very little synaptic snow around.