We have also had three consecutive El Ninos that have been shitty for snowfall in the NE....I would have to look, but I'm not sure we have ever had four consecutive. Some of this stuff is a bit anecdotal, but I think it does have value in hedging towards more likely outcomes.
1987-1988, 1991-1992 and 1994-1995 is the only other example of three consecutive that I can come up with....
My early hunch is moderate to strong (sub 2.0) likely basin-wide El Nino with Modoki a lesser possibility.