thanks, something I found interesting well 2 things actually
1-- though 3" seems to be needed for average or above seasonal snowfall in la ninas it is by no means a guarantee of that. I see some years with 6" of December snowfall still end up below normal.
2- some years are close misses, like 1988-89 when Atlantic City got 19" of snow in a snowstorm in February and we got zilch. How much does that come down to randomization and we were extremely unlucky because we missed a huge snowstorm by a tiny amount? Are big February snowstorms rare in la ninas-- I seem to remember a few of them.