It probably won't matter in Central Park but the RAP has been too cold. It also has 13" near PHL and they've already gone to sleet.
HRRR has been pretty consistent in bringing sleet into much of LI, even up to me. I don't think it would cut down on accums too much and the warm layer isn't too thick (meaning heavier rates could probably overcome it), but if you're east and definitely south of the city, I'd hedge on pinging at some point in this.