3k NAM, Euro and GFS have the 2M temp below OC between 0Z and 6Z Friday (Thursday evening) at Moyock and HR so I am thinking if that holds true, most of the night below freezing with the ground already near freezing should allow for surfaces to freeze by the middle of the night. NWS is calling for temps just above freezing later on Friday briefly, but models aren't agreeing with that and if enough frozen precip falls before that point it likely won't make it above 0C at the surface. Lots of unknowns for sure but erring on the side of caution because of that and data pointing to a Thursday night freeze, that's what I am going with.