Snow amounts should be around an inch in the areas of Bethlehem, Easton and Phillipsburg, and perhaps up to a couple inches the further north and east you go up into the Slate Belt and Warren county NJ.
From the NWS:
SOME SNOW TONIGHT INTO FRIDAY MORNING SHOULD ACCUMULATE 1 TO AS MUCH AS 3 INCHES WITH THE HIGHEST AMOUNTS THE FARTHER NORTH ONE GOES. THE SNOW COULD RESULT IN SLIPPERY CONDITIONS ON UNTREATED SURFACES.
(map courtesy of National Weather Service)
The disturbance will move away and conditions begin to improve during the day Friday, setting the stage for a pretty good weekend, with sun and temperatures near 50 degrees!