The storm will need to manufacture its own cold air. I believe it will, and the rain that starts will change to snow for all of central PA. The higher your elevation, the more you will get. I will not issue any amounts at this time, but do expect some accumulating wet snow sometime during Tue-Wed. Remember it will start as rain.
Think about the day before Thanksgiving snow and you will get a good idea about wet snow and the importance of air temperatures.
More later Sun Afternoon/Evening.