The next two days will not be the nicest. Tomorrow will be cloudy with an occasional snow shower or rain shower passing through the area. Accumulations will be limited to grassy surfaces.
The Friday storm has finally ironed itself out. It is looking to be a general 2-5 inch storm with rain at the onset (Thursday Night changing to snow by Friday morning. It will not be a nice day. Some roads could be pretty slick during the day on Friday so I would recommend taking it slow. A Winter Weather Advisory will probably be issued tomorrow for areas north and west of Philly.
Here is the general timeframe of the storm:
8:00 PM Thursday – Midnight Friday: Rain moves in from south to north
12:00 AM – 2:00 AM: Rain will eventually mix with snow and turn to all snow north and west of the city
2:00 AM – 8:00 AM: Snow (rain south of the city) will start to wind down and end by noon Friday
Here are some snow totals with no snow map (I have been having problems with the application I use for the map):
Bucks, Mont Co, Mercer, Chester: 2-4 inches
Philly south: 1-3 inches
Lehigh Valley: 6-8 inches
Note that these totals can easily change and areas closer to the city could receive more or less snow depending on the storm track.