With the change to daylight savings time, the evening model data now comes in an hour later.

The latest NAM shows a significant change in the forecast. Essentially, high pressure suppresses the moisture to our south, allowing most of the precipitation in areas just south of PHL. It will be very wet snow or snow mixed with rain in PHL.  Little accumulation if any.

Additionally, the moisture arrives earlier, on Saturday during the late morning and afternoon , so light showers or showers mixed with snow is all we get tomorrow afternoon and early evening.   Surface air temperatures and ground temperatures really too warm for any accumulation.  Perhaps a coating or so on grassy surfaces.  The total QPF is less than 0.10 inches.

Sunday looks to be just cold and a mix of sun and clouds.

The GFS data is just becoming available at 11:30 PM and seems to support the NAM forecast, although its QPF is about 0.20 total.