The latest NAM data has become available. QPF totals have risen to over 0.50 inches water.   Upper atmosphere temperatures marginally support snow or snow mixed with sleet and ice pellets early morning in the immediate PHL area.  Inner western suburbs willl likely be all snow.

The upper atmosphere cools causing precipitation to be all snow by late morning  or early afternoon.

Surface  temperatures about 30-32 degrees for much of the day.  Winds will be light.  It will feel like less of a “storm” and more of a light gentle snowfall that accumulates over the duration of the day.

Snow starts before daybreak with a coating to an inch expected by daybreak.  The snow or snow/sleet continues at a light rate becoming all snow by afternoon. Slightly heavier snow during the mid to late afternoon before ending about 7-8 pm.

Depending upon the amount of morning sleet, snowfall totals 3-5 inches, possibly 6 if it’s all snow.

The GFS data becomes available in about an hour .  I’ll update if things change.

10:45 pm update GFS model similar enough that I’m sticking with the above Forecast.