Tonight’s GFS data just became available. No major changes.  The GFS QPF remains about 1.80 inches water and the snow ends early  Saturday evening.

With these situations, averaging the NAM and GFS QPF values gives us 2 inches water falling as snow through early evening Saturday.  A guess at 13-14 inches of snow for each inch of water will give us a range of 25-30 inches of snow for the immediate PHL area.  Areas far north and west may get more if the  NAM is correct.  Drifting will make areas of snow seem deeper.

Let’s hope the power stays on.  Now, it’s time to see what actually happens.