WINTER WEATHER UPDATE

6:20 PM : Latest GFS and NAM show almost no snow accumulating in Philadelphia and much of NJ.  Areas north and west of Allentown may have more than an inch.

Latest GFS snowfall forecast

12:35 PM: Latest Canadian and NBM models show decreased QPF and temps too warm to accumulate near Philadelphia.  This supports the new GFS.  Some light snow falling, but not expected to accumulate. A coating, at most. The earlier NAM and NAM Nest are now outliers.


10:43 AM: Latest GFS just available has less than 1/2 inch for most of our area. Too warm! The HRRR has almost nothing.


Last update before I head out the door.  So many models, so little time!

Latest NBM, NAM-NEST and WRF-ARW available.    I’ll cut to the chase:

This morning’s NAM NEST high res snow depth
This morning’s lower resolution NAM snow depth

I think the NAM-NEST is the best bet and supported by the NBM.