NAM forecast valid 06z December 15
Notes:
This 4 panel display is an 18 hour forecast valid at 06 UTC on the 15th from the NAM showing 500 mb heights and vorticity in the upper left, sea-level pressure and 1000-500 mb thickness in the upper right, 700 mb heights and relative humidity in the lower left and QPF in the lower right. The short wave was forecast to be tracking east across NY and Pennsylvania at 06 UTC on the 15th.
Slide 6