NAM12 9 hour forecast reflectivity and MLCAPE
Notes:
The 12z NAM forecast valid late in the afternoon on the 26th indicated a primary line of convective showers across Pennsylvania, co-located with the largest MLCAPE values, near just over 3000 J/kg. A secondary line was also trying to form to the northwest over southwest NY and associated with CAPE around 2000 J/kg.
Slide 15