SPC 0-3 km VGP and sig tor parameter - 21z
Notes:
The large CAPE and strong shear also resulted in large values of vorticity generation parameter (a function of low-level CAPE and shear) and significant tornado parameter (a function of CAPE, LCL height, 0-6 km shear, 0-1 km storm relative helicity and convective inhibition) maximized from northeast Pennsylvania southeast toward Long Island.
Slide 15