SPC 0-1 and 0-3 km EHI valid 6/23 00z
Notes:
An elongated northwest-southeast maxima of 0-1 km and 0-3 km Energy Helicity Index (EHI, a function of helicity and CAPE) was analyzed over northern Pennsylvania into south central New York. The maxima was co-located with the warm front moving east across the area.
Slide 11