Ahead of the front, a seasonally moist airmass will be in place,
with mid/upper 60s F dewpoints common. While midlevel lapse rates
will remain modest, heating into the 80s F will support 1000-2000
J/kg MLCAPE. Deep-layer flow will remain mostly unidirectional,
though increasing speeds with height will support 35-45 kt effective
shear magnitudes across the Mid-Atlantic and southern New England.
As a result, organized supercells and bowing clusters are possible.
Steep low-level lapse rates and high PW values, combined with rather
weak low-level shear will favor damaging gust potential. Modest
lapse rates and somewhat warm temperatures aloft will limit the
large hail potential, but any organized/sustained supercell could
produce marginally severe hail.