An increase in low-level moisture will occur today from TN northward
to the lower OH Valley, in advance of the surface cyclone/cold front
and west of the ongoing convection across AL/GA. Some surface
heating will occur ahead of the front per morning satellite imagery,
which combined with the moistening, will result in a corridor of
moderate buoyancy extending northward from northern AL across middle
TN into central KY, and perhaps southern IN. Convective initiation
is expected along or just ahead of the front by mid afternoon, with
sufficient cross-boundary flow/shear for discrete storms to move off
the boundary. Deep-layer vertical shear and buoyancy will favor
supercells capable of producing large hail and damaging winds, while
a branch of the low-level jet across TN/KY will provide sufficient
low-level shear for isolated strong tornadoes from about 21-02z.
PLEASE MAKE SURE
