Big tornado upgrade! I was on to something I guess ?
Farther south, greater low-level theta-e advection suggests that the
boundary layer will become at least neutral, and therefore greater
certainty of surface- or near-surface-based storms exists -- both
near the advancing cold front, and also with associated warm
advection-driven bands of convection in the free warm sector. As
noted above, very strong shear -- with south-southwesterly 850 mb
winds in excess of 50 to 60 kt increasing to west-southwesterly at
70 to 90 kt at mid levels -- is suggestive of supercells, and
attendant risk for damaging winds and several -- and possibly
locally strong/damaging -- tornadoes. As such, an upgrade to
enhanced risk is being introduced, centered across the Tennessee
Valley area from late afternoon through the evening hours.
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