Here's the discussion given by the SPC.
RISK FOR ISOLATED DAMAGING WINDS AND MARGINALLY SEVERE HAIL IS EXPECTED TO DEVELOP/INCREASE THROUGH EARLY/MID AFTERNOON ACROSS PORTIONS OF KY/TN AND NORTHERN AL INTO WV/FAR WESTERN VA. GIVEN EXPECTATIONS FOR A RELATIVELY ISOLATED/MARGINAL SEVERE RISK...CURRENT THINKING IS THAT A WATCH IS UNLIKELY.
The SPC is thinking that storms should continue to form and grow in and around the MSD areas throught the afternoon hours. Damaging winds is the main threat, but there is also a slight chance at some severe hail.