Mesoscale Discussion 0633
   NWS Storm Prediction Center Norman OK
   0620 PM CDT Mon May 18 2020

   Areas affected...central Ohio southward into central and eastern
   Kentucky

   Concerning...Tornado Watch 193...

   Valid 182320Z - 190115Z

   The severe weather threat for Tornado Watch 193 continues.

   SUMMARY...A tornado or two remain possible within WW 193. The
   tornado threat should persist longer across central to eastern
   Kentucky through 9 PM EDT.

   DISCUSSION...Recent RAP mesoanalysis continues to show sufficient
   values of 0-1 km SRH between 100-150 m2/s2 from central OH southward
   into central to eastern KY. With a tornado already reported this
   afternoon within this environment, the threat for a tornado or two
   will persist for at least the next hour within the entire watch
   area. This threat is expected to gradually diminish across OH within
   the next 1-2 hours as modest MLCAPE across this region  decreases
   via boundary layer stabilization due to a growing stratiform rain
   region. Further south across central to eastern KY, an organized
   QLCS will continue moving eastward into an environment that remains
   somewhat untouched by prior convection and precipitation, as
   suggested by MLCAPE values between 500-1000 J/kg. Although deep
   layer shear vectors oriented along the line of storms will continue
   to favor a linear storm mode, the combination of low-level
   directional shear with sufficient instability should allow the
   tornado threat to persist further into the evening hours.

   ..Moore.. 05/18/2020

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...RLX...MRX...JKL...ILN...LMK...

   LAT...LON   38538417 39098391 39108322 38758262 38668269 37958300
               37468301 36898327 36708354 36608379 36598446 36638477
               37208464 38538417