Storm Prediction Center Mesoscale Discussion 691

   Mesoscale Discussion 0691
   NWS Storm Prediction Center Norman OK
   0323 AM CDT Wed May 08 2024

   Areas affected...Arkansas...Far Northwest Mississippi...Far
   Southwest Tennessee

   Concerning...Tornado Watch 200...

   Valid 080823Z - 081030Z

   The severe weather threat for Tornado Watch 200 continues.

   SUMMARY...A tornado and wind-damage threat may continue for a few
   more hours across WW 200. The threat may affect parts of far
   northwest Mississippi and far southwest Tennessee later this
   morning. A watch extension has been done to account for this
   possibility.

   DISCUSSION...The latest hi-resolution radar imagery from Little
   Rock, AR shows a cluster of strong thunderstorms located about 30
   statute miles to the east of Little Rock. A supercell is embedded
   toward the eastern edge of the cluster. The RAP is analyzing
   moderate instability across eastern Arkansas, with MLCAPE generally
   ranging from 2000 to 2500 J/kg. This will help to maintain
   convective development as the cluster moves eastward over the next
   few hours. In addition, the Little Rock WSR-88D VWP has 0-6 km shear
   near 45 knots, with 0-1 km storm-relative helicity just above 100
   m2/s2. This should continue to support an isolated tornado threat
   with supercells. A wind-damage threat may also accompany any cells
   that remain organized.

   ..Broyles.. 05/08/2024

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

   ATTN...WFO...MEG...JAN...LZK...SHV...

   LAT...LON   34889181 34239304 33699333 33389241 33649130 34658993
               35138935 35628917 35938947 35968998 35259116 34889181