Storm Prediction Center Mesoscale Discussion 1953

   Mesoscale Discussion 1953
   NWS Storm Prediction Center Norman OK
   0809 PM CDT Sun Aug 18 2024

   Areas affected...Northeast Louisiana into portions of
   west-central/southwest Mississippi

   Concerning...Severe Thunderstorm Watch 637...

   Valid 190109Z - 190315Z

   The severe weather threat for Severe Thunderstorm Watch 637
   continues.

   SUMMARY...Damaging winds are possible with a line of convection
   moving south-southeastward into portions of central Mississippi and
   northeast Louisiana.

   DISCUSSION...An line of convection has organized along outflow from
   earlier storms in central/southeast Arkansas. The 00Z observed
   sounding from Jackson, MS, showed 2000+ MLCAPE with minimal MLCIN
   and 34 kts effective shear. Though some diurnal cooling will occur,
   the overall organization of the cold pool should allow strong to
   severe storms to continue for another 2-3 hours. Damaging winds will
   likely be the main threat given the transition to a linear mode. It
   is possible this line of storms could approach the southern edge of
   WW 637 before 03Z. Depending on convective trends, this may warrant
   an extension in area and/or time of WW 637.

   ..Wendt.. 08/19/2024

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

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

   LAT...LON   33239231 33359188 33599098 33699045 32548989 31948994
               31779061 31809145 31859195 31979204 32139206 33239231