Mesoscale Discussion 0406
   NWS Storm Prediction Center Norman OK
   1247 PM CDT Sun Apr 19 2020

   Areas affected...Northern Loiusiana and far western Mississippi

   Concerning...Tornado Watch 120...

   Valid 191747Z - 191845Z

   The severe weather threat for Tornado Watch 120 continues.

   SUMMARY...Early stages of upscale convective development occurring,
   with potential for a corridor of damaging winds including embedded
   mesovortices.

   DISCUSSION...Regional radar trends indicate a band of loosely
   organized convection now showing signs of congealing, with an
   eastward component of discrete propagation. These storms are
   situated on the eastern periphery of enhanced west-southwesterly
   mid-level flow (i.e., 40 kt at 700 mb) associated with a developing
   mid-level short-wave trough. At the surface, an east-west oriented
   warm front remains draped across the region, with deep-layer shear
   vectors oriented parallel to the boundary.

   At the present time, expectations are for the aforementioned
   convective trends to continue, leading to an eventual eastward
   propagating MCS. Should this occur, there exists a high potential
   for damaging winds, including embedded mesovortex circulations.

   ..Karstens.. 04/19/2020

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

   ATTN...WFO...JAN...LIX...LCH...SHV...

   LAT...LON   31749415 32329353 32549182 32349113 30999122 30989291
               31279418 31749415