Mesoscale Discussion 0500
   NWS Storm Prediction Center Norman OK
   0156 AM CDT Wed Apr 29 2020

   Areas affected...East-central Texas...Louisiana

   Concerning...Severe Thunderstorm Watch 154...155...

   Valid 290656Z - 290900Z

   The severe weather threat for Severe Thunderstorm Watch 154, 155
   continues.

   SUMMARY...A severe threat is likely to continue for several more
   hours as a line of storms moves southeastward across WW 154 and WW
   155. New weather watch issuance may be needed to the southeast of
   the current watches.

   DISCUSSION...A well-developed squall line is evident on radar from
   north-central Texas arching east-northeastward across northwest
   Arkansas into northwest Mississippi. The line of storms is located
   on the northern edge of a moist airmass. Surface dewpoints are
   highest in east-central Texas where the RAP is showing a moderately
   unstable airmass. MLCAPE values are estimated to be in the 3000 to
   4000 J/kg range across much of east-central Texas. For this reason,
   the potential for wind damage and large hail will be greatest there
   over the next few hours. Wind damage and hail will also be possible
   eastward across northern Louisiana where low-level flow is stronger.
   The severe threat should move southeastward to the edges of WW 154
   and WW 155 by 10Z. If the intensity of the line can be sustained as
   it approaches the edge of the weather watches, then a new weather
   watch could need to be issued across parts of southeast Texas and
   central Louisiana late tonight.

   ..Broyles/Guyer.. 04/29/2020

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

   ATTN...WFO...JAN...LCH...SHV...HGX...FWD...EWX...

   LAT...LON   31979722 31989777 31579804 31099799 30369748 29899623
               30339453 30749234 31239157 32349100 33029154 32719267
               32159432 31899628 31979722