Mesoscale Discussion 0152
   NWS Storm Prediction Center Norman OK
   0420 AM CST Wed Mar 04 2020

   Areas affected...central into northeast Texas...western Louisiana

   Concerning...Severe Thunderstorm Watch 40...

   Valid 041020Z - 041215Z

   The severe weather threat for Severe Thunderstorm Watch 40
   continues.

   SUMMARY...An increase in storm coverage is expected through early
   morning, with hail or locally strong wind gusts possible.

   DISCUSSION...Total PWAT continues to increase, with value of 1.50"
   up to I-20, and 1.75" around Houston. This is contributing to around
   1000-1500 J/kg MUCAPE from San Antonio into central LA. Meanwhile,
   strong southwest winds aloft remain over the area ahead of the upper
   trough. A small line of storms continues to approach I-35 near SAT,
   with southern end limited by capping aloft. Recently, a storm has
   formed near LFK, suggesting the moist boundary layer has breached
   the capping layer. The most likely region for storms to form will be
   north of a SAT to LFK line, into the cooler surface air, where lift
   from warm advection is maximized. Favorable deep-layer shear will
   support hail in some of the storms, and strong wind gusts will be
   possible with any bowing storms.

   ..Jewell/Thompson.. 03/04/2020

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

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

   LAT...LON   30939465 30689552 30369648 29869753 29549816 29639860
               29939895 30329897 30999874 31749771 32389683 32779546
               32809396 32799266 32439204 31539195 31269221 31109292
               30939465