Mesoscale Discussion 0190
   NWS Storm Prediction Center Norman OK
   0419 AM CDT Wed Mar 13 2019

   Areas affected...North-Central/Central TX

   Concerning...Severe Thunderstorm Watch 21...

   Valid 130919Z - 131045Z

   The severe weather threat for Severe Thunderstorm Watch 21
   continues.

   SUMMARY...Threat for strong wind gusts and brief QLCS tornadoes
   continues across north-central and central TX.

   DISCUSSION...Well-organized convective line continues to progress
   quickly eastward across north-central/central TX. The overall
   character of the line appears to have improved over the past hour or
   so, evidenced primarily by the sharpening of the reflectivity
   gradient along the leading edge and the presence of several LEWPs
   within the line across north-central TX. Moisture advection ahead of
   the line has resulted in a more favorable thermodynamic environment.
   Additionally, southeasterly winds have gradually increased in
   response to the continued tightening of the surface pressure
   gradient. Overall vertical shear remains very strong. Recent KFWS
   VAD sampled over 65 kt of 0-3 km bulk shear and a 0-1 km SRH over
   650 m2/s2. Consequently, the overall environment remains supportive
   of strong wind gusts and brief QLCS tornadoes.

   Farther south across central TX, the line has recently intensified
   as an embedded supercell moved northeastward from
   Menard/Mason/McCulloch counties into San Saba. This embedded storm
   may promote a forward surge within the convective line across
   central TX. Airmass ahead of the line in this area is characterized
   by dewpoints in the upper 60s, minimal convective inhibition, and
   MLCAPE approaching 1000 J/kg. As such, this area is supportive of a
   continue severe threat, with the resulting risk slightly higher than
   areas farther north due to the limited convective inhibition.

   ..Mosier.. 03/13/2019

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

   ATTN...WFO...FWD...EWX...SJT...

   LAT...LON   33459756 33699729 33609676 33099648 31169697 30649861
               31229852 32139794 33459756