Mesoscale Discussion 0710
   NWS Storm Prediction Center Norman OK
   0550 PM CDT Mon May 20 2019

   Areas affected...Southeast Texas Panhandle...Eastern Texas South
   Plains...Portions of Permian Basin

   Concerning...Tornado Watch 197...

   Valid 202250Z - 210045Z

   The severe weather threat for Tornado Watch 197 continues.

   SUMMARY...The tornado threat will continue within WW 197. Given the
   strength of the low-level shear expected, tornadoes will be possible
   with all storm modes. However, significant tornadoes will remain
   possible with any storm that can remain discrete.

   DISCUSSION...Several discrete/semi-discrete supercell thunderstorms
   are ongoing across WW 197. So far, tornadic activity has been
   limited by the number of storms ongoing in relative close proximity.
   Nevertheless, very strong deep-layer shear (60-70 kts) and strong
   low-level veering ahead of these storms, particularly in northwest
   Texas and into southwest Oklahoma, will continue to support strong
   low-level rotation. As the low-level jet continues to increase this
   evening, the tornado threat should also increase. The threat for
   strong tornadoes will generally be modulated by storm mode. Any
   storm that can remain discrete will continue to pose a threat for a
   significant tornado. However, given the very strong low-level shear,
   tornadoes will remain possible within linear segments.

   ..Wendt.. 05/20/2019

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

   ATTN...WFO...OUN...SJT...LUB...AMA...MAF...

   LAT...LON   34630113 35500060 35590001 34619991 33759995 33110014
               32410063 31570148 31310245 31880254 34630113