Mesoscale Discussion 0482
   NWS Storm Prediction Center Norman OK
   0256 PM CDT Tue Apr 30 2019

   Areas affected...northwest Texas into southwest/central Oklahoma

   Concerning...Tornado Watch 111...

   Valid 301956Z - 302200Z

   The severe weather threat for Tornado Watch 111 continues.

   SUMMARY...Recent trends suggest possible storm initiation across
   southwest Oklahoma into northwest Texas, with a corridor of tornado
   and damaging wind threat along the front.

   DISCUSSION...Latest surface obs, including the Oklahoma Mesonet,
   show a low developing near the stationary front centered over Caddo
   county. In addition, surface observations indicate gusty southeast
   winds of 25-30 mph blowing toward the low, suggesting favorable mass
   response with pressure falls.

   Substantial low-level moisture exists along this boundary, extending
   from northwest TX into central OK. In addition, radar trends show
   showers and a few storms beginning to form from Wilbarger county TX
   toward Caddo/Grady counties as of 20Z.

   The TLX VWP shows over 300 m2/s2 of 0-3 km SRH, while latest
   objective analysis also shows substantial surface vorticity in place
   near the front.

   Therefore, any storms that develop may proceed northeast nearly
   parallel to the front, and if they do, could pose a tornado threat,
   as well as damaging winds if they grow upscale into an MCS.

   ..Jewell.. 04/30/2019

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

   ATTN...WFO...OUN...SJT...

   LAT...LON   35419721 35319721 35239738 35029772 34739815 34409851
               33969873 33529902 33319930 33369959 33609961 33959940
               34459916 34959885 35259821 35519780 35659746 35629728
               35419721