Mesoscale Discussion 1091
   NWS Storm Prediction Center Norman OK
   0935 PM CDT Thu Jun 15 2023

   Areas affected...central Oklahoma

   Concerning...Severe Thunderstorm Watch 312...

   Valid 160235Z - 160330Z

   The severe weather threat for Severe Thunderstorm Watch 312
   continues.

   SUMMARY...The significant severe weather threat will continue over
   the next few hours across central Oklahoma with large hail and
   damaging winds being the primary threats.

   DISCUSSION...The convective evolution over Oklahoma has become messy
   over the last couple of hours, as increasing low-level warm
   advection has resulted in the initiation of several storms ahead of
   the primary convective line.  In addition, the supercell cluster
   that moved across southwestern Oklahoma earlier in the day has
   stabilized the low levels, as indicated by dewpoints in the low 60s
   across much of southwestern Oklahoma.  As a result, the tornado
   threat has decreased across the state, but sufficient instability
   and shear remain for organized storms and severe weather this
   evening.

   The severe hail threat will be greatest for discrete storms ahead of
   the line in central Oklahoma, where an axis of mid-to-upper 60s
   dewpoints remain.  The convective line farther west will primarily
   pose a severe wind threat.  As these storms move eastward and the
   boundary layer stabilizes, they will encounter a less favorable
   environment for surface-based parcels.  A narrow northwest-southeast
   axis of higher moisture/instability exists from central to southeast
   Oklahoma, which will offer the best corridor for continued severe
   wind potential.

   ..Jirak/Grams.. 06/16/2023

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

   ATTN...WFO...TSA...OUN...

   LAT...LON   34939903 35399831 35869790 36419765 36609724 36559685
               36189649 35859636 35209643 34469601 34129631 34149704
               34239812 34939903