Mesoscale Discussion 0879
   NWS Storm Prediction Center Norman OK
   0940 AM CDT Wed May 29 2019

   Areas affected...Portions of central/eastern OK...northwestern
   AR...and southwestern MO

   Concerning...Severe potential...Watch likely 

   Valid 291440Z - 291545Z

   Probability of Watch Issuance...80 percent

   SUMMARY...Ongoing thunderstorms should continue to strengthen this
   morning into the afternoon with mainly a large hail and damaging
   wind threat. Watch issuance is likely soon.

   DISCUSSION...Several thunderstorm clusters ongoing at 1440Z
   along/ahead of a cold front will likely continue moving
   east-northward into a favorable environment to support severe
   hail/wind through the remainder of the morning. MLCAPE of 2000-2500
   J/kg and effective bulk shear of generally 40-50 kt will easily
   support updraft organization. Large hail will be possible with any
   supercell structures, and damaging winds may occur with the more
   clustery convection. In addition, a tornado or two will be possible,
   although the low-level flow is forecast to gradually weaken through
   much of the daytime hours. Additional storm development is likely
   through the early afternoon across eastern OK into northwestern AR
   and southwestern MO, and watch issuance is likely soon.

   ..Gleason/Thompson.. 05/29/2019

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

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

   LAT...LON   34039768 35369710 36269603 37329443 37329349 36829322
               36149351 34489517 33899611 34039768