Mesoscale Discussion 0555
   NWS Storm Prediction Center Norman OK
   1133 PM CDT Sat Apr 27 2024

   Areas affected...Eastern Oklahoma

   Concerning...Tornado Watch 152...

   Valid 280433Z - 280545Z

   CORRECTED FOR AREA OUTLINE

   The severe weather threat for Tornado Watch 152 continues.

   SUMMARY...Tornado potential is greatest across eastern Oklahoma.

   DISCUSSION...Influence of mid-level speed max appears to be
   affecting convection over central/southern Oklahoma. Low-level SRH
   has increased markedly across eastern OK this evening as LLJ is
   focused into this region of the southern Plains. 0-1 SRH values are
   currently around 600 m2/s2 at INX, and weak inhibition that was
   observed on 00z OUN sounding is now negligible.

   Late-afternoon convection that evolved over northwest TX/southwest
   OK has grown upscale and progressed downstream. Leading edge of
   well-defined MCS now arcs from near Payne-Okfuskee-Garvin County.
   While embedded circulations are noted along this line, especially
   the northern portions, of more concern are the discrete supercells
   that have developed ahead of the MCS. Several notable, long-lived
   supercells have evolved from south-central OK into Hughes County.
   Tornado potential appears significant with these discrete pre-MCS
   updrafts. As these updrafts are overtaken by the MCS a more complex
   MCS will ultimately evolve within the larger warm advection
   corridor. A few strong tornadoes are likely with this activity.

   ..Darrow.. 04/28/2024

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

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

   LAT...LON   35459666 36339693 36929563 36479472 35669520 34019600
               34149719 35459666