Mesoscale Discussion 0433
   NWS Storm Prediction Center Norman OK
   0121 AM CDT Wed Apr 22 2020

   Areas affected...portions of southern OK and extreme
   north-central/northeast TX

   Concerning...Severe Thunderstorm Watch 130...

   Valid 220621Z - 220745Z

   The severe weather threat for Severe Thunderstorm Watch 130
   continues.

   SUMMARY...Strong to severe thunderstorms will continue across parts
   of south-central OK, eastward along the Red River Valley the next
   few hours. The main threat with these storms will be large hail and
   locally strong wind gusts.

   DISCUSSION...Strong to severe thunderstorms continue to track
   east/southeast at around 40 kt across south-central OK as of 06z.
   These storms are tracking through an environment characterized by
   around 500-1000 J/kg MLCAPE, and are likely elevated, or becoming
   increasingly elevated with eastward extent. Regional VWPs indicated
   strong shear favorable for continued organized convection,
   especially given the presence of steep midlevel lapse rates between
   7.5-8 C/km per 00z regional RAOBs. However, instability wanes with
   eastward extent and the 850mb south/southwesterly low level jet
   decreases toward the ArkLaTex vicinity. As such, strong to severe
   thunderstorms may continue for several more hours and a local watch
   extension and/or a new small downstream severe thunderstorm watch
   may be needed.

   ..Leitman.. 04/22/2020

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

   ATTN...WFO...SHV...TSA...FWD...OUN...

   LAT...LON   34809781 34839758 34699629 34529534 34439501 34189447
               34009440 33719442 33589452 33449468 33359514 33579634
               34059735 34379795 34629800 34809781