Mesoscale Discussion 0663
   NWS Storm Prediction Center Norman OK
   1128 PM CDT Thu May 21 2020

   Areas affected...Southwestern KS into Northwestern OK

   Concerning...Severe Thunderstorm Watch 200...

   Valid 220428Z - 220630Z

   The severe weather threat for Severe Thunderstorm Watch 200
   continues.

   SUMMARY...Severe threat will increase along the KS/OK border over
   the next 1-3 hours.

   DISCUSSION...Slowly-expanding cold pool, due to merging supercells
   and an evolving MCS, should soon force leading squall line toward
   the KS/OK border. Northern line segment appears to be weakening and
   this is supported by latest CAMs with more significant convection
   expected to surge southeast into northwest OK in the next several
   hours. Additionally, WoFS suggests MCS should surge into the eastern
   OK Panhandle between 05-06z, then spread across northwestern OK
   during the 08-09z time frame. Hail/wind remain possible with this
   activity.

   ..Darrow.. 05/22/2020

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

   ATTN...WFO...ICT...OUN...DDC...AMA...

   LAT...LON   37250147 37869967 37689794 36819780 36389939 36470129
               37250147