Mesoscale Discussion 1194
   NWS Storm Prediction Center Norman OK
   0923 PM CDT Sat Jul 11 2020

   Areas affected...Northern/Central Oklahoma...Northwest Arkansas

   Concerning...Severe Thunderstorm Watch 358...360...

   Valid 120223Z - 120430Z

   The severe weather threat for Severe Thunderstorm Watch 358, 360
   continues.

   SUMMARY...Severe thunderstorms will spread southeast across northern
   Oklahoma and northwest Arkansas this evening. Hail and wind are
   expected with this activity.

   DISCUSSION...Convection has expanded in areal coverage along a
   corridor from the eastern OK Panhandle into extreme northwest AR
   over the last few hours. This activity has evolved within an area of
   extreme instability along the southwestern flank of a mid-level
   short-wave trough that is digging across eastern KS/MO. In the wake
   of the short wave, surface boundary has advanced to near the KS/OK
   border, and is moving south at 20kt. Within the hour, this boundary
   should interact with the extensive convection across the northern
   portions of OK which may encourage this activity to continue to grow
   upscale and begin to sag south. 00z sounding from OUN was very
   unstable with ample deep-layer northwesterly flow to support
   organized southeast movement. Wind and hail remain likely with these
   storms.

   ..Darrow.. 07/12/2020

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

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

   LAT...LON   36900007 36759681 36609594 35919438 35219472 35559827
               36089983 36900007