Mesoscale Discussion 1360
   NWS Storm Prediction Center Norman OK
   0819 PM CDT Thu Jul 30 2020

   Areas affected...Southeast OK...Northeast TX...Southwest AR

   Concerning...Severe Thunderstorm Watch 405...

   Valid 310119Z - 310215Z

   The severe weather threat for Severe Thunderstorm Watch 405
   continues.

   SUMMARY...Severe threat is increasing across southeast OK into
   southwest AR/northeast TX.

   DISCUSSION...Earlier convection that evolved along a pre-frontal
   confluence zone over south-central OK has grown upscale into an MCS
   that is propagating across southeast OK. An apparent MCV is evolving
   southwest of MLC and this is partly responsive to the surging line
   segment that is moving east-southeast in excess of 40kt over
   Atoka/Bryan County area. Earlier this line segment produced an 81
   mph wind gust at the Sulphur mesonet site. There is some concern
   this activity will propagate east of the watch into portions of
   southwest AR/northeast TX before it weakens. Some consideration is
   being given to a new severe thunderstorm watch downstream.

   ..Darrow.. 07/31/2020

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

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

   LAT...LON   33769630 34569578 35189565 35339403 34639359 33439502
               33769630