Mesoscale Discussion 1660
   NWS Storm Prediction Center Norman OK
   0837 PM CDT Mon Aug 31 2020

   Areas affected...Northwest TX to Southeast KS

   Concerning...Severe Thunderstorm Watch 480...

   Valid 010137Z - 010300Z

   The severe weather threat for Severe Thunderstorm Watch 480
   continues.

   SUMMARY...Isolated large hail and damaging wind threat continues.

   DISCUSSION...Southern High Plains short-wave trough continues its
   slow eastward progression into western OK/northwest TX. Surface
   front that settled into this region has moved little over the last
   few hours and there does not appear to be an adequate cold pool to
   significantly shunt this boundary appreciably south over the next
   few hours. Weak low-level warm advection will continue along the
   frontal corridor which should provide some assistance for renewed
   convection. Radar data confirms this scenario with new updrafts
   evolving southwest-northwest of the OKC metro. Hail remains possible
   with the younger-mature updrafts, then gusty winds will be the
   primary threat. Otherwise, very heavy rainfall remains likely with
   these storms.

   ..Darrow.. 09/01/2020

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

   ATTN...WFO...SGF...TSA...ICT...OUN...LUB...

   LAT...LON   33740001 37439609 37419428 33739826 33740001