Mesoscale Discussion 1665
   NWS Storm Prediction Center Norman OK
   0629 PM CDT Tue Sep 01 2020

   Areas affected...Eastern Texas Panhandle and western Oklahoma

   Concerning...Severe Thunderstorm Watch 482...

   Valid 012329Z - 020100Z

   The severe weather threat for Severe Thunderstorm Watch 482
   continues.

   SUMMARY...Severe potential is expected to increase somewhat over the
   next few hours as storms, including a few supercells, mature. Large
   hail and damaging winds will be likely with the strongest storms.
   Upscale growth is also possible later this evening with an increased
   potential for damaging winds.

   DISCUSSION...Several clusters of strong to severe storms are ongoing
   this evening across WW482 in the eastern Texas Panhandle and far
   western Oklahoma. An uptick in intensity and coverage has been noted
   over the last 30 to 45 minutes. Increased lift from the approaching
   upper trough and low-level jet will likely continue to support storm
   intensity and additional development over the next few hours. Storm
   mode remains mixed, but a supercell over Armstrong and Donley
   Counties has show some moderate rotation and a prominent hail
   signature. Deep layer shear greater than 40 kt and steep mid-level
   lapse rates are favorable for large hail production with any
   relatively discrete updrafts that can become established. Additional
   storm development and some upscale growth may also support an
   increased threat for damaging winds later this evening. Cooler air
   from previous convection and heavy rainfall over central Oklahoma
   should serve as the effective eastern edge for significant severe
   weather across WW482.

   ..Lyons/Guyer.. 09/01/2020

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

   ATTN...WFO...OUN...LUB...AMA...

   LAT...LON   35400223 36770088 36980002 36969885 36119890 35189955
               34240023 33990066 34340211 35400223