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Mesoscale Discussion 321
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   Mesoscale Discussion 0321
   NWS Storm Prediction Center Norman OK
   0610 PM CDT Wed May 02 2018

   Areas affected...Western/Central OK...Northwest TX

   Concerning...Tornado Watch 62...

   Valid 022310Z - 030045Z

   The severe weather threat for Tornado Watch 62 continues.

   SUMMARY...Threat for all severe hazards, including very large hail
   and tornadoes, persists across western/central OK and adjacent
   northwest TX.

   DISCUSSION...Numerous discrete supercells developed during the past
   several hours across portions of western OK and adjacent northwest
   TX. Spatial extent between these supercells has become increasingly
   small over the past hour and current trends suggest upscale growth
   into an organized MCS is probable. Cells along the far southern
   flank (over northwest TX) have already undergone a transition to a
   more linear mode, with that general trend anticipated farther north
   into west-central OK. Once that occurs, primary severe threat will
   transition to damaging wind gusts, although tornadoes embedded
   within the line are still possible. Until then, ongoing discrete
   supercells are expected to persist within an airmass characterized
   by strong instability and veered low-level wind profiles. Recent
   KTLX VAD sampled 0-1 km SRH over 200 m2/s2. These supercells are
   capable of all severe hazards, include very large hail and

   ..Mosier.. 05/02/2018

   ...Please see for graphic product...


   LAT...LON   36159881 36889852 37019829 36879755 36229712 35279707
               34469758 33539866 33530017 34719944 36159881 

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