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Mesoscale Discussion 1036
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   Mesoscale Discussion 1036
   NWS Storm Prediction Center Norman OK
   0756 PM CDT Wed Jun 14 2017

   Areas affected...Portions of west/northwest TX into southwestern OK

   Concerning...Severe Thunderstorm Watch 331...

   Valid 150056Z - 150230Z

   The severe weather threat for Severe Thunderstorm Watch 331

   SUMMARY...An isolated large hail and damaging wind threat continues
   across WW 331 this evening.

   DISCUSSION...Isolated thunderstorms initiated across west TX this
   afternoon along a dryline, and quickly became severe with strong
   instability and sufficient deep-layer shear present across this
   region. Subsequent evolution of thunderstorms over the past several
   hours has tended towards several splitting supercells and small
   bowing clusters. One such cluster moved across the Midland/Odessa TX
   area, producing measured 64 mph winds and 1.5-2 inch diameter hail.
   00Z sounding from Midland TX shows strong MLCAPE around 2250 J/kg,
   which will easily support ongoing thunderstorms. Although a weakness
   in the mid-level flow is noted around 700 mb, strengthening winds
   from 600 mb to the tropopause is supporting around 45 kt of 0-6 km
   shear. Ongoing multicell clusters and isolated supercells will
   continue to pose a large hail and damaging wind threat for at least
   the next several hours. By late evening, increasing convective
   inhibition owing to the loss of daytime heating should result in the
   weakening of ongoing convection. The severe threat across northern
   portions of WW 331 remains conditional, and recent visible satellite
   imagery indicates a general lessening of the cumulus field with
   northeastward extent (into southwestern OK). Still, a left-split
   supercell over Kent County TX as of 0055Z may pose an isolated
   severe threat as it moves northeastward.

   ..Gleason.. 06/15/2017

   ...Please see for graphic product...


   LAT...LON   30150333 31660334 35409992 35429863 34169863 30000252

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