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Mesoscale Discussion 728
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   Mesoscale Discussion 0728
   NWS Storm Prediction Center Norman OK
   0743 PM CDT Wed Jun 13 2018

   Areas affected...Eastern Ohio...western and central
   Pennsylvania...and the north panhandle of West Virginia

   Concerning...Severe Thunderstorm Watch 176...

   Valid 140043Z - 140145Z

   The severe weather threat for Severe Thunderstorm Watch 176

   SUMMARY...Severe threat continues through the evening. Short
   duration tornado threat for the next hour or two in central and
   north central Pennsylvania.

   DISCUSSION...Several supercells have formed in Severe Thunderstorm
   Watch 176. Recently one of these supercells in Bradford County, PA
   has developed a strong low-level couplet and a correlation
   coefficient minimum. This cluster of storms with embedded supercells
   have deviated to the right of the mean wind. This has allowed this
   storm to ingest better low-level streamwise vorticity. While this
   was likely an isolated feature, any other storms with deviant motion
   should be watched closely for tornadic potential over the next hour.

   ..Bentley.. 06/14/2018

   ...Please see for graphic product...


   LAT...LON   39727745 39727747 39728083 39868123 39958123 40138123
               40168123 40168123 40568091 41508000 41617983 41637940
               41637940 41637848 41597687 41547622 40957620 40797630
               40167691 39727745 39727745 

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