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Mesoscale Discussion 1042
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   Mesoscale Discussion 1042
   NWS Storm Prediction Center Norman OK
   0301 PM CDT Thu Jun 15 2017

   Areas affected...portions of western Pennsylvania...northern West

   Concerning...Severe potential...Watch unlikely 

   Valid 152001Z - 152200Z

   Probability of Watch Issuance...5 percent

   SUMMARY...Thunderstorms will pose a risk for isolated damaging gusts
   through the remainder of the afternoon, however a watch is not

   DISCUSSION...Thunderstorms over western Pennsylvania have loosely
   organized into short line segments this afternoon, aided in part by
   weak ascent associated with a convectively-modulated mid-level
   impulse moving east across Ohio. A 45-kt wind gust was reported with
   the line of storms at KHLG earlier this afternoon.  Generally weak
   surface-based buoyancy has developed in advance of the line, with
   effective shear values generally below 25 kts.  Nevertheless, the
   line segments will be capable of additional isolated strong/damaging
   gusts for a few more hours as storms move northeast. The overall
   severe risk should remain too isolated to warrant a severe
   thunderstorm watch.

   ..Bunting/Hart.. 06/15/2017

   ...Please see for graphic product...


   LAT...LON   40628006 41717966 41927926 41847875 41677850 41437840
               41137848 40607872 40217914 39937941 39707977 39408011
               39228044 39368063 39848050 40628006 

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