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Mesoscale Discussion 1141
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   Mesoscale Discussion 1141
   NWS Storm Prediction Center Norman OK
   0450 PM CDT Fri Jun 23 2017

   Areas affected...Kentucky...Far Western Virginia...Southwestern West
   Virginia...Far Southern Ohio

   Concerning...Tornado Watch 368...

   Valid 232150Z - 232345Z

   The severe weather threat for Tornado Watch 368 continues.

   SUMMARY...An isolated tornado threat should continue for a few more
   hours across parts of central and eastern Kentucky. The threat is
   expected to remain mostly confined to the area covered by WW 368 and
   no additional weather watch issuance is expected.

   DISCUSSION...The remnants of Cindy are currently moving into the
   Ohio Valley with the center of circulation located in the
   southwestern part of WW 368 across southern Kentucky. Ahead of the
   circulation, instability is weak but the airmass is very moist with
   surface dewpoints in the lower 70s F and precipitable water values
   in the 2.00 to 2.25 range according to the RAP. In addition, the
   WSR-88D VWPs at Charleston, WV and Tri-Cities, TN  show 0-6 km shear
   near 40 kt with 0-3 km storm relative helicity around 250 m2/s2. The
   low-level shear over south-central Kentucky appears to be even
   stronger associated with a low-level speed max at 850 mb. The
   low-level shear will continue to support a tornado threat across
   central and eastern Kentucky into early evening. The greatest
   tornado threat would be associated with the smaller more discrete
   cells that remain along the edge of the rain shields currently
   moving through central and eastern Kentucky at this time. The
   low-level speed max is forecast to move across eastern Kentucky and
   into southern West Virginia later this evening but the tornado
   threat is expected to become marginal by then.

   ..Broyles/Hart.. 06/23/2017

   ...Please see for graphic product...


   LAT...LON   38408185 38628402 37408569 36778571 36628498 36768269

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