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Mesoscale Discussion 1081
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   Mesoscale Discussion 1081
   NWS Storm Prediction Center Norman OK
   0448 AM CDT Sun Jun 18 2017

   Areas affected...Far southern IL...parts of southern IN...and
   western and northwestern KY

   Concerning...Severe Thunderstorm Watch 350...

   Valid 180948Z - 181145Z

   The severe weather threat for Severe Thunderstorm Watch 350
   continues.

   SUMMARY...Greatest severe-weather threat (primarily with damaging
   winds) will continue to spread across southwest into south-central
   IN and parts of western and northwestern KY early this morning.  The
   overall severe-weather threat should continue to diminish across far
   southern IL.

   DISCUSSION...Trends in lightning data and fast storm movement
   (east-southeast at 40-45 kt) with storms that have moved into
   southwest IN suggest a continued severe-weather threat across this
   portion of WW 350 through 10-12Z.  If forward motion is maintained
   through 1030-11Z, portions of northwest KY (Breckinridge and Meade
   Counties) to Harrison County IN may need to be added to this watch. 
   The ongoing storms in southwest IN are moving through the axis of
   strongest instability, while most-unstable CAPE weakens with
   eastward extent into central KY.  This observation and potential for
   further boundary layer stabilization early this morning could
   eventually limit the severe-weather threat east of WW 350.

   Meanwhile, the decrease in storm movement and diminishing lightning
   trends across southern IL suggests the overall severe-weather threat
   in this portion of WW 350 should continue to wane.

   ..Peters.. 06/18/2017

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...LMK...IND...PAH...ILX...

   LAT...LON   36918800 36898904 37068925 37308939 37528919 37498863
               38148795 38668756 39248747 39118547 38438566 37838612
               37628629 37268691 36918800 

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Page last modified: June 18, 2017
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