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Mesoscale Discussion 1408
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   MESOSCALE DISCUSSION 1408
   NWS STORM PREDICTION CENTER NORMAN OK
   0435 AM CDT TUE JUL 14 2015

   AREAS AFFECTED...CNTRL KY...SWRN IND

   CONCERNING...SEVERE THUNDERSTORM WATCH 420...

   VALID 140935Z - 141100Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 420
   CONTINUES.

   SUMMARY...ISOLATED DAMAGING WIND THREAT PRIMARILY EXISTS WITHIN A
   SWD-SINKING CLUSTER ACROSS CNTRL KY. CONVECTION CONTINUES TO FAIL TO
   GREATLY INTENSIFY UPSHEAR ACROSS SWRN IND AND THIS PORTION OF THE WW
   APPEARS SAFE TO CANCEL EARLY.

   DISCUSSION...CLUSTER OVER N-CNTRL KY PRODUCED A MEASURED GUST OF 32
   KT AT KLOU AT 0850Z AND HAS SINCE ACCELERATED ITS SWD MOVEMENT TO
   AROUND 45 KT. THE GREATEST DAMAGING WIND RISK SHOULD LIE ALONG THE
   APEX OF THIS CLUSTER ON WWD AS IT OVERRIDES REMNANT CONVECTIVE
   OUTFLOW FROM A CLUSTER NOW NEAR THE KY/VA/TN BORDER. WHERE SURFACE
   TEMPERATURES HAVE COOLED INTO THE MIDDLE TO UPPER 60S...STABILIZING
   EFFECTS OF THE LEAD CLUSTER SHOULD LIMIT POTENTIAL FOR STRONG WIND
   GUSTS WITH ERN EXTENT. 

   FARTHER UPSHEAR...WHILE CONVECTIVE DEVELOPMENT HAS PERSISTED OVER
   THE WABASH VALLEY...THIS ACTIVITY HAS FAILED TO GREATLY INTENSIFY
   AND APPEARS UNLIKELY TO GROW UPSCALE PRIOR TO WW EXPIRATION.

   ..GRAMS.. 07/14/2015


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

   LAT...LON   37818564 37808507 37948471 37848445 37478428 37098429
               36758440 36778477 37248557 37718619 38308734 38678778
               38848780 38928765 38818725 38448672 37818564 

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Page last modified: July 14, 2015
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