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Mesoscale Discussion 1713
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MD 1713 graphic

   MESOSCALE DISCUSSION 1713
   NWS STORM PREDICTION CENTER NORMAN OK
   0751 PM CDT WED SEP 10 2014

   AREAS AFFECTED...NRN OH INTO CENTRAL INDIANA

   CONCERNING...TORNADO WATCH 501...

   VALID 110051Z - 110145Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 501 CONTINUES.

   SUMMARY...MARGINAL DAMAGING WIND/TORNADO RISK MAY CONTINUE FOR A FEW
   HOURS THROUGH LATE EVENING. WATCH 501 WILL BE ALLOWED TO EXPIRE AT
   01Z IN OH...BUT MAY NEED LOCAL EXTENSION IN INDIANA.

   DISCUSSION...CONVECTION PERSISTS IN A MOIST/WEAKLY UNSTABLE
   ENVIRONMENT WITH SUBSTANTIAL LOW-LEVEL SHEAR...PER 00Z SOUNDINGS. 
   THE LOSS OF DAYTIME HEATING WILL RESULT IN A GRADUAL REDUCTION IN
   ALREADY MARGINAL BUOYANCY...THOUGH WIND PROFILES WILL REMAIN
   FAVORABLE FOR STORM-SCALE ROTATION.  THUS...SOME RISK FOR ISOLATED
   DAMAGING GUSTS AND PERHAPS A TORNADO WILL CONTINUE...THOUGH THE
   OVERALL SEVERE RISK APPEARS TO BE MARGINAL FOR THE CONTINUATION OF A
   TORNADO WATCH IN OH.  THE SOMEWHAT STRONGER BUOYANCY EXISTS FROM SRN
   IL INTO INDIANA...WHERE A LOCAL EXTENSION OF THE WATCH MAY BE
   NEEDED.

   ..THOMPSON/HART.. 09/11/2014


   ATTN...WFO...CLE...ILN...IWX...IND...

   LAT...LON   41388130 40818165 40598187 40338251 40188315 39088643
               39018740 39358750 40258565 40698463 40988344 41218302
               41648236 41718165 41618144 41388130 

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Page last modified: September 11, 2014
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