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Mesoscale Discussion 466
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   MESOSCALE DISCUSSION 0466
   NWS STORM PREDICTION CENTER NORMAN OK
   0720 PM CDT TUE APR 26 2016

   AREAS AFFECTED...PORTIONS OF SRN IND...MUCH OF KY...SRN
   OH...WV...AND FAR WRN VA

   CONCERNING...SEVERE THUNDERSTORM WATCH 110...111...

   VALID 270020Z - 270115Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   110...111...CONTINUES.

   SUMMARY...AN ONGOING LINE OF THUNDERSTORMS ACROSS SRN IND INTO
   WRN/CNTRL KY WILL POSE MAINLY A DAMAGING WIND THREAT. SCATTERED
   CONVECTION AHEAD OF THIS LINE WILL CONTINUE TO HAVE AN ISOLATED
   LARGE HAIL AND STRONG/GUSTY WIND THREAT.

   DISCUSSION...MCS ACROSS SRN IND INTO WRN/CNTRL KY IS MOVING EWD
   AROUND 40-45 KT AS OF 00Z. BASE VELOCITY DATA FROM KLVX SHOW 50+ KT
   INBOUND VELOCITIES ASSOCIATED WITH THIS MCS AT 1500 FT AGL. SFC
   OBSERVATIONS AND SPOTTER REPORTS SUGGEST SFC WINDS ARE NEAR/ABOVE
   SEVERE LEVELS. THE ENVIRONMENT DOWNSTREAM IS WEAKLY UNSTABLE...WITH
   MLCAPE OF 500-1000 J/KG. THIS SUFFICIENT INSTABILITY COMBINED WITH
   MODESTLY ENHANCED MID-LEVEL FLOW SHOULD ALLOW STRONG TO DAMAGING
   WINDS TO REMAIN THE PRIMARY THREAT WITH THIS ONGOING MCS AS IT MOVES
   EWD ACROSS KY AND SRN IND OVER THE NEXT SEVERAL HOURS. SCATTERED
   CLUSTERS OF CONVECTION ACROSS ERN KY...SRN OH...AND WV TO THE S OF A
   COLD FRONT WILL CONTINUE TO POSE AN ISOLATED LARGE HAIL AND
   STRONG/GUSTY WIND THREAT. OVERALL...SEVERE THREAT ACROSS WW 110 AND
   111 SHOULD GRADUALLY DIMINISH OVER THE NEXT FEW HOURS AS INSTABILITY
   WEAKENS AND ONGOING CONVECTION PROBABLY BECOMES SLIGHTLY ELEVATED.

   ..GLEASON.. 04/27/2016


   ATTN...WFO...RNK...RLX...JKL...ILN...LMK...IND...PAH...

   LAT...LON   36698772 37278762 38438690 39318659 39398418 39288277
               38638028 37957977 37408117 37138398 36928510 36678523
               36698772 

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Page last modified: April 27, 2016
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