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Mesoscale Discussion 253
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   MESOSCALE DISCUSSION 0253
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 PM CDT THU APR 09 2015

   AREAS AFFECTED...SERN INDIANA...NRN KY...SWRN OH

   CONCERNING...SEVERE THUNDERSTORM WATCH 40...

   VALID 092049Z - 092145Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 40
   CONTINUES.

   SUMMARY...SEVERE THREAT APPEARS TO BE INCREASING FROM SERN INDIANA
   INTO SWRN OH.

   DISCUSSION...LATEST RADAR/SATELLITE IMAGERY SUGGEST A WEAK
   VORT...POSSIBLY CONVECTIVE RELATED...IS PROGRESSING ENEWD ALONG THE
   OH RIVER TOWARD WRN PORTIONS OF WW40.  LATEST DATA SUGGEST THIS
   FEATURE IS LOCATED NEAR EVV AND APPEARS TO BE INFLUENCING RECENT
   INTENSIFICATION OF CONVECTION JUST DOWNSTREAM ACROSS SERN INDIANA. 
   IF THIS TREND CONTINUES WW40 MAY NEED TO BE EXPANDED WEST AND
   NORTH...OR A NEW WATCH ISSUED...TO ACCOUNT FOR THIS THREAT.  LARGE
   HAIL/DAMAGING WINDS ARE THE PRIMARY THREATS.

   ..DARROW.. 04/09/2015


   ATTN...WFO...ILN...LMK...IND...

   LAT...LON   38378633 40058447 39908328 39028331 37938500 38378633 

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Page last modified: April 09, 2015
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