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Mesoscale Discussion 361
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   MESOSCALE DISCUSSION 0361
   NWS STORM PREDICTION CENTER NORMAN OK
   0531 PM CDT SAT APR 18 2015

   AREAS AFFECTED...KS...SCNTRL NEBRASKA

   CONCERNING...SEVERE THUNDERSTORM WATCH 74...

   VALID 182231Z - 182330Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 74
   CONTINUES.

   SUMMARY...SEVERE THREAT MAY GRADUALLY EXPAND EAST OF WW74.  NEW WW
   MAY BE REQUIRED TO ACCOUNT FOR THIS EVOLUTION.

   DISCUSSION...IT APPEARS AN MCS IS SLOWLY EVOLVING ACROSS
   CNTRL/SCNTRL KS THIS EVENING.  SCT CONVECTION THAT WAS DIURNALLY
   DRIVEN CONTINUES TO EXPAND AND MERGE INTO A LARGER CLUSTER OF
   STORMS.  WITH TIME CONVECTIVE OUTFLOW...AIDED BY LARGE SCALE
   TROUGH...SHOULD ENCOURAGE THIS MCS TO SHIFT EAST OF WW74.  LATEST
   WDSSII DATA SUGGESTS LARGE HAIL ACCOMPANIES THE STRONGEST ACTIVITY
   AND THIS APPEARS TO BE THE MAIN THREAT.

   ..DARROW/CORFIDI.. 04/18/2015


   ATTN...WFO...TOP...ICT...OUN...GID...LBF...DDC...GLD...

   LAT...LON   36949983 41050034 41049801 36949766 36949983 

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Page last modified: April 18, 2015
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