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Mesoscale Discussion 1233
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   MESOSCALE DISCUSSION 1233
   NWS STORM PREDICTION CENTER NORMAN OK
   1011 PM CDT MON JUN 30 2014

   AREAS AFFECTED...PORTIONS OF NRN/CNTRL INDIANA AND E-CNTRL IL

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 010311Z - 010515Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...THE AREA DOWNSTREAM OF WW 380 IS BEING MONITORED FOR
   POSSIBLE SVR TSTM WATCH ISSUANCE.

   DISCUSSION...A MATURE SQUALL LINE CROSSING THE CHICAGO AREA AND
   EXTENDING SWWD TO W-CNTRL IL WILL CONTINUE SPREADING EWD/SEWD. THE
   PRIMARY SEWD SURGE OF THE LINE MAY EXTEND DOWNSTREAM OF WW 380 IN
   THE NEXT FEW HOURS GIVEN MODERATE/STRONG INSTABILITY AND 35-50 KT OF
   EFFECTIVE BULK SHEAR. THIS MAY WARRANT NEW WW ISSUANCE
   DOWNSTREAM...SHOULD THE CONVECTIVE COLD POOL BE MAINTAINED.
   NOCTURNAL STABILIZATION COULD BE DELETERIOUS TO SUSTAINING A
   DOWNSTREAM SVR RISK...HOWEVER...AND CONVECTIVE TRENDS WILL CONTINUE
   TO BE MONITORED.

   ..COHEN/DIAL.. 07/01/2014


   ATTN...WFO...IWX...IND...LOT...ILX...

   LAT...LON   41598672 41778595 40848549 39768636 39498869 40138892
               40558707 41598672 

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Page last modified: July 01, 2014
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