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Mesoscale Discussion 1889
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   MESOSCALE DISCUSSION 1889
   NWS STORM PREDICTION CENTER NORMAN OK
   0904 AM CDT WED SEP 05 2012
   
   AREAS AFFECTED...SRN IL AND IND...WRN KY...SERN MO
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 051404Z - 051530Z
   
   PROBABILITY OF WATCH ISSUANCE...80 PERCENT
   
   SUMMARY...STORMS MAY INCREASE OVER THE NEXT SEVERAL HOURS WITH
   DAMAGING WINDS POSSIBLE FROM SRN IL/IND SWD INTO WRN KY AND TN.
   
   DISCUSSION...A LINE OF STORMS ASSOCIATED WITH A MESO-HIGH FROM AN
   EARLIER MCS IS EXPECTED TO PERSIST WITH DAMAGING WIND POTENTIAL
   SPREADING SEWD INTO THE OH VALLEY.
   
   SURFACE ANALYSIS SHOWS SUBSTANTIAL PRESSURE RISES BEHIND THIS
   LINE...AND AREA OF HEATING WILL OCCUR AHEAD OF IT...STEEPENING LAPSE
   RATES AND DESTABILIZING THE AIR MASS. ALSO...AS THIS SYSTEM
   PROGRESSES SEWD...MEAN WINDS VEER AND BECOME LESS PARALLEL TO THE
   LINE...WHICH MAY HELP TO ENHANCE FORWARD PROPAGATION.
   
   ..JEWELL/CORFIDI.. 09/05/2012
   
   
   ATTN...WFO...LMK...OHX...IND...PAH...ILX...LSX...
   
   LAT...LON   39668766 39378670 38358607 37428608 36858671 36638793
               36608939 37058981 37699004 38269018 38689013 39198889
               39668766 
   
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Page last modified: September 05, 2012
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