MESOSCALE DISCUSSION 0900
   NWS STORM PREDICTION CENTER NORMAN OK
   0358 PM CDT MON MAY 23 2011
   
   AREAS AFFECTED...NRN AR...SE MO...SRN IL...WRN KY...WRN TN
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 340...343...
   
   VALID 232058Z - 232230Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   340...343...CONTINUES.
   
   A SEVERE THREAT WILL LIKELY CONTINUE AS A LINE MOVES EWD INTO WRN KY
   AND WRN TN LATE THIS AFTERNOON. FOR THIS REASON...A WW EXTENSION
   WILL BE LIKELY ACROSS THE REGION OVER THE NEXT FEW HOURS.
   
   A NEARLY CONTINUOUS LINE OF STRONG TO SEVERE THUNDERSTORMS IS
   ONGOING FROM SE MO SWD ACROSS NE AR ALONG THE WRN EDGE OF MODERATE
   TO STRONG INSTABILITY. MESOANALYSIS SHOWS MLCAPE VALUES RANGING FROM
   1500 TO 25000 J/KG WHICH WILL FUEL THE MCS OVER THE NEXT FEW HOURS.
   THE LINE IS ALSO BEING SUPPORTED BY LARGE-SCALE ASCENT AHEAD OF A
   SHORTWAVE TROUGH EVIDENT ON WATER VAPOR IMAGERY. MESOANALYSIS ALSO
   SHOWS A WELL-DEFINED JET NEAR 700 MB WHICH IS LIKELY HELPING THE
   LINE TO ORGANIZE A WIND DAMAGE THREAT. AS THE LINE MOVES EWD INTO
   WRN TN AND WRN KY...THE WIND DAMAGE THREAT SHOULD CONTINUE. HAIL
   WILL ALSO BE POSSIBLE WITH THE MORE INTENSE ELEMENTS WITHIN THE
   LINE.
   
   ..BROYLES.. 05/23/2011
   
   
   ATTN...WFO...LMK...IND...PAH...ILX...MEG...LSX...LZK...SGF...
   TSA...
   
   LAT...LON   34839021 34909109 35019111 34979126 34869133 35049135
               35089153 34999160 35089205 34979226 34889238 34989252
               35129245 35049273 35089296 35329325 35419345 35419368
               35769362 35759349 36129344 36049228 36469203 36539110
               37499119 37699111 37779067 37999051 38139007 38238949
               38188917 38478908 38458872 38628865 38508766 38428773
               38538714 38258713 38168678 37878700 37938752 37848783
               37718808 37498806 37358842 37048843 37248891 36578886
               36138920 35838899 35578909 35208923 34998924 35039022
               34839021