MESOSCALE DISCUSSION 0764
   NWS STORM PREDICTION CENTER NORMAN OK
   0739 PM CDT TUE MAY 21 2013
   
   AREAS AFFECTED...CNTRL - NERN LA / CNTRL MS
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 220039Z - 220245Z
   
   PROBABILITY OF WATCH ISSUANCE...80 PERCENT
   
   SUMMARY...A LOCALLY DAMAGING WIND THREAT WILL PROBABLY MOVE INTO
   NERN LA AND CNTRL MS BY THE MID-LATE EVENING.  ADDITIONAL
   STRONG-SEVERE POTENTIAL WILL INCREASE FARTHER SW OVER CNTRL LA.
   
   DISCUSSION...RADAR MOSAIC SHOWS AN EXTENSIVE SQUALL LINE SEGMENTED
   INTO SEVERAL QLCS INTERCONNECTED BY A MODIFYING OUTFLOW BOUNDARY
   LOCATED FROM THE SRN EXTENSION OF THE NRN MS QLCS WWD TO THE SRN
   AR/NWRN LA QLCS.  ALTHOUGH SOME SLIGHT SURFACE COOLING WILL OCCUR
   PRIOR TO THE APPROACH OF THE QLCS FROM THE NW...THE 00Z/22 JAN RAOB
   EXHIBITED A MOIST AND MODERATELY UNSTABLE BOUNDARY LAYER WITH DEEP
   LAYER SHEAR /25-30 KT/ SUPPORTIVE OF A LINEAR MCS.  RECENT KSHV VWP
   DATA SHOW A 40-45 KT REAR INFLOW JET ASSOCIATED WITH THE QLCS AND A
   35 KT GUST WAS OBSERVED AT KSHV.  AS A RESULT...A CONTINUATION OF A
   35-50 KT WIND GUST THREAT CAPABLE OF POCKETS OF WIND DAMAGE WILL
   LIKELY MOVE INTO THE DISCUSSION AREA OVER THE NEXT SEVERAL HOURS.
   
   ..SMITH/CORFIDI.. 05/22/2013
   
   
   ATTN...WFO...BMX...JAN...LIX...LCH...SHV...
   
   LAT...LON   33548896 33398845 33018819 32558835 30389326 30629355
               31029356 31399341 32509186 33548896