MESOSCALE DISCUSSION 0782
   NWS STORM PREDICTION CENTER NORMAN OK
   0325 PM CDT SAT MAY 09 2009
   
   AREAS AFFECTED...SRN AR...FAR NRN LA...FAR NERN TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 282...
   
   VALID 092025Z - 092130Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 282
   CONTINUES.
   
   AS OF 2020Z...AN MCS STRETCHED FROM CNTRL TO SWRN AR AND WWD ALONG
   THE RED RIVER IN SERN OK/NERN TX. RADAR TRENDS INDICATE THAT THE
   REFLECTIVITY GRADIENT HAS BROADENED SUBSTANTIALLY WITH DIMINISHED
   VIL VALUES IN ASSOCIATION WITH LEADING LINE SEGMENT. ALTHOUGH THIS
   SUGGESTS OVERALL SEVERE POTENTIAL MAY BE SUBSIDING...SURFACE
   TEMPERATURES ACROSS FAR S-CNTRL/SERN AR INTO NRN LA HAVE WARMED INTO
   THE MIDDLE 80S WITH DEW POINTS HOLDING IN THE LOWER 70S. THIS HAS
   CONTRIBUTED TO A MODERATELY UNSTABLE AIR MASS WITH MLCAPES AROUND
   2000 J/KG. AS EMBEDDED MCV SHIFTS EWD ALONG COMPOSITE STATIONARY
   FRONT/OUTFLOW BOUNDARY...REINTENSIFICATION OF THE MCS APPEARS
   POSSIBLE WITH ATTENDANT DAMAGING WINDS/SEVERE HAIL THREATS. EVEN IF
   THIS DOES NOT OCCUR...HEAVY RAINFALL WILL REMAIN A CONCERN GIVEN THE
   W-E BOUNDARY ORIENTATION AND CONVECTIVE REDEVELOPMENT OCCURRING
   ALONG WRN FLANK OF MCS ON THE NRN PERIPHERY OF STOUT EML.
   
   ..GRAMS.. 05/09/2009
   
   
   ATTN...WFO...MEG...JAN...LZK...SHV...TSA...FWD...
   
   LAT...LON   34219198 34429133 34329073 33809063 33149098 32829131
               32549208 32429312 32569421 32959496 33409518 33869532
               34009517 33879404 34309285 34219198