MESOSCALE DISCUSSION 0427
   NWS STORM PREDICTION CENTER NORMAN OK
   0641 PM CDT SAT MAR 15 2008
   
   AREAS AFFECTED...CENTRAL AND ERN GA/SC/SRN NC
   
   CONCERNING...TORNADO WATCH 120...
   
   VALID 152341Z - 160045Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 120 CONTINUES.
   
   PARAMETERS REMAIN VERY FAVORABLE FOR LONG-LIVED SUPERCELLS
   ESPECIALLY ACROSS SRN AND ERN PARTS OF WW 120...WITH THESE STORMS
   PRODUCING TORNADOES...VERY LARGE HAIL AND DAMAGING WINDS.
   
   UPPER TN VALLEY SHORT WAVE TROUGH WILL PROGRESS EWD WITH STRONG
   ASCENT WITHIN EXIT REGIONS OF ACCOMPANYING 90 KT 500 MB/110 KT 300
   MB JETS MAINTAINING TSTM DEVELOPMENT ACROSS MAINLY THE SRN AND ERN
   PARTS OF WW 120.  EARLY EVENING SURFACE ANALYSIS SHOWED PRIMARY
   SYNOPTIC LOW ATTENDANT TO UPPER TN VALLEY WAVE LOCATED OVER WRN
   NC...WITH AT LEAST TWO MESOLOWS...1) OVER EAST CENTRAL GA/SWRN SC
   AND 2) OVER SRN NC.  THESE MESOLOWS WERE LOCATED ALONG A SURFACE
   BOUNDARY/WARM FRONT THAT EXTENDED FROM CENTRAL AL/GA INTO CENTRAL SC
   TO NERN NC.  SURFACE PRESSURE FALLS ALONG THE SC/NC COAST ARE
   MAINTAINING BACKED SURFACE WINDS WHICH COMBINED WITH INCREASING WIND
   FIELDS VEERING WITH HEIGHT WILL CONTINUE TO FAVOR STRONG ROTATING
   SUPERCELLS THIS EVENING.
   
   ..PETERS.. 03/15/2008