MESOSCALE DISCUSSION 0558
   NWS STORM PREDICTION CENTER NORMAN OK
   0439 PM CDT FRI APR 04 2008
   
   AREAS AFFECTED...SC INTO SRN NC
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 042139Z - 042245Z
   
   THE POTENTIAL FOR SEVERE STORMS CAPABLE OF DAMAGING WINDS...HAIL AND
   PERHAPS A COUPLE OF TORNADOES IS EXPECTED TO INCREASE E OF WW 165
   THIS EVENING.  CONVECTIVE TRENDS ARE BEING MONITORED FOR A WW.
   
   TRENDS IN SURFACE OBSERVATIONAL DATA AND VISIBLE SATELLITE SHOW
   WEDGE FRONT STEADILY LIFTING NWD/NWWD...EXTENDING FROM INTERSECTION
   WITH COMPOSITE OUTFLOW BOUNDARY W OF AHN ENEWD ACROSS NRN SC INTO
   CNTRL NC AS OF 21Z.  MOREOVER...SURFACE WINDS ACROSS SC HAVE BACKED
   TO MORE SLY OVER THE PAST 3 HOURS WITH A CONCENTRATED AREA OF
   PRESSURE FALLS ALONG AND S OF BAROCLINIC ZONE...SUGGESTING THAT
   LARGE-SCALE FORCING FOR ASCENT IS INCREASING ACROSS AREA.  
   
   AIR MASS S OF WEDGE FRONT HAS WARMED TO AROUND 80F AT MANY LOCATIONS
   AND WHEN COUPLED WITH DEWPOINTS IN THE MID 60S...ENVIRONMENT HAS
   BECOME MODERATELY UNSTABLE WITH MLCAPES OF 1000-1500 J/KG. 
   DEEPENING CUMULUS CONVECTION/EARLY TSTM DEVELOPMENT OVER WRN SC /N
   OF AGS/ SUGGESTS THAT ANY RESIDUAL CAPPING IS BEING ERODED WITH
   ADDITIONAL TSTMS POSSIBLE BY 05/00Z.  THIS PROCESS MAY BE HASTENED
   BY MOIST AND WARM THERMAL ADVECTIONS ALONG SWLY LLJ WHICH IS
   FORECAST TO STRENGTHEN OVER THE NEXT 3-6 HOURS.
   
   SHOULD TSTMS DEVELOP AND BECOME SUSTAINED...THE POTENTIAL WILL EXIST
   FOR SUPERCELLS GIVEN THE INTENSIFYING LOW AND DEEP-LAYER SHEAR. 
   WHILE HAIL AND LOCALLY DAMAGING WINDS WILL BE THE PRIMARY
   HAZARDS...ISOLATED TORNADOES WILL BE POSSIBLE WITH ANY MORE
   INTENSE...SURFACE-BASED SUPERCELLS.
   
   ..MEAD.. 04/04/2008
   
   
   ATTN...WFO...RAH...ILM...CHS...CAE...GSP...FFC...
   
   34368225 34938181 35408104 35388022 35137978 34597942
   33877966 33258005 32888104 32878174 33218223