MESOSCALE DISCUSSION 2140
   NWS STORM PREDICTION CENTER NORMAN OK
   0757 PM CDT SAT AUG 28 2004
   
   AREAS AFFECTED...COASTAL ERN SC
   
   CONCERNING...HEAVY RAINFALL 
   
   VALID 290057Z - 290300Z
   
   HEAVY RAIN RATES OF 2.5 TO 3.5 INCHES/HOUR ARE POSSIBLE OVER
   PORTIONS GEORGETOWN/CHARLESTON/BERKELEY/DORCHESTER
   COUNTIES...CONTINUING AT LEAST INTO 03Z...ALONG AXIS OF NRN OUTER
   BAND OF STRONG T.S. GASTON.  BRIEFLY/LOCALLY HIGHER RATES ARE
   POSSIBLE IN HEAVIEST EMBEDDED TSTMS.  
   
   CONVECTION ASSOCIATED WITH THIS BAND HAS BEEN INTENSIFYING AND
   GROWING IN COVERAGE OVER PAST 1-2 HOURS OVER ATLANTIC WATERS.  WITH
   WIND FIELDS PREDICTED TO STRENGTHEN PER LATEST NHC
   FCSTS...CONVERGENCE SHOULD REMAIN SUFFICIENT TO MAINTAIN THIS BAND
   AS IT MOVES ASHORE BEGINNING OVER E-CENTRAL/NERN CHARLESTON COUNTY
   AND SHIFTING INLAND FROM THERE.  HEAVY RAIN HAZARD WILL BE AUGMENTED
   BECAUSE OF STRONGLY PARALLEL COMPONENT OF CONVERGENCE BAND
   ORIENTATION WITH CELL MOTION...RESULTING IN SOME ECHO TRAINING. 
   OUTER BAND TSTMS SHOULD BE VERY EFFICIENT PRECIP PRODUCERS WITH
   MAINLY WARM-CLOUD PROCESSES INVOLVED.  AIR MASS OVER REGION IS
   EXTREMELY MOIST THROUGH TROPOSPHERE BASED ON 00Z CHS RAOB WITH PW
   APCHG 2.25 INCH. 
   
   REF LATEST NHC STATEMENTS -- I.E. WMO HEADER WTNT22 KNHC -- FOR
   LATEST TRACK/INTENSITY GUIDANCE AND TROPICAL WATCHES/WARNINGS.
   
   ..EDWARDS.. 08/29/2004
   
   
   ATTN...WFO...ILM...CHS...CAE...
   
   32797976 32817991 32838016 32958032 33068037 33218035
   33308032 33388018 33507987 33467936 33417907