470 
FPUS03 KCHS 171816
AFDCHS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
215 PM EDT FRI APR 17 1998

UPPR RIDGE OVER FLA PROGGED TO AMPLIFY ALLOWING HEIGHT RISES TO OCCUR 
ACROSS THE FA THROUGH TOMORROW. COLD FRONT NOW APPROACHING FROM THE 
WEST WILL DRAPE OVER RIDGE AND SHUD BECOME STATIONARY N OF FA. EXPECT 
MID LEVEL CAP TO INCREASE IN STRENGTH HERE TOMORROW AS RIDGE AMPLIFIES. 
WILL GO WITH SLGT CHC POPS BASED ON THIS. SEVERE THREAT ON SAT WILL 
REMAIN WELL WEST OF THE FA THROUGH THE LOWER MISS VALLEY WHERE AGEO DIV 
IN RIGHT ENTRANCE REGION OF UPPR JET WILL INTERACT WITH MOISTURE FLUX 
AND INSTABILITY. BEST CHANCE FOR SEVERE WX AND HIGHER POPS HERE WILL 
OCCUR STARTING EARLY SUNDAY AND CONTINUING INTO SUNDAY NIGHT AS SYSTEM 
MOVES EAST. WILL KEEP TEMPS FOR LOWS TONIGHT NEAR VALUES IN CURRENT ZFP.
ETA FCST RH FIELDS SUGGEST A GOOD DEAL MORE SUN FOR SAT. WITH RIDGE 
BUILDING THIS SEEMS LIKELY. WILL GO A CAT OR TWO ABOVE FWC TEMPS SAT 
BASED ON THIS. FOR CWF...WILL OPT TO KEEP SCA UP WITH WINDS OVER 
COASTAL WATERS FCST TO REMAIN NEAR 20 KT THROUGH SAT AND THEN INCREASE 
TO NEAR 25 KT FOR SUNDAY.

SOUTH COAST  /CHS-NBC/

.TONIGHT...MOSTLY CLOUDY. A SLIGHT CHANCE OF A SHOWER OR THUNDERSTORM. 
LOW IN THE MIDDLE 60S. SOUTH WIND 10 MPH. CHANCE OF RAIN 20 PERCENT.
.SATURDAY...PARTLY CLOUDY. A SLIGHT CHANCE OF A SHOWER OR THUNDERSTORM. 
HIGH FROM THE MIDDLE 70S COAST TO THE LOWER 80S INLAND. SOUTH WIND 10 
TO 15 MPH. CHANCE OF RAIN 20 PERCENT.
.SATURDAY NIGHT...PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF A SHOWER OR 
THUNDERSTORM. LOW IN THE MIDDLE 60S. 
.SUNDAY...MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF SHOWERS AND 
THUNDERSTORMS. HIGH FROM THE MIDDLE 70S COAST TO AROUND 80 INLAND.

CCF

CHS APRT   65/84/64/80  2235
CHS CITY   67/78/66/77
SAV APRT   64/85/62/82  2235

SIMENSKY