968
FZUS52 KCHS 180523
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
123 AM EDT THU SEP 18 2025
SOUTH SANTEE RIVER SC TO SAVANNAH GA OUT 20 NM AND SAVANNAH GA TO
ALTAMAHA SOUND GA OUT 60 NM, INCLUDING CHARLESTON HARBOR AND
GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-181830-
123 AM EDT THU SEP 18 2025
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
WEAK HIGH PRESSURE WILL EXTEND ACROSS THE REGION THIS WEEK.
STRONGER HIGH PRESSURE WILL BUILD INTO THE REGION OVER THE
WEEKEND AND EARLY NEXT WEEK, WHILE A COASTAL TROUGH DEVELOPS
OFFSHORE.
AMZ330-181830-
CHARLESTON HARBOR-
123 AM EDT THU SEP 18 2025
REST OF TONIGHT
SW WINDS 5 KT.
THU
W WINDS 5 KT, BECOMING S 10 TO 15 KT WITH GUSTS TO 20 KT
IN THE AFTERNOON.
THU NIGHT
SE WINDS 5 TO 10 KT, DIMINISHING TO 5 KT AFTER
MIDNIGHT.
FRI
NE WINDS 5 KT, BECOMING E IN THE AFTERNOON.
FRI NIGHT
E WINDS 5 TO 10 KT.
SAT
NE WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT WITH GUSTS TO
20 KT IN THE AFTERNOON.
SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT.
SUN
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN NIGHT
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
MON
NE WINDS 10 TO 15 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
MON NIGHT
NE WINDS 10 TO 15 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 77 DEGREES.
AMZ350-181830-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
123 AM EDT THU SEP 18 2025
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS 1 TO 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
THU
W WINDS 5 KT, BECOMING S 5 TO 10 KT IN THE AFTERNOON. SEAS
1 TO 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3
SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT, DIMINISHING TO 5 KT AFTER
MIDNIGHT. SEAS 1 TO 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND SW
1 FOOT AT 3 SECONDS.
FRI
NE WINDS 5 KT, BECOMING E IN THE AFTERNOON. SEAS 2 FT.
WAVE DETAIL: E 2 FT AT 9 SECONDS AND S 1 FOOT AT 4 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
SAT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: E 3 FT AT 8 SECONDS, BECOMING E 4 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SAT NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A SLIGHT
CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
SUN
NE WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN NIGHT
NE WINDS 15 TO 20 KT. SEAS 5 TO 6 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
MON
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ352-181830-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
123 AM EDT THU SEP 18 2025
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS 1 TO 2 FT. WAVE
DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU
W WINDS 5 KT, BECOMING S 5 TO 10 KT IN THE AFTERNOON. SEAS
1 TO 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3
SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 TO 2 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND S 1 FOOT AT 2 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: E 2 FT AT
8 SECONDS AND S 1 FOOT AT 4 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: SE 2 FT
AT 8 SECONDS.
SAT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: E 3 FT AT 8 SECONDS, BECOMING E 4 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SAT NIGHT
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
SUN
NE WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
MON
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ354-181830-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
123 AM EDT THU SEP 18 2025
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 1 TO 2 FT. WAVE
DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU
W WINDS 5 KT, BECOMING E 5 TO 10 KT IN THE AFTERNOON. SEAS
1 TO 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3
SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 TO 2 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND SE 1 FOOT AT 3 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: E 2 FT AT
8 SECONDS AND SE 1 FOOT AT 4 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS.
SAT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: E 3 FT AT 8 SECONDS, BECOMING E 4 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SAT NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN
NE WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SUN NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
MON
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS
AND TSTMS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ374-181830-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
123 AM EDT THU SEP 18 2025
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 2 FT AT 8 SECONDS.
THU
W WINDS 5 KT, BECOMING NE IN THE AFTERNOON. SEAS 2 FT.
WAVE DETAIL: E 2 FT AT 8 SECONDS.
THU NIGHT
E WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 8 SECONDS AND SE 1 FOOT AT 4 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS. A SLIGHT CHANCE OF
TSTMS AFTER MIDNIGHT.
SAT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT IN THE
AFTERNOON. WAVE DETAIL: E 4 FT AT 8 SECONDS. A SLIGHT CHANCE OF
TSTMS. A SLIGHT CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE
OF SHOWERS IN THE AFTERNOON.
SAT NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
SUN
NE WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS.
SUN NIGHT
NE WINDS 15 TO 20 KT. SEAS 5 TO 6 FT. A CHANCE OF
SHOWERS AND TSTMS.
MON
NE WINDS 15 KT. SEAS 5 FT. A CHANCE OF SHOWERS AND TSTMS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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