472
FZUS52 KCHS 170634
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
234 AM EDT TUE MAR 17 2026
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
AMZ300-172000-
234 AM EDT TUE MAR 17 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
HIGH PRESSURE WILL PREVAIL THROUGH THE WEEKEND.
AMZ330-172000-
CHARLESTON HARBOR-
234 AM EDT TUE MAR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS
MORNING...
REST OF TONIGHT
NW WINDS 15 KT WITH GUSTS TO 25 KT.
TUE
NW WINDS 10 TO 15 KT.
TUE NIGHT
NW WINDS 5 TO 10 KT.
WED
NE WINDS 5 TO 10 KT.
WED NIGHT
N WINDS 5 KT.
THU
NE WINDS 5 KT.
THU NIGHT
VARIABLE WINDS 5 KT.
FRI
N WINDS 5 KT.
FRI NIGHT
S WINDS 5 KT.
SAT
SW WINDS 5 TO 10 KT.
SAT NIGHT
SW WINDS 10 KT.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 61 DEGREES.
AMZ350-172000-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
234 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS
6 TO 8 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND NW 5 FT AT
5 SECONDS.
TUE
NW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, DIMINISHING TO
10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT IN
THE AFTERNOON. WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 4 FT AT
8 SECONDS, BECOMING NW 3 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS.
TUE NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 8 SECONDS AND NW 2 FT AT 4 SECONDS.
WED
NE WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 4 TO 5 FT.
WAVE DETAIL: NE 3 FT AT 4 SECONDS AND SE 3 FT AT 9 SECONDS.
WED NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
THU
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 9 SECONDS AND NE 2 FT AT 5 SECONDS.
THU NIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
3 TO 4 FT.
FRI
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 4 FT.
AMZ352-172000-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
234 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS
5 TO 7 FT. WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 4 FT AT
8 SECONDS.
TUE
NW WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 3 FT AT
8 SECONDS, BECOMING N 3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
TUE NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 3 FT
AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
WED NIGHT
NE WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND
NE 2 FT AT 5 SECONDS.
THU
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND
SE 3 FT AT 9 SECONDS.
THU NIGHT
E WINDS 5 KT, BECOMING N AFTER MIDNIGHT. SEAS 3 TO
4 FT.
FRI
N WINDS 5 TO 10 KT. SEAS 3 FT.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
AMZ354-172000-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
234 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS
4 TO 6 FT. WAVE DETAIL: NW 5 FT AT 4 SECONDS AND SE 3 FT AT
8 SECONDS.
TUE
NW WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: NW 4 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS, BECOMING N 3 FT AT 4 SECONDS AND E 1 FOOT AT
8 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND E 2 FT AT 9 SECONDS.
WED
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT
IN THE AFTERNOON. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS, BECOMING SE 3 FT AT 9 SECONDS AND NE 2 FT AT
4 SECONDS.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 9 SECONDS AND NE 2 FT AT 4 SECONDS.
THU
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT
AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
THU NIGHT
E WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
3 TO 4 FT.
FRI
N WINDS 5 TO 10 KT. SEAS 3 FT.
FRI NIGHT
S WINDS 10 KT. SEAS 3 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
AMZ374-172000-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
234 AM EDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY
REST OF TONIGHT
NW WINDS 25 KT WITH GUSTS TO 30 KT. SEAS 6 TO
8 FT. WAVE DETAIL: NW 7 FT AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE
NW WINDS 20 TO 25 KT WITH GUSTS TO 30 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS TO 20 KT IN THE AFTERNOON. SEAS 5 TO 7 FT,
SUBSIDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: NW 6 FT AT
6 SECONDS AND SE 2 FT AT 8 SECONDS, BECOMING NW 5 FT AT 5 SECONDS
AND SE 2 FT AT 8 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND SE 3 FT AT 8 SECONDS.
WED
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT
IN THE AFTERNOON. WAVE DETAIL: N 3 FT AT 4 SECONDS AND E 3 FT AT
9 SECONDS, BECOMING SE 4 FT AT 9 SECONDS AND N 3 FT AT 4 SECONDS.
WED NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND NE 3 FT AT 5 SECONDS.
THU
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND
SE 4 FT AT 9 SECONDS.
THU NIGHT
NE WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
FRI
N WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
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