947
FZUS52 KCHS 122140
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 PM EDT THU MAR 12 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
AMZ300-131100-
539 PM EDT THU MAR 12 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
GUSTY WINDS CONTINUE AHEAD OF A COLD FRONT THAT WILL PUSH
OFFSHORE LATE THIS AFTERNOON. BENIGN CONDITIONS ARRIVE TO END THE
WORKWEEK AND INTO THE WEEKEND AHEAD OF THE NEXT COLD FRONT THAT
WILL IMPACT THE AREA EARLY NEXT WEEK.
AMZ330-131100-
CHARLESTON HARBOR-
539 PM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING NE
10 TO 15 KT WITH GUSTS TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT.
FRI
NE WINDS 10 KT, BECOMING S IN THE AFTERNOON.
FRI NIGHT
SW WINDS 5 KT.
SAT
N WINDS 5 KT, BECOMING E IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 KT.
SUN
E WINDS 5 TO 10 KT. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF TSTMS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE
OF TSTMS IN THE AFTERNOON.
SUN NIGHT
S WINDS 10 TO 15 KT. A CHANCE OF TSTMS. SHOWERS
LIKELY.
MON
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS WITH A
CHANCE OF TSTMS.
MON NIGHT
W WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
TUE
NW WINDS 10 TO 15 KT.
TUE NIGHT
N WINDS 5 TO 10 KT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 63 DEGREES.
AMZ350-131100-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
539 PM EDT THU MAR 12 2026
..GALE WARNING IN EFFECT UNTIL 2 AM EDT FRIDAY
TONIGHT
N WINDS 25 TO 30 KT, BECOMING NE 20 TO 25 KT WITH
GUSTS TO 30 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: N
5 FT AT 4 SECONDS AND S 5 FT AT 7 SECONDS.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING SE 5 TO
10 KT IN THE AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN
THE AFTERNOON. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS, BECOMING E 4 FT AT 8 SECONDS.
FRI NIGHT
SW WINDS 5 KT. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO
3 FT AFTER MIDNIGHT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND E 3 FT
AT 8 SECONDS, BECOMING E 3 FT AT 7 SECONDS.
SAT
N WINDS 5 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO 3 FT.
WAVE DETAIL: E 3 FT AT 8 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT
IN THE AFTERNOON. WAVE DETAIL: SE 3 FT AT 8 SECONDS, BECOMING SE
4 FT AT 7 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
TSTMS IN THE MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS
IN THE AFTERNOON.
SUN NIGHT
S WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT WITH
GUSTS TO 30 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT, BUILDING TO 5 TO
7 FT AFTER MIDNIGHT. A CHANCE OF TSTMS. SHOWERS.
MON
SW WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. SHOWERS WITH A
CHANCE OF TSTMS.
MON NIGHT
W WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TUE
NW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ352-131100-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 PM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TONIGHT
N WINDS 25 TO 30 KT, BECOMING NE 20 TO 25 KT WITH
GUSTS TO 30 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT, BUILDING TO 4 TO
6 FT AFTER MIDNIGHT. WAVE DETAIL: N 5 FT AT 4 SECONDS AND S 3 FT
AT 7 SECONDS, BECOMING NE 5 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING NE 5 TO
10 KT IN THE AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN
THE AFTERNOON. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS, BECOMING E 4 FT AT 8 SECONDS.
FRI NIGHT
SE WINDS 5 KT, BECOMING SW AFTER MIDNIGHT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS.
SAT
N WINDS 5 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO 3 FT.
WAVE DETAIL: E 3 FT AT 8 SECONDS.
SAT 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 AFTER MIDNIGHT.
SUN
E WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT
7 SECONDS. SHOWERS LIKELY WITH A SLIGHT CHANCE OF TSTMS.
SUN NIGHT
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
SW WINDS 20 TO 25 KT. SEAS 6 TO 8 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON NIGHT
W WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. A CHANCE OF
SHOWERS.
TUE
NW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ354-131100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
539 PM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING
TONIGHT
N WINDS 25 TO 30 KT, BECOMING NE 20 TO 25 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT.
WAVE DETAIL: N 5 FT AT 5 SECONDS AND S 2 FT AT 6 SECONDS,
BECOMING NE 6 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING NE 5 TO
10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 4 TO 5 FT IN
THE AFTERNOON. WAVE DETAIL: NE 6 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS, BECOMING E 4 FT AT 8 SECONDS.
FRI NIGHT
E WINDS 5 KT, BECOMING S AFTER MIDNIGHT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS.
SAT
N WINDS 5 KT, BECOMING NE IN THE AFTERNOON. SEAS 3 FT.
WAVE DETAIL: E 3 FT AT 8 SECONDS.
SAT NIGHT
E WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 8 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS. SHOWERS LIKELY. A SLIGHT CHANCE OF TSTMS IN THE
MORNING, THEN A CHANCE OF TSTMS IN THE AFTERNOON.
SUN NIGHT
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON
SW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON NIGHT
NW WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. A CHANCE OF
SHOWERS.
TUE
NW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
TUE NIGHT
N WINDS 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ374-131100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
539 PM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
..GALE WARNING IN EFFECT UNTIL 2 AM EDT FRIDAY
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS TO 40 KT, DIMINISHING
TO 20 TO 25 KT WITH GUSTS TO 30 KT LATE. SEAS 5 TO 7 FT, BUILDING
TO 6 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: N 7 FT AT 5 SECONDS AND
S 3 FT AT 6 SECONDS, BECOMING NE 7 FT AT 6 SECONDS AND E 7 FT AT
9 SECONDS. A SLIGHT CHANCE OF SHOWERS EARLY THIS EVENING.
FRI
E WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, DIMINISHING TO
10 TO 15 KT IN THE AFTERNOON. SEAS 6 TO 8 FT, SUBSIDING TO 4 TO
6 FT IN THE AFTERNOON. WAVE DETAIL: NE 7 FT AT 7 SECONDS,
BECOMING NE 6 FT AT 8 SECONDS.
FRI NIGHT
NE WINDS 5 KT, BECOMING S AFTER MIDNIGHT. SEAS 4 TO
5 FT. WAVE DETAIL: NE 5 FT AT 8 SECONDS.
SAT
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF
TSTMS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 7 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
SUN NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. SEAS 4 TO
5 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
MON
SW WINDS 20 TO 25 KT. SEAS 6 TO 8 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON NIGHT
NW WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TUE
NW WINDS 20 TO 25 KT. SEAS 5 TO 7 FT.
TUE NIGHT
N WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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