685
FZUS52 KCHS 120452
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
1252 AM 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
AMZ300-121900-
1252 AM EDT THU MAR 12 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
A COLD FRONT WILL PUSH OFFSHORE TODAY FOLLOWED BY A RETURN TO
HIGH PRESSURE. ANOTHER COLD FRONT IS EXPECTED TO IMPACT THE
REGION EARLY NEXT WEEK.
AMZ330-121900-
CHARLESTON HARBOR-
1252 AM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
REST OF TONIGHT
SW WINDS 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
THU
SW WINDS 20 KT, BECOMING NW IN THE AFTERNOON. WAVES 2 TO
3 FT. A SLIGHT CHANCE OF TSTMS. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS IN THE AFTERNOON.
THU NIGHT
N WINDS 20 TO 25 KT, BECOMING NE 10 TO 15 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
FRI
NE WINDS 10 KT, BECOMING E IN THE AFTERNOON.
FRI NIGHT
S WINDS 5 KT, BECOMING SW AFTER MIDNIGHT.
SAT
VARIABLE WINDS 5 KT.
SAT NIGHT
E WINDS 5 KT.
SUN
SE WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.
SUN NIGHT
S WINDS 10 TO 15 KT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
MON
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON NIGHT
NW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 63 DEGREES.
AMZ350-121900-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
1252 AM EDT THU MAR 12 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
REST OF TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND SE 3 FT AT
9 SECONDS.
THU
SW WINDS 20 TO 25 KT, BECOMING W 25 TO 30 KT WITH GUSTS TO
35 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT AT 7
SECONDS AND SE 4 FT AT 8 SECONDS. SHOWERS WITH A SLIGHT CHANCE OF
TSTMS IN THE AFTERNOON.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS TO 35 KT, BECOMING NE
20 TO 25 KT WITH GUSTS TO 30 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.
WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 5 FT AT 8 SECONDS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, DIMINISHING TO
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 S
1 FOOT AT 7 SECONDS, BECOMING E 4 FT AT 7 SECONDS.
FRI NIGHT
SE WINDS 5 KT, BECOMING SW AFTER MIDNIGHT. SEAS 2 TO
3 FT. WAVE DETAIL: 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. A SLIGHT CHANCE
OF SHOWERS AND TSTMS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
SUN NIGHT
S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. 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.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ352-121900-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
1252 AM EDT THU MAR 12 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH FRIDAY MORNING...
REST OF TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING W 20 TO
25 KT WITH GUSTS TO 30 KT IN THE AFTERNOON. SEAS 4 TO 5 FT. WAVE
DETAIL: S 5 FT AT 7 SECONDS. A SLIGHT CHANCE OF TSTMS. A CHANCE
OF SHOWERS IN THE MORNING, THEN SHOWERS IN THE AFTERNOON.
THU NIGHT
N WINDS 25 TO 30 KT, BECOMING NE 20 TO 25 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND NW
4 FT AT 4 SECONDS.
FRI
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, DIMINISHING TO
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,
BECOMING E 4 FT AT 8 SECONDS.
FRI NIGHT
E 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. A SLIGHT CHANCE
OF SHOWERS AND TSTMS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS.
SUN NIGHT
S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
MON
SW WINDS 20 TO 25 KT. SEAS 5 TO 7 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
MON NIGHT
NW WINDS 25 TO 30 KT. SEAS 5 TO 7 FT. A CHANCE OF
SHOWERS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ354-121900-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
1252 AM EDT THU MAR 12 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH FRIDAY MORNING...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS.
THU
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT, BECOMING W IN
THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS
AND SE 3 FT AT 9 SECONDS. A SLIGHT CHANCE OF TSTMS. A CHANCE OF
SHOWERS IN THE MORNING, THEN SHOWERS IN THE AFTERNOON.
THU NIGHT
NE WINDS 25 TO 30 KT. SEAS 4 TO 6 FT, BUILDING TO
5 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND NW
4 FT AT 4 SECONDS, BECOMING NE 6 FT AT 6 SECONDS.
FRI
E WINDS 20 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 5 FT AT 6 SECONDS, BECOMING E 4 FT AT
7 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS.
SAT
NE WINDS 5 TO 10 KT. SEAS 3 FT. WAVE DETAIL: E 3 FT AT
8 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY WITH
A SLIGHT CHANCE OF TSTMS.
SUN NIGHT
S WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. 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.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ374-121900-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
1252 AM EDT THU MAR 12 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON
...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH LATE
TONIGHT...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND E 3 FT AT
9 SECONDS.
THU
SW WINDS 15 TO 20 KT, BECOMING W 20 TO 25 KT WITH GUSTS TO
30 KT IN THE AFTERNOON. SEAS 4 TO 5 FT, BUILDING TO 4 TO 6 FT IN
THE AFTERNOON. WAVE DETAIL: S 5 FT AT 6 SECONDS AND SE 3 FT AT 9
SECONDS, BECOMING SW 5 FT AT 6 SECONDS AND SE 3 FT AT 9 SECONDS.
SHOWERS WITH A SLIGHT CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS TO 40 KT. SEAS 5 TO
7 FT, BUILDING TO 6 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: E 7 FT AT
8 SECONDS AND NW 6 FT AT 5 SECONDS, BECOMING NE 7 FT AT 6
SECONDS.
FRI
E WINDS 20 TO 25 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 7 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 SE AFTER MIDNIGHT. SEAS 4 TO
5 FT. WAVE DETAIL: NE 5 FT AT 8 SECONDS.
SAT
NE WINDS 5 TO 10 KT. 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. A CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
SUN
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. SHOWERS LIKELY WITH
A CHANCE OF TSTMS.
SUN NIGHT
S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
MON
SW WINDS 20 TO 25 KT. SEAS 5 TO 7 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.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page