631
FZUS52 KCHS 172139
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 PM EDT FRI APR 17 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-181100-
539 PM EDT FRI APR 17 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
ATLANTIC HIGH PRESSURE WILL PREVAIL THROUGH SATURDAY. A STRONG
COLD FRONT WILL PUSH ACROSS THE WATERS SUNDAY BRINGING A PERIOD
OF HAZARDOUS WINDS AND SEAS. IMPROVING CONDITIONS ARRIVE SUNDAY
NIGHT INTO MONDAY AS HIGH PRESSURE QUICKLY RETURNS.
AMZ340-181100-
CHARLESTON HARBOR-
539 PM EDT FRI APR 17 2026
TONIGHT
SW WINDS 5 TO 10 KT.
SAT
S WINDS 5 TO 10 KT.
SAT NIGHT
S WINDS 10 KT.
SUN
SW WINDS 10 KT, BECOMING W WITH GUSTS TO 20 KT IN THE
AFTERNOON. A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. A SLIGHT
CHANCE OF TSTMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 10 TO 15 KT.
MON NIGHT
SE WINDS 5 KT, BECOMING NW AFTER MIDNIGHT.
TUE
NE WINDS 5 TO 10 KT.
TUE NIGHT
S WINDS 5 KT.
WED
SW WINDS 5 TO 10 KT.
WED NIGHT
SW WINDS 5 TO 10 KT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
AMZ360-181100-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
539 PM EDT FRI APR 17 2026
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
SAT
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
SUN
SW WINDS 15 KT, BECOMING W IN THE AFTERNOON. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A
SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS 3 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: E 4 FT
AT 8 SECONDS AND NW 3 FT AT 5 SECONDS, BECOMING NE 5 FT AT
5 SECONDS AND SW 1 FOOT AT 5 SECONDS. A SLIGHT CHANCE OF TSTMS IN
THE EVENING. A CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT AT 7 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WED
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-181100-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 PM EDT FRI APR 17 2026
TONIGHT
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT
9 SECONDS AND S 1 FOOT AT 4 SECONDS.
SAT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
W WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: S 3 FT AT
5 SECONDS AND SE 3 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
N WINDS 15 TO 20 KT, BECOMING NE 20 TO 25 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT.
WAVE DETAIL: SE 4 FT AT 8 SECONDS AND NW 3 FT AT 3 SECONDS,
BECOMING NE 5 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT AT 6 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WED
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WED NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
AMZ364-181100-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
539 PM EDT FRI APR 17 2026
TONIGHT
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT
9 SECONDS.
SAT
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND S 2 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON.
SUN NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS 3 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND NW 3 FT AT 3 SECONDS, BECOMING NE 5 FT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT AT 6 SECONDS.
MON NIGHT
E WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT AFTER MIDNIGHT.
TUE
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WED
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WED NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
AMZ380-181100-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
539 PM EDT FRI APR 17 2026
TONIGHT
SW WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: SW 2 FT AT
5 SECONDS AND SE 2 FT AT 8 SECONDS.
SAT
SW WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: S 2 FT AT
4 SECONDS AND E 2 FT AT 8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS.
SUN
SW WINDS 15 TO 20 KT, BECOMING W IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. SEAS 4 TO
6 FT, BUILDING TO 6 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: NW 5 FT
AT 5 SECONDS AND E 5 FT AT 8 SECONDS, BECOMING NE 8 FT AT
6 SECONDS AND SW 1 FOOT AT 5 SECONDS. A SLIGHT CHANCE OF TSTMS IN
THE EVENING. A CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT. GUSTS TO 35 KT IN THE MORNING. SEAS
7 TO 9 FT, SUBSIDING TO 6 TO 8 FT IN THE AFTERNOON. WAVE DETAIL:
NE 9 FT AT 8 SECONDS, BECOMING NE 8 FT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
E WINDS 10 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 FT.
WED
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-181100-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
539 PM EDT FRI APR 17 2026
TONIGHT
S WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT AT
9 SECONDS AND SW 1 FOOT AT 4 SECONDS.
SAT
SW WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT AT
8 SECONDS AND SW 2 FT AT 4 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 3 FT AT 8 SECONDS. A
SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
N WINDS 20 TO 25 KT, BECOMING NE 25 TO 30 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT.
WAVE DETAIL: SE 5 FT AT 8 SECONDS AND NW 4 FT AT 4 SECONDS,
BECOMING NE 7 FT AT 6 SECONDS. A SLIGHT CHANCE OF TSTMS IN THE
EVENING. A CHANCE OF SHOWERS.
MON
NE WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 7 TO 9 FT. WAVE DETAIL: NE 9 FT AT 7 SECONDS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT, SUBSIDING TO
4 TO 5 FT AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. SEAS 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WED
S WINDS 5 TO 10 KT. SEAS 3 FT.
WED NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-181100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
539 PM EDT FRI APR 17 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT AT
9 SECONDS AND S 1 FOOT AT 4 SECONDS.
SAT
SW WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT AT
8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN NIGHT
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. SEAS 4 TO
5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND NW 3 FT AT 4 SECONDS, BECOMING N 7 FT AT
6 SECONDS. A CHANCE OF SHOWERS.
MON
NE WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 7 TO 9 FT. WAVE DETAIL: NE 8 FT AT 7 SECONDS.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT, SUBSIDING TO
4 TO 6 FT AFTER MIDNIGHT.
TUE
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WED
SE WINDS 5 TO 10 KT. SEAS 3 FT.
WED NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT.
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