911
FZUS52 KCHS 170939
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
538 AM 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
AMZ300-172300-
538 AM 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.
AMZ340-172300-
CHARLESTON HARBOR-
538 AM EDT FRI APR 17 2026
TODAY
SW WINDS 5 TO 10 KT.
TONIGHT
SW WINDS 5 TO 10 KT.
SAT
SW WINDS 5 KT, BECOMING S IN THE AFTERNOON.
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 15 KT WITH GUSTS TO 20 KT. A SLIGHT CHANCE
OF SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT.
MON NIGHT
SE WINDS 5 TO 10 KT.
TUE
NE WINDS 5 TO 10 KT.
TUE NIGHT
S WINDS 5 TO 10 KT.
AMZ360-172300-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
538 AM EDT FRI APR 17 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: S 3 FT AT
5 SECONDS AND E 2 FT AT 9 SECONDS.
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, INCREASING TO 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 5 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: NW 3 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS, BECOMING N 5 FT AT
5 SECONDS AND SW 1 FOOT AT 5 SECONDS. A SLIGHT CHANCE OF TSTMS IN
THE EVENING. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-172300-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
538 AM EDT FRI APR 17 2026
TODAY
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.
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 4 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
SW WINDS 10 TO 15 KT, BECOMING W 15 TO 20 KT IN THE
AFTERNOON. 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 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS 3 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: NW 3 FT
AT 4 SECONDS AND SE 3 FT AT 8 SECONDS, BECOMING N 5 FT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 FT.
AMZ364-172300-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
538 AM EDT FRI APR 17 2026
TODAY
SW WINDS 5 TO 10 KT, BECOMING S LATE. SEAS 2 TO 3 FT.
WAVE DETAIL: SE 3 FT AT 9 SECONDS AND S 2 FT AT 4 SECONDS.
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: NW 3 FT
AT 3 SECONDS AND SE 3 FT AT 8 SECONDS, BECOMING NE 5 FT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
AMZ380-172300-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
538 AM EDT FRI APR 17 2026
TODAY
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 E 2 FT AT 9 SECONDS.
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 SE
2 FT AT 8 SECONDS.
SUN
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 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, INCREASING TO 25 TO 30 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT, BUILDING TO 6 TO 8 FT AFTER MIDNIGHT.
WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS,
BECOMING N 8 FT AT 8 SECONDS AND SW 5 FT AT 5 SECONDS. A SLIGHT
CHANCE OF TSTMS IN THE EVENING. A CHANCE OF SHOWERS.
MON
NE WINDS 25 TO 30 KT. SEAS 6 TO 8 FT.
MON NIGHT
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-172300-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
538 AM EDT FRI APR 17 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, DIMINISHING TO
5 TO 10 KT LATE. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT
5 SECONDS AND E 3 FT AT 9 SECONDS.
TONIGHT
S WINDS 10 KT. SEAS 3 FT. WAVE DETAIL: E 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 5 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 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 20 TO 25 KT, INCREASING TO 25 TO 30 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT, BUILDING TO 6 TO 8 FT AFTER MIDNIGHT.
WAVE DETAIL: NW 5 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS,
BECOMING NE 8 FT AT 8 SECONDS AND N 5 FT AT 5 SECONDS. A SLIGHT
CHANCE OF TSTMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
TUE NIGHT
SE WINDS 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-172300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
538 AM EDT FRI APR 17 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, DIMINISHING TO
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
4 SECONDS AND SE 3 FT AT 9 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT AT
9 SECONDS.
SAT
S 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 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. 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: NW 4 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS,
BECOMING NE 7 FT AT 8 SECONDS AND N 5 FT AT 4 SECONDS. A SLIGHT
CHANCE OF TSTMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS.
MON
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
TUE NIGHT
E WINDS 10 KT. SEAS 4 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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