531
FZUS52 KCHS 171900
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
300 PM EDT SAT OCT 17 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-180900-
300 PM EDT SAT OCT 17 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
HIGH PRESSURE WILL BUILD INTO THE AREA THROUGH THE WEEKEND AND
LINGER INTO NEXT WEEK AS A STRONG NOR'EASTER MEANDERS OFF THE
MID- ATLANTIC COAST. THIS WILL KEEP HAZARDOUS WINDS AND SEAS IN
PLACE INTO THE MIDDLE OF NEXT WEEK.
AMZ340-180900-
CHARLESTON HARBOR-
300 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 30 KT. WAVES 1 TO
2 FT.
SUN
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
SUN NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
MON
N WINDS 10 TO 15 KT WITH GUSTS TO 20 KT.
MON NIGHT
N WINDS 10 TO 15 KT.
TUE
N WINDS 10 TO 15 KT.
TUE NIGHT
N WINDS 10 KT.
WED
N WINDS 10 KT.
WED NIGHT
N WINDS 5 TO 10 KT.
THU
N WINDS 10 KT.
THU NIGHT
N WINDS 5 KT.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 77 DEGREES.
AMZ360-180900-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY MORNING
TONIGHT
N 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: N 7 FT
AT 6 SECONDS, BECOMING NE 8 FT AT 7 SECONDS.
SUN
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. WAVE DETAIL: NE 9 FT
AT 8 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. WAVE DETAIL:
NE 9 FT AT 8 SECONDS.
MON
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS 7 TO 9 FT.
WAVE DETAIL: NE 8 FT AT 13 SECONDS.
MON NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 6 TO
8 FT, SUBSIDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: NE 8 FT
AT 14 SECONDS, BECOMING NE 7 FT AT 14 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 7 FT,
SUBSIDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: NE 7 FT AT
13 SECONDS, BECOMING NE 6 FT AT 13 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
WED
N WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
WED NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU
N WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
THU NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
AMZ362-180900-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY MORNING
TONIGHT
N 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: NE 7 FT
AT 6 SECONDS, BECOMING NE 8 FT AT 7 SECONDS.
SUN
NE WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. WAVE DETAIL: NE 8 FT
AT 7 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. WAVE DETAIL:
NE 9 FT AT 8 SECONDS.
MON
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 6 TO 8 FT. WAVE DETAIL: NE 8 FT AT 9 SECONDS.
MON NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO
7 FT. WAVE DETAIL: NE 7 FT AT 13 SECONDS.
TUE
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 5 TO 6 FT, SUBSIDING TO 4 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: NE 6 FT AT 13 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT.
WED
N WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
WED NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
AMZ364-180900-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY MORNING
TONIGHT
NE WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 5 TO 7 FT,
BUILDING TO 7 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: NE 7 FT AT
6 SECONDS, BECOMING NE 9 FT AT 7 SECONDS.
SUN
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. WAVE DETAIL: NE 9 FT
AT 7 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT, BUILDING TO
8 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: NE 9 FT AT 8 SECONDS.
MON
N WINDS 20 TO 25 KT WITH GUSTS TO 30 KT. SEAS 7 TO 9 FT,
SUBSIDING TO 6 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: NE 9 FT AT
9 SECONDS, BECOMING NE 8 FT AT 9 SECONDS.
MON NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO
7 FT. WAVE DETAIL: NE 7 FT AT 13 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 7 FT.
WAVE DETAIL: NE 7 FT AT 13 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
WED
N WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
THU
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU NIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
AMZ380-180900-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY EVENING
TONIGHT
N WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 9 TO 11 FT,
BUILDING TO 9 TO 12 FT AFTER MIDNIGHT. WAVE DETAIL: N 11 FT AT
7 SECONDS, BECOMING NE 12 FT AT 8 SECONDS. A CHANCE OF SHOWERS
EARLY THIS EVENING.
SUN
N WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 10 TO 12 FT,
BUILDING TO 10 TO 13 FT IN THE AFTERNOON. WAVE DETAIL: NE 11 FT
AT 8 SECONDS, BECOMING NE 12 FT AT 8 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS TO 40 KT. SEAS 10 TO
13 FT. WAVE DETAIL: NE 13 FT AT 9 SECONDS.
MON
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 10 TO 12 FT, SUBSIDING TO 9 TO 12 FT IN THE
AFTERNOON. WAVE DETAIL: NE 12 FT AT 13 SECONDS, BECOMING NE 12 FT
AT 14 SECONDS.
MON NIGHT
N WINDS 20 TO 25 KT. SEAS 9 TO 11 FT, SUBSIDING TO
8 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: NE 11 FT AT 14 SECONDS,
BECOMING NE 9 FT AT 13 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 7 TO 9 FT,
SUBSIDING TO 6 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: NE 8 FT AT
13 SECONDS, BECOMING NE 8 FT AT 12 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 6 TO
7 FT.
WED
N WINDS 20 TO 25 KT. SEAS 5 TO 7 FT.
WED NIGHT
N WINDS 15 TO 20 KT. SEAS 5 TO 6 FT.
THU
N WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
N WINDS 15 KT. SEAS 4 TO 6 FT.
AMZ382-180900-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY EVENING
TONIGHT
N WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 8 TO 10 FT,
BUILDING TO 9 TO 11 FT AFTER MIDNIGHT. WAVE DETAIL: N 10 FT AT
9 SECONDS AND N 9 FT AT 6 SECONDS, BECOMING NE 11 FT AT
8 SECONDS.
SUN
NE WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 9 TO 11 FT,
BUILDING TO 9 TO 12 FT IN THE AFTERNOON. WAVE DETAIL: NE 11 FT AT
8 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS TO 40 KT. SEAS 9 TO
12 FT, BUILDING TO 10 TO 12 FT AFTER MIDNIGHT. WAVE DETAIL: NE
12 FT AT 9 SECONDS.
MON
N WINDS 20 TO 25 KT WITH GUSTS TO 35 KT. SEAS 9 TO 11 FT.
WAVE DETAIL: NE 11 FT AT 12 SECONDS.
MON NIGHT
N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT, SUBSIDING TO
7 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: NE 10 FT AT 13 SECONDS,
BECOMING NE 9 FT AT 13 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 7 TO 8 FT,
SUBSIDING TO 6 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: NE 8 FT AT
13 SECONDS, BECOMING NE 8 FT AT 9 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 6 TO
7 FT.
WED
N WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
N WINDS 15 TO 20 KT. SEAS 5 TO 6 FT.
THU
N WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
THU NIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
AMZ384-180900-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
300 PM EDT SAT OCT 17 2026
..GALE WARNING IN EFFECT THROUGH MONDAY EVENING
TONIGHT
N WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 8 TO 10 FT,
BUILDING TO 9 TO 11 FT AFTER MIDNIGHT. WAVE DETAIL: NE 10 FT AT
9 SECONDS AND N 8 FT AT 6 SECONDS, BECOMING NE 11 FT AT
8 SECONDS.
SUN
N WINDS 30 KT WITH GUSTS TO 40 KT. SEAS 9 TO 11 FT. WAVE
DETAIL: NE 11 FT AT 8 SECONDS.
SUN NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS TO 40 KT. SEAS 9 TO
13 FT, BUILDING TO 10 TO 13 FT AFTER MIDNIGHT. WAVE DETAIL: NE
12 FT AT 9 SECONDS.
MON
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 9 TO 12 FT, SUBSIDING TO 9 TO 11 FT IN THE
AFTERNOON. WAVE DETAIL: NE 12 FT AT 9 SECONDS, BECOMING NE 11 FT
AT 12 SECONDS.
MON NIGHT
N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. WAVE DETAIL:
NE 10 FT AT 13 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 7 TO 9 FT,
SUBSIDING TO 6 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: NE 8 FT AT
13 SECONDS, BECOMING NE 8 FT AT 10 SECONDS.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 6 TO
7 FT.
WED
N WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
N WINDS 15 TO 20 KT. SEAS 5 TO 6 FT.
THU
N WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
THU NIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
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