546
FZUS52 KCHS 210939
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 AM EDT SAT MAR 21 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
AMZ300-212300-
539 AM EDT SAT MAR 21 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
HIGH PRESSURE WILL PREVAIL THROUGH THE WEEKEND. A BACKDOOR COLD
FRONT WILL DROP THROUGH THE AREA EARLY NEXT WEEK, FOLLOWED BY
ANOTHER AREA OF HIGH PRESSURE.
AMZ330-212300-
CHARLESTON HARBOR-
539 AM EDT SAT MAR 21 2026
TODAY
W WINDS 10 KT.
TONIGHT
SW WINDS 5 TO 10 KT.
SUN
SW WINDS 5 TO 10 KT.
SUN NIGHT
SW WINDS 10 KT.
MON
SW WINDS 10 KT. A SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
MON NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT WITH
GUSTS TO 25 KT AFTER MIDNIGHT. WAVES 1 TO 2 FT. A SLIGHT CHANCE
OF TSTMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS.
TUE
NE WINDS 15 TO 20 KT. WAVES 1 TO 2 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. A SLIGHT CHANCE OF SHOWERS.
WED
NE WINDS 5 KT. A SLIGHT CHANCE OF SHOWERS.
WED NIGHT
E WINDS 5 KT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 60 DEGREES.
AMZ350-212300-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
539 AM EDT SAT MAR 21 2026
TODAY
W WINDS 15 TO 20 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
TO 20 KT THIS AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND E 3 FT AT 10 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND E 3 FT AT 10 SECONDS.
SUN
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
SUN NIGHT
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SW 4 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
MON
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 6 SECONDS AND E 2 FT AT 9 SECONDS. A SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT
NW WINDS 15 TO 20 KT, BECOMING NE 25 TO 30 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT.
WAVE DETAIL: SW 4 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS,
BECOMING NE 5 FT AT 5 SECONDS AND SW 2 FT AT 5 SECONDS. A SLIGHT
CHANCE OF TSTMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT.
TUE NIGHT
NE WINDS 20 TO 25 KT. SEAS 5 TO 7 FT. A SLIGHT
CHANCE OF SHOWERS.
WED
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A SLIGHT CHANCE OF
SHOWERS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ352-212300-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 AM EDT SAT MAR 21 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 10 SECONDS AND SW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND E 3 FT AT 10 SECONDS.
SUN
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND E 3 FT AT 10 SECONDS.
SUN NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT 10 SECONDS.
MON
SW WINDS 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. A SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT
W WINDS 15 TO 20 KT, BECOMING NE 25 TO 30 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT AFTER MIDNIGHT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS,
BECOMING NE 4 FT AT 4 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE
OF TSTMS IN THE EVENING. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. A SLIGHT CHANCE OF
SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT. SEAS 6 TO 8 FT. A CHANCE OF
SHOWERS.
WED
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A SLIGHT CHANCE OF
SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ354-212300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
539 AM EDT SAT MAR 21 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 10 SECONDS AND SW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 10 SECONDS AND SW 2 FT AT 3 SECONDS.
SUN
W WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SW 2 FT AT
4 SECONDS.
SUN NIGHT
SW WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 3 FT AT 10 SECONDS.
MON
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO
3 FT IN THE AFTERNOON. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E
2 FT AT 9 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT, BECOMING NE 25 TO 30 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 4 FT AFTER MIDNIGHT.
WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS,
BECOMING NE 4 FT AT 4 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TUE
NE WINDS 25 TO 30 KT. SEAS 6 TO 8 FT. A SLIGHT CHANCE OF
SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT. SEAS 6 TO 8 FT. A CHANCE OF
SHOWERS.
WED
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. A SLIGHT CHANCE OF
SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ374-212300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
539 AM EDT SAT MAR 21 2026
TODAY
SW WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND SW 3 FT AT 4 SECONDS.
SUN
SW WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 4 FT
AT 10 SECONDS AND SW 3 FT AT 4 SECONDS.
SUN NIGHT
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS
AND E 3 FT AT 9 SECONDS.
MON
W WINDS 15 TO 20 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, BECOMING
NE 20 TO 25 KT WITH GUSTS TO 35 KT AFTER MIDNIGHT. SEAS 3 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND E 2 FT AT 9 SECONDS, BECOMING N 5 FT AT
4 SECONDS AND W 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
TUE
NE WINDS 25 TO 30 KT. SEAS 7 TO 9 FT. A SLIGHT CHANCE OF
SHOWERS.
TUE NIGHT
E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. A CHANCE OF
SHOWERS.
WED
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. A SLIGHT CHANCE OF
SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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