360
FZUS52 KCHS 212139
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
539 PM 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
AMZ300-221100-
539 PM 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.
AMZ330-221100-
CHARLESTON HARBOR-
539 PM EDT SAT MAR 21 2026
TONIGHT
SW WINDS 10 KT, DIMINISHING TO 5 KT AFTER MIDNIGHT.
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
NW WINDS 5 TO 10 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 WITH GUSTS TO 30 KT. WAVES 1 TO 2 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. A SLIGHT CHANCE OF SHOWERS IN
THE EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NE WINDS 10 KT. A SLIGHT CHANCE OF SHOWERS.
WED NIGHT
E WINDS 5 KT.
THU
SE WINDS 5 TO 10 KT.
THU NIGHT
SW WINDS 5 KT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 61 DEGREES.
AMZ350-221100-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
539 PM EDT SAT MAR 21 2026
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
W WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT IN THE
AFTERNOON. 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 4 TO 5 FT. WAVE DETAIL:
SW 4 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
MON
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 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
W WINDS 15 TO 20 KT, BECOMING NE 25 TO 30 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND
NE 4 FT AT 9 SECONDS. A SLIGHT CHANCE OF TSTMS IN THE EVENING. A
CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 6 TO 8 FT, BUILDING TO 7 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: NE 8 FT AT 7 SECONDS AND S
1 FOOT AT 5 SECONDS, BECOMING E 9 FT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT,
DIMINISHING TO 15 TO 20 KT AFTER MIDNIGHT. SEAS 7 TO 9 FT,
SUBSIDING TO 5 TO 7 FT AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS
IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. A SLIGHT CHANCE OF
SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ352-221100-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
539 PM EDT SAT MAR 21 2026
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 9 SECONDS.
MON
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.
MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS 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 9 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 5 TO 7 FT, BUILDING TO 7 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: NE 7 FT AT 6 SECONDS AND S
1 FOOT AT 5 SECONDS, BECOMING E 9 FT AT 8 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT
AFTER MIDNIGHT. SEAS 7 TO 9 FT, SUBSIDING TO 6 TO 8 FT AFTER
MIDNIGHT. A CHANCE OF SHOWERS.
WED
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ354-221100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
539 PM EDT SAT MAR 21 2026
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 4 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 9 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 5 SECONDS AND E
2 FT AT 9 SECONDS, BECOMING SW 3 FT AT 4 SECONDS AND E 2 FT AT
9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT, BECOMING N 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 E 4 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
TUE
NE WINDS 25 TO 30 KT. SEAS 5 TO 7 FT, BUILDING TO 7 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: NE 7 FT AT 6 SECONDS AND S
1 FOOT AT 4 SECONDS, BECOMING NE 9 FT AT 7 SECONDS. A SLIGHT
CHANCE OF SHOWERS IN THE MORNING, THEN A CHANCE OF SHOWERS IN THE
AFTERNOON.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS TO 30 KT,
DIMINISHING TO 15 TO 20 KT AFTER MIDNIGHT. SEAS 7 TO 9 FT,
SUBSIDING TO 6 TO 8 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS.
WED
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
THU
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU NIGHT
S WINDS 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ374-221100-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-
539 PM EDT SAT MAR 21 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 4 TO
6 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
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. 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 N
25 TO 30 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 E 4 FT AT 9 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 6 TO 8 FT, BUILDING TO 9 TO
11 FT IN THE AFTERNOON. WAVE DETAIL: NE 8 FT AT 7 SECONDS AND S
1 FOOT AT 4 SECONDS, BECOMING NE 11 FT AT 8 SECONDS. A SLIGHT
CHANCE OF TSTMS IN THE MORNING. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 20 TO 25 KT, BECOMING E 15 TO 20 KT AFTER
MIDNIGHT. SEAS 9 TO 11 FT, SUBSIDING TO 7 TO 9 FT AFTER MIDNIGHT.
A CHANCE OF SHOWERS.
WED
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
THU
E WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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