097
FZUS52 KCHS 210939
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
538 AM EDT TUE JUL 21 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-212300-
538 AM EDT TUE JUL 21 2026
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA
AND NORTH COASTAL GEORGIA...
HIGH PRESSURE WILL REMAIN CENTERED OVER THE WESTERN ATLANTIC
WHILE A BROAD AREA OF LOW PRESSURE LINGERS ACROSS THE CENTRAL
CAROLINAS THROUGH EARLY THIS WEEK. A COLD FRONT MAY REACH THE
REGION BY THURSDAY, POSSIBLY BECOMING STATIONARY ALONG THE COAST
UNTIL THIS WEEKEND.
AMZ340-212300-
CHARLESTON HARBOR-
538 AM EDT TUE JUL 21 2026
TODAY
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT, INCREASING TO
15 TO 20 KT WITH GUSTS TO 25 KT THIS AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO
2 FT.
WED
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. WAVES 1 TO 2 FT.
WED NIGHT
S WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. WAVES 1 TO 2 FT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. A SLIGHT CHANCE
OF SHOWERS AND TSTMS IN THE MORNING, THEN A CHANCE OF SHOWERS AND
TSTMS IN THE AFTERNOON.
THU NIGHT
S WINDS 10 KT. A CHANCE OF TSTMS. SHOWERS LIKELY.
FRI
S WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.
FRI NIGHT
S WINDS 5 TO 10 KT. A CHANCE OF SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. SHOWERS AND TSTMS LIKELY.
SAT NIGHT
SW WINDS 5 TO 10 KT. SHOWERS LIKELY WITH A CHANCE OF
TSTMS.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.
CHARLESTON HARBOR WATER TEMPERATURE 87 DEGREES.
AMZ360-212300-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
538 AM EDT TUE JUL 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
LATE WEDNESDAY NIGHT...
TODAY
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT, BUILDING TO 4 TO
5 FT THIS AFTERNOON. WAVE DETAIL: S 4 FT AT 6 SECONDS, BECOMING S
5 FT AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS LATE THIS
MORNING.
TONIGHT
S WINDS 20 TO 25 KT. SEAS 4 TO 6 FT, BUILDING TO 5 TO
6 FT AFTER MIDNIGHT. WAVE DETAIL: S 6 FT AT 6 SECONDS.
WED
SW WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 6 FT. WAVE
DETAIL: S 5 FT AT 7 SECONDS.
WED NIGHT
S WINDS 20 TO 25 KT. SEAS 4 TO 5 FT, BUILDING TO
5 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: S 5 FT AT 6 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
THU
SW WINDS 15 TO 20 KT. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO
4 FT IN THE AFTERNOON. WAVE DETAIL: SE 5 FT AT 7 SECONDS,
BECOMING S 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF TSTMS.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND SE 3 FT AT 8 SECONDS. A CHANCE OF TSTMS. A
CHANCE OF SHOWERS.
FRI
S WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
S WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-212300-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
538 AM EDT TUE JUL 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
LATE WEDNESDAY NIGHT...
TODAY
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT, BUILDING TO 4 TO
5 FT THIS AFTERNOON. WAVE DETAIL: S 4 FT AT 6 SECONDS, BECOMING S
5 FT AT 6 SECONDS.
TONIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: SE
6 FT AT 7 SECONDS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO 5 FT.
WAVE DETAIL: S 4 FT AT 7 SECONDS.
WED NIGHT
S WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
5 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER
MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: S 4 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
TSTMS.
THU 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. A
CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
S WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT
SW WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-212300-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
538 AM EDT TUE JUL 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY EVENING...
TODAY
S WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT LATE.
SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT THIS AFTERNOON. WAVE
DETAIL: S 4 FT AT 5 SECONDS, BECOMING S 5 FT AT 5 SECONDS.
TONIGHT
S WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
5 FT AT 6 SECONDS.
WED
S 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: S 4 FT AT
6 SECONDS.
WED NIGHT
S WINDS 20 TO 25 KT, BECOMING SW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS.
THU
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT,
SUBSIDING TO 2 TO 3 FT IN THE AFTERNOON. WAVE DETAIL: SE 4 FT AT
7 SECONDS, BECOMING SE 3 FT AT 7 SECONDS.
THU 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. A
CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT NIGHT
SW WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ380-212300-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
538 AM EDT TUE JUL 21 2026
TODAY
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS UNTIL LATE AFTERNOON.
TONIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 7 SECONDS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 6 FT,
SUBSIDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: S 5 FT AT
7 SECONDS, BECOMING S 4 FT AT 7 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS IN THE MORNING.
WED NIGHT
S WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 5 FT. WAVE
DETAIL: S 5 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS
AFTER MIDNIGHT.
THU
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: S 5 FT AT 7 SECONDS, BECOMING SE 3 FT AT
8 SECONDS AND S 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: SE 3 FT AT 8 SECONDS AND SW 2 FT AT 5 SECONDS. A
CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 5 TO 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
S WINDS 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. SHOWERS LIKELY
WITH A CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ382-212300-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
538 AM EDT TUE JUL 21 2026
TODAY
S WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S 4 FT
AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS EARLY THIS
MORNING.
TONIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 6 SECONDS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO 6 FT,
SUBSIDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: S 5 FT AT
7 SECONDS, BECOMING S 3 FT AT 6 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: S 4 FT AT 7 SECONDS, BECOMING SE 3 FT AT
8 SECONDS AND SW 2 FT AT 5 SECONDS. A SLIGHT CHANCE OF TSTMS IN
THE MORNING. A SLIGHT CHANCE OF SHOWERS.
THU 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. A
CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
FRI NIGHT
S WINDS 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ384-212300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
538 AM EDT TUE JUL 21 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY EVENING...
TODAY
S WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S 5 FT
AT 6 SECONDS.
TONIGHT
S WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 5 FT. WAVE
DETAIL: SE 5 FT AT 6 SECONDS.
WED
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO 5 FT.
WAVE DETAIL: S 4 FT AT 5 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND SE 3 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS
IN THE MORNING.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 FT.
WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS. A
CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
FRI NIGHT
S WINDS 10 KT. SEAS 3 FT. A SLIGHT CHANCE OF SHOWERS
AND TSTMS.
SAT
SW WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND TSTMS.
SAT NIGHT
SW WINDS 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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