393
FZUS52 KCHS 202131
CWFCHS
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE CHARLESTON SC
531 PM EDT MON JUL 20 2026
SOUTH SANTEE RIVER SC TO ALTAMAHA SOUND GA OUT 60 NM, INCLUDING
CHARLESTON HARBOR AND GRAYS REEF NATIONAL MARINE SANCTUARY
AMZ300-211145-
531 PM EDT MON JUL 20 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.
AMZ340-211145-
CHARLESTON HARBOR-
531 PM EDT MON JUL 20 2026
TONIGHT
S WINDS 10 TO 15 KT. A SLIGHT CHANCE OF SHOWERS AND
TSTMS LATE.
TUE
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. WAVES BUILDING 1 TO 2 FT.
TUE NIGHT
S WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
WED
SW WINDS 15 TO 20 KT. WAVES 1 TO 2 FT. A CHANCE OF SHOWERS
WITH A SLIGHT CHANCE OF TSTMS IN THE MORNING.
WED NIGHT
S WINDS 10 TO 15 KT. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. A CHANCE OF
SHOWERS. A SLIGHT CHANCE OF TSTMS IN THE MORNING, THEN A CHANCE
OF TSTMS IN THE AFTERNOON.
THU NIGHT
S WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.
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
W 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.
AMZ360-211145-
COASTAL WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT
20 NM-
531 PM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...
TONIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS LATE.
TUE
SW WINDS 15 TO 20 KT. GUSTS TO 25 KT IN THE AFTERNOON.
SEAS 4 TO 5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS.
TUE NIGHT
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. A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
WED
SW WINDS 20 KT WITH GUSTS TO 25 KT. SEAS 5 TO 6 FT. WAVE
DETAIL: S 6 FT AT 7 SECONDS. A CHANCE OF SHOWERS AND TSTMS IN THE
MORNING.
WED NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 6 SECONDS. A SLIGHT CHANCE OF TSTMS. A SLIGHT CHANCE OF
SHOWERS IN THE EVENING, THEN A CHANCE OF SHOWERS 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: S 5 FT AT 7 SECONDS, BECOMING
S 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF
TSTMS IN THE MORNING, THEN A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
FRI NIGHT
S WINDS 5 TO 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
W WINDS 5 TO 10 KT. SEAS 3 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ362-211145-
COASTAL WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
531 PM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...
TONIGHT
S WINDS 15 TO 20 KT. SEAS 2 TO 3 FT, BUILDING TO 3 TO
4 FT AFTER MIDNIGHT. WAVE DETAIL: S 3 FT AT 5 SECONDS, BECOMING S
4 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS LATE.
TUE
S WINDS 15 TO 20 KT. GUSTS TO 25 KT IN THE AFTERNOON. SEAS
3 TO 4 FT, BUILDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: S
4 FT AT 6 SECONDS.
TUE NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: SE
6 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER
MIDNIGHT.
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 4 FT AT
7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE MORNING.
WED NIGHT
S WINDS 20 TO 25 KT. SEAS 5 FT, THEN 4 TO 6 FT AFTER
MIDNIGHT. WAVE DETAIL: S 5 FT AT 6 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 4 TO 5 FT,
SUBSIDING TO 3 FT IN THE AFTERNOON. WAVE DETAIL: S 4 FT AT
6 SECONDS, BECOMING SE 3 FT AT 8 SECONDS AND S 2 FT AT 5 SECONDS.
A SLIGHT CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS IN THE
AFTERNOON.
THU NIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT. A
CHANCE OF TSTMS. A CHANCE OF SHOWERS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 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 5 TO 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND
TSTMS.
SAT NIGHT
SW WINDS 10 KT. SEAS 3 FT. SHOWERS LIKELY WITH A
CHANCE OF TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ364-211145-
COASTAL WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM,
INCLUDING GRAYS REEF NATIONAL MARINE SANCTUARY-
531 PM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...
TONIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 5 SECONDS.
TUE
S WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT, BUILDING TO 4 TO 5 FT IN THE
AFTERNOON. WAVE DETAIL: S 4 FT AT 6 SECONDS, BECOMING SE 5 FT AT
6 SECONDS.
TUE NIGHT
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 5 FT.
WAVE DETAIL: SE 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 6 SECONDS.
THU
SW WINDS 10 TO 15 KT, BECOMING S WITH GUSTS TO 20 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT, SUBSIDING TO 2 TO 3 FT IN THE
AFTERNOON. WAVE DETAIL: SE 3 FT AT 6 SECONDS, BECOMING S 2 FT AT
5 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON.
THU NIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS AND TSTMS.
FRI
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 3 FT. A SLIGHT 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 2 TO 3 FT. A CHANCE OF SHOWERS
AND TSTMS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
AMZ380-211145-
WATERS FROM SOUTH SANTEE RIVER SC TO EDISTO BEACH SC EXTENDING
FROM 20 TO 60 NM-
531 PM EDT MON JUL 20 2026
TONIGHT
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 6 SECONDS. A
SLIGHT CHANCE OF SHOWERS AND TSTMS LATE.
TUE
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.
TUE NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER
MIDNIGHT.
WED
SW WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S 5 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 TO 6 FT.
WAVE DETAIL: S 6 FT AT 7 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
THU
SW WINDS 15 TO 20 KT. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO
4 FT IN THE AFTERNOON. WAVE DETAIL: S 5 FT AT 7 SECONDS, BECOMING
S 4 FT AT 7 SECONDS. A CHANCE OF SHOWERS. A CHANCE OF TSTMS,
MAINLY IN THE MORNING.
THU NIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT. A
CHANCE OF SHOWERS AND TSTMS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 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 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.
AMZ382-211145-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA EXTENDING FROM 20 TO
60 NM-
531 PM EDT MON JUL 20 2026
TONIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS LATE.
TUE
S 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 IN THE MORNING.
TUE NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER
MIDNIGHT.
WED
S 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 4 FT AT
7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE MORNING.
WED NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 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 6 SECONDS, BECOMING SE 3 FT AT
8 SECONDS AND SW 2 FT AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS
AND TSTMS IN THE MORNING.
THU NIGHT
S WINDS 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO 4 FT. A
CHANCE OF SHOWERS AND TSTMS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
FRI NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 10 TO 15 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.
AMZ384-211145-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
531 PM EDT MON JUL 20 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...
TONIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 5 SECONDS.
TUE
S WINDS 15 TO 20 KT. GUSTS TO 25 KT IN THE AFTERNOON. SEAS
4 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS.
TUE NIGHT
S WINDS 20 TO 25 KT. SEAS 5 TO 6 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.
WAVE DETAIL: S 4 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS.
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.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. SEAS 3 TO
4 FT. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE EVENING, THEN A
CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT.
FRI
SW 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 3 FT. A SLIGHT CHANCE OF
SHOWERS AND TSTMS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 FT. A SLIGHT 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.
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