340  
FZUS52 KCHS 071717  
CWFCHS  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE CHARLESTON SC  
117 PM EDT MON JUL 7 2025  
 
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  
 
AMZ300-080630-  
117 PM EDT MON JUL 7 2025  
 
.SYNOPSIS FOR THE COASTAL WATERS OF SOUTH COASTAL SOUTH CAROLINA  
AND NORTH COASTAL GEORGIA...  
WEAK HIGH PRESSURE HOLDS TIGHT ACROSS THE REGION THROUGH THE  
WEEK, WITH TYPICAL SUMMERTIME CONVECTION POSSIBLE DAILY ALONG THE  
ADVANCING SEA BREEZE.  
 
 
 
AMZ330-080630-  
CHARLESTON HARBOR-  
117 PM EDT MON JUL 7 2025  
   
THIS AFTERNOON  
S WINDS 10 TO 15 KT WITH GUSTS TO 20 KT. A  
SLIGHT CHANCE OF SHOWERS AND TSTMS EARLY.    
TONIGHT  
SW WINDS 5 TO 10 KT.    
TUE  
SW WINDS 5 KT, BECOMING S IN THE AFTERNOON. A CHANCE OF  
SHOWERS AND TSTMS IN THE AFTERNOON.    
TUE NIGHT  
S WINDS 5 TO 10 KT. A SLIGHT CHANCE OF SHOWERS AND  
TSTMS.    
WED  
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. A CHANCE OF SHOWERS AND TSTMS.   
WED NIGHT  
S WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.    
THU  
SW WINDS 10 TO 15 KT. SHOWERS AND TSTMS LIKELY.    
THU NIGHT  
SW WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.   
FRI  
SW WINDS 10 TO 15 KT. SHOWERS AND TSTMS LIKELY.    
FRI NIGHT  
SW WINDS 10 TO 15 KT. A CHANCE OF SHOWERS AND TSTMS.  
 
 
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.  
 
UNLESS OTHERWISE NOTED, WAVES 1 FOOT OR LESS.  
 
CHARLESTON HARBOR WATER TEMPERATURE 85 DEGREES.  
 
 
 
AMZ350-080630-  
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-  
117 PM EDT MON JUL 7 2025  
   
THIS AFTERNOON  
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE  
DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS. A SLIGHT  
CHANCE OF SHOWERS AND TSTMS EARLY.    
TONIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: S 3 FT  
AT 6 SECONDS.    
TUE  
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT  
7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS.    
TUE NIGHT  
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT  
AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AND TSTMS  
AFTER MIDNIGHT.    
WED  
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT  
AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
WED NIGHT  
S WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: SE 3 FT  
AT 8 SECONDS AND S 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
THU  
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
THU NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. SHOWERS LIKELY  
WITH A CHANCE OF TSTMS.    
FRI  
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
FRI 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.  
 
 
 
AMZ352-080630-  
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-  
117 PM EDT MON JUL 7 2025  
   
THIS AFTERNOON  
S WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: E  
3 FT AT 7 SECONDS.    
TONIGHT  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE  
3 FT AT 7 SECONDS.    
TUE  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT  
AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS.    
TUE NIGHT  
S WINDS 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AND TSTMS  
AFTER MIDNIGHT.    
WED  
S WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
WED NIGHT  
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT  
AT 4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
THU  
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
THU NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
FRI  
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI 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.  
 
 
 
AMZ354-080630-  
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM, INCLUDING  
GRAYS REEF NATIONAL MARINE SANCTUARY-  
117 PM EDT MON JUL 7 2025  
   
THIS AFTERNOON  
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE  
DETAIL: E 3 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS  
LATE.    
TONIGHT  
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E  
3 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS IN THE  
EVENING.    
TUE  
SW WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS  
2 FT. WAVE DETAIL: SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS IN THE AFTERNOON.    
TUE NIGHT  
S WINDS 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS.    
WED  
S WINDS 5 TO 10 KT. SEAS 2 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
WED NIGHT  
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S  
2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS.  
A CHANCE OF TSTMS, MAINLY IN THE EVENING.    
THU  
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
THU NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.    
FRI  
SW WINDS 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS AND  
TSTMS.    
FRI NIGHT  
SW WINDS 10 TO 15 KT. SEAS 3 FT. A CHANCE OF SHOWERS  
AND TSTMS.  
 
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.  
 
 
 
AMZ374-080630-  
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA FROM 20 TO 60 NM-  
117 PM EDT MON JUL 7 2025  
   
THIS AFTERNOON  
S WINDS 10 TO 15 KT. SEAS 3 FT. WAVE DETAIL: E  
3 FT AT 7 SECONDS.    
TONIGHT  
SW WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT  
AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS AND TSTMS AFTER  
MIDNIGHT.    
TUE  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT  
AT 8 SECONDS AND E 1 FOOT AT 14 SECONDS. A SLIGHT CHANCE OF  
SHOWERS AND TSTMS IN THE MORNING.    
TUE NIGHT  
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT  
AT 3 SECONDS AND SE 2 FT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS  
AND TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AND TSTMS  
AFTER MIDNIGHT.    
WED  
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT  
4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
WED NIGHT  
S WINDS 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT  
AT 7 SECONDS AND S 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS AND  
TSTMS.    
THU  
SW WINDS 10 KT. SEAS 3 FT. A CHANCE OF SHOWERS AND TSTMS.    
THU NIGHT  
SW WINDS 10 TO 15 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  
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.  
 
 
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