655  
FZUS52 KJAX 121715  
CWFJAX  
 
COASTAL WATERS FORECAST FOR NORTHEAST FLORIDA/SOUTHEAST GEORGIA  
NATIONAL WEATHER SERVICE JACKSONVILLE FL  
115 PM EDT SAT SEP 12 2026  
 
ATLANTIC COASTAL WATERS FROM ALTAMAHA SOUND GA TO FLAGLER BEACH  
FL OUT TO 60 NM.  
 
SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST  
1/3 OF THE WAVES, ALONG WITH THE OCCASIONAL HEIGHT OF THE AVERAGE  
HIGHEST 1/10 OF THE WAVES.  
 
AMZ400-130800-  
SYNOPSIS FOR ALTAMAHA SOUND GA TO FLAGLER BEACH FL OUT TO 60 NM-  
115 PM EDT SAT SEP 12 2026  
   
SYNOPSIS
 
 
WEAKENING HIGH PRESSURE SOUTH OF THE AREA WILL MAINTAIN SOUTH TO  
SOUTHWEST WINDS AND AFTERNOON SEA BREEZES THROUGH THE REST OF THE  
WEEKEND. DAILY MID TO LATE AFTERNOON THUNDERSTORMS WILL MOVE  
OFFSHORE, BRINGING LOCALLY STRONG WIND GUSTS AND FREQUENT LIGHTNING  
AT TIMES. ON TUESDAY, A COLD FRONT WILL PUSH SOUTH, SENDING A STRONG  
NORTHEASTERLY WIND SURGE THROUGH THE LOCAL WATERS AND ELEVATING  
SEAS. SMALL CRAFT ADVISORY CONDITIONS ARE PROBABLE FOR THE COASTAL  
WATERS STARTING TUESDAY AND MAY CONTINUE INTO WEDNESDAY AND  
POSSIBLY THURSDAY.  
 
   
GULF STREAM
 
 
THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF  
SEP 12, 2026 AT 0000 UTC...  
 
50 NAUTICAL MILES EAST OF FLAGLER BEACH.  
58 NAUTICAL MILES EAST OF SAINT AUGUSTINE BEACH.  
64 NAUTICAL MILES EAST SOUTHEAST OF JACKSONVILLE BEACH.  
76 NAUTICAL MILES EAST SOUTHEAST OF ST SIMONS ISLAND.  
 
THIS DATA DERIVED FROM NCEP GLOBAL RTOFS MODEL.  
 

 
 
AMZ450-452-454-130800-  
COASTAL WATERS FROM ALTAMAHA SOUND TO FERNANDINA BEACH FL OUT  
20 NM-  
COASTAL WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL OUT  
20 NM-  
COASTAL WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM-  
115 PM EDT SAT SEP 12 2026  
   
REST OF TODAY
 
SOUTHEAST WINDS AROUND 5 KNOTS, INCREASING TO  
10 TO 15 KNOTS THIS AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:  
SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 2 FEET AT 8 SECONDS.  
INTRACOASTAL WATERS A MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS LATE THIS MORNING, THEN A CHANCE OF SHOWERS AND  
THUNDERSTORMS THIS AFTERNOON.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE  
DETAIL: SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 2 FEET AT  
8 SECONDS. INTRACOASTAL WATERS LIGHT CHOP. A SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE EVENING.    
SUNDAY
 
WEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHEAST IN THE  
AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT  
5 SECONDS AND EAST 2 FEET AT 8 SECONDS. INTRACOASTAL WATERS LIGHT  
CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.    
SUNDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS, BECOMING WEST AFTER  
MIDNIGHT. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTHEAST 2 FEET AT  
9 SECONDS. INTRACOASTAL WATERS LIGHT CHOP.    
MONDAY AND MONDAY NIGHT
 
EAST WINDS 5 TO 10 KNOTS. SEAS AROUND  
2 FEET. WAVE DETAIL: EAST 2 FEET AT 9 SECONDS. INTRACOASTAL  
WATERS LIGHT CHOP.    
TUESDAY
 
NORTHEAST WINDS 25 TO 30 KNOTS. SEAS 2 TO 4 FEET,  
OCCASIONALLY TO 5 FEET, BUILDING TO 6 TO 8 FEET, OCCASIONALLY TO  
10 FEET. WAVE DETAIL: EAST 3 FEET AT 8 SECONDS, BECOMING  
NORTHEAST 8 FEET AT 7 SECONDS. INTRACOASTAL WATERS VERY ROUGH. A  
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE  
MORNING, THEN SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF  
THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS AFTER  
MIDNIGHT.    
WEDNESDAY
 
NORTHEAST WINDS 25 TO 30 KNOTS. SEAS 6 TO 9 FEET,  
OCCASIONALLY TO 11 FEET. INTRACOASTAL WATERS VERY ROUGH. A SLIGHT  
CHANCE OF SHOWERS IN THE MORNING, THEN A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH THE NIGHT. A CHANCE OF SHOWERS. A CHANCE OF  
THUNDERSTORMS AFTER MIDNIGHT.  
 
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
AMZ470-472-474-130800-  
WATERS FROM ALTAMAHA SOUND GA TO FERNANDINA BEACH FL FROM 20 TO  
60 NM-  
WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL FROM 20 TO 60 NM-  
WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL FROM 20 TO 60 NM-  
115 PM EDT SAT SEP 12 2026  
   
REST OF TODAY
 
SOUTH WINDS AROUND 10 KNOTS. SEAS 2 TO 3 FEET.  
WAVE DETAIL: SOUTHEAST 3 FEET AT 8 SECONDS. A SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS.    
TONIGHT
 
SOUTHWEST WINDS 10 TO 15 KNOTS. SEAS AROUND 3 FEET.  
WAVE DETAIL: SOUTHEAST 3 FEET AT 8 SECONDS AND SOUTH 2 FEET AT  
4 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
SUNDAY
 
WEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH IN THE  
AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT  
8 SECONDS AND SOUTH 2 FEET AT 4 SECONDS.    
SUNDAY NIGHT
 
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST  
AFTER MIDNIGHT. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET  
AT 9 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.    
MONDAY AND MONDAY NIGHT
 
NORTHEAST WINDS 5 TO 10 KNOTS. SEAS  
2 TO 3 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 9 SECONDS. A SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS.    
TUESDAY
 
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 2 TO 4 FEET,  
OCCASIONALLY TO 5 FEET, BUILDING TO 6 TO 9 FEET, OCCASIONALLY TO  
11 FEET. WAVE DETAIL: NORTHEAST 4 FEET AT 9 SECONDS, BECOMING  
NORTHEAST 8 FEET AT 7 SECONDS. A CHANCE OF SHOWERS IN THE  
MORNING. A CHANCE OF THUNDERSTORMS THROUGH THE DAY. SHOWERS  
LIKELY IN THE AFTERNOON, THEN A CHANCE OF SHOWERS WITH A SLIGHT  
CHANCE OF THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF  
SHOWERS AFTER MIDNIGHT.    
WEDNESDAY
 
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 7 TO 9 FEET,  
OCCASIONALLY TO 11 FEET, SUBSIDING TO 6 TO 7 FEET, OCCASIONALLY  
TO 9 FEET AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS IN THE  
MORNING, THEN A SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE NIGHT.  
A CHANCE OF SHOWERS. A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT.  
 
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.  
 

 
 
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