161
FZUS52 KJAX 181201
CWFJAX
COASTAL WATERS FORECAST FOR NORTHEAST FLORIDA/SOUTHEAST GEORGIA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
801 AM EDT SAT JUL 18 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.
AMZ400-190315-
SYNOPSIS FOR ALTAMAHA SOUND GA TO FLAGLER BEACH FL OUT TO 60 NM-
801 AM EDT SAT JUL 18 2026
SYNOPSIS
BERMUDA HIGH PRESSURE WILL EXTEND A RIDGE AXIS ACROSS SOUTHERN
FLORIDA TODAY, SHIFTING WINDS SOUTHERLY ACROSS THE LOCAL WATERS
TODAY. AS WINDS SHIFT THEY WILL STRENGTHEN TO EXERCISE CAUTION
LEVELS BETWEEN A TROUGH OVER THE SOUTHEASTERN US AND THE RIDGE AXIS
TO THE SOUTH. DRIER AIR MOVING INTO THE COASTAL WATERS WILL LIMIT
THUNDERSTORM POTENTIAL THROUGH THE WEEKEND AND POSSIBLY INTO NEXT
WEEK.
THERE'S GREATER UNCERTAINTY IN THE FORECAST NEXT WEEK REGARDING THE
POTENTIAL FOR TROPICAL DEVELOPMENT IN THE NORTHEASTERN GULF. THAT
SYSTEM IS NOW MORE LIKELY TO DRIFT NORTHWEST THROUGH THE FIRST HALF
OF NEXT WEEK. FOR THE SECOND HALF OF NEXT WEEK, A PROLONGED OFFSHORE
FLOW IS LIKELY TO REMAIN IN PLACE WITH NOCTURNAL SOUTHERLY WIND
SURGES AS A COLD FRONT APPROACHES FROM THE NORTHWEST.
GULF STREAM
THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF
JUL 17, 2026 AT 0000 UTC...
46 NAUTICAL MILES EAST OF FLAGLER BEACH.
49 NAUTICAL MILES EAST OF SAINT AUGUSTINE BEACH.
60 NAUTICAL MILES EAST SOUTHEAST OF JACKSONVILLE BEACH.
71 NAUTICAL MILES EAST SOUTHEAST OF ST SIMONS ISLAND.
THIS DATA DERIVED FROM NCEP GLOBAL RTOFS MODEL.
AMZ450-452-454-190315-
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-
801 AM EDT SAT JUL 18 2026
...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 4 PM EDT THIS
AFTERNOON THROUGH THIS EVENING...
REST OF TODAY
SOUTH WINDS AROUND 10 KNOTS, BECOMING SOUTHEAST
15 TO 20 KNOTS THIS AFTERNOON. SEAS 2 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 4 SECONDS. INTRACOASTAL
WATERS CHOPPY.
TONIGHT
SOUTH WINDS 15 TO 20 KNOTS, BECOMING SOUTHWEST 10 TO
15 KNOTS AFTER MIDNIGHT. SEAS 2 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: SOUTHEAST 4 FEET AT 5 SECONDS AND EAST
2 FEET AT 8 SECONDS. INTRACOASTAL WATERS CHOPPY.
SUNDAY
SOUTH WINDS 10 TO 15 KNOTS, BECOMING SOUTHEAST 15 TO
20 KNOTS IN THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL:
SOUTHEAST 3 FEET AT 5 SECONDS AND EAST 2 FEET AT 8 SECONDS.
INTRACOASTAL WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTH WINDS 15 TO 20 KNOTS, DIMINISHING TO 10 TO
15 KNOTS AFTER MIDNIGHT. SEAS 2 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT 5 SECONDS AND EAST
2 FEET AT 8 SECONDS. INTRACOASTAL WATERS CHOPPY.
MONDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT
6 SECONDS. INTRACOASTAL WATERS A MODERATE CHOP. A CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MONDAY NIGHT
SOUTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: SOUTHEAST 3 FEET AT
5 SECONDS. INTRACOASTAL WATERS CHOPPY. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING.
TUESDAY
SOUTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET,
OCCASIONALLY TO 6 FEET. INTRACOASTAL WATERS CHOPPY. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN A CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. A SLIGHT CHANCE OF SHOWERS THROUGH
THE NIGHT.
WEDNESDAY
SOUTH WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET,
OCCASIONALLY TO 5 FEET. INTRACOASTAL WATERS CHOPPY. A CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
AMZ470-472-474-190315-
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-
801 AM EDT SAT JUL 18 2026
...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 4 PM EDT THIS
AFTERNOON THROUGH LATE TONIGHT...
REST OF TODAY
SOUTH WINDS 10 TO 15 KNOTS, INCREASING TO 15 TO
20 KNOTS THIS AFTERNOON. SEAS 2 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: SOUTH 4 FEET AT 5 SECONDS.
TONIGHT
SOUTH WINDS 15 TO 20 KNOTS, DIMINISHING TO 10 TO
15 KNOTS AFTER MIDNIGHT. SEAS 3 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: SOUTH 4 FEET AT 5 SECONDS AND SOUTHEAST
2 FEET AT 8 SECONDS.
SUNDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
SUNDAY NIGHT
SOUTH WINDS 15 TO 20 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: SOUTH 4 FEET AT 5 SECONDS
AND EAST 2 FEET AT 8 SECONDS.
MONDAY AND MONDAY NIGHT
SOUTH WINDS 15 TO 20 KNOTS. SEAS 3 TO
4 FEET, OCCASIONALLY TO 5 FEET. WAVE DETAIL: SOUTHEAST 4 FEET AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
TUESDAY THROUGH WEDNESDAY
SOUTH WINDS 15 TO 20 KNOTS. SEAS
3 TO 5 FEET, OCCASIONALLY TO 6 FEET. WAVE DETAIL: SOUTHEAST
5 FEET AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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