421
FZUS52 KJAX 091826
CWFJAX
COASTAL WATERS FORECAST FOR NORTHEAST FLORIDA/SOUTHEAST GEORGIA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
226 PM EDT WED SEP 9 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.
AMZ400-100900-
SYNOPSIS FOR ALTAMAHA SOUND GA TO FLAGLER BEACH FL OUT TO 60 NM-
226 PM EDT WED SEP 9 2026
SYNOPSIS
A STALLED FRONTAL BOUNDARY POSITIONED ACROSS CENTRAL FLORIDA WILL
LIFT SLOWLY NORTHWARD AS A WARM FRONT LATE THIS AFTERNOON AND
TONIGHT BEFORE DISSIPATING OVER THE NORTHEAST FLORIDA WATERS ON
THURSDAY. MEANWHILE, STRONG HIGH PRESSURE STRETCHING ACROSS THE
CAROLINAS AND THE SOUTHERN APPALACHIANS WILL GRADUALLY WEAKEN AS IT
SHIFTS OFFSHORE OF THE SOUTHEASTERN STATES TONIGHT AND THURSDAY AS A
COLD FRONT PUSHES THROUGH THE OHIO AND TENNESSEE VALLEYS. THIS
WEATHER PATTERN WILL RESULT IN GRADUALLY WEAKENING ONSHORE WINDS
THAT WILL ALLOW SEAS TO SUBSIDE BELOW CAUTION LEVELS OVER THE
GEORGIA AND OFFSHORE WATERS ADJACENT TO NORTHEAST FLORIDA THIS
AFTERNOON. SHOWERS AND A FEW EMBEDDED THUNDERSTORMS WILL REMAIN
POSSIBLE THROUGH TONIGHT, WITH A DECREASE IN ACTIVITY POSSIBLE ON
THURSDAY. PREVAILING WINDS WILL BECOME SOUTHERLY TONIGHT AND
THURSDAY AND THEN SOUTHWESTERLY FROM FRIDAY THROUGH THE UPCOMING
WEEKEND, WITH THE AFTERNOON SEA BREEZE SHIFTING WINDS TO
SOUTHEASTERLY EACH AFTERNOON ACROSS THE NEAR SHORE WATERS. SHOWERS
AND THUNDERSTORMS DEVELOPING OVER COASTAL LOCATIONS DURING THE
AFTERNOON HOURS WILL SHIFT EASTWARD ACROSS OUR LOCAL WATERS DURING
THE LATE AFTERNOON AND EVENING HOURS FROM FRIDAY THROUGH THE
UPCOMING WEEKEND.
GULF STREAM
THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF
SEP 09, 2026 AT 0000 UTC...
50 NAUTICAL MILES EAST OF FLAGLER BEACH.
58 NAUTICAL MILES EAST OF SAINT AUGUSTINE BEACH.
70 NAUTICAL MILES EAST SOUTHEAST OF JACKSONVILLE BEACH.
76 NAUTICAL MILES EAST SOUTHEAST OF ST SIMONS ISLAND.
THIS DATA DERIVED FROM NCEP GLOBAL RTOFS MODEL.
AMZ450-452-454-100900-
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-
226 PM EDT WED SEP 9 2026
REST OF TODAY
EAST WINDS 10 TO 15 KNOTS. SEAS AROUND 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 4 FEET AT 8 SECONDS.
INTRACOASTAL WATERS A MODERATE CHOP. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS AFTER MIDNIGHT. SEAS 3 TO 4 FEET, OCCASIONALLY TO
5 FEET. WAVE DETAIL: EAST 4 FEET AT 8 SECONDS. INTRACOASTAL
WATERS A MODERATE CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT.
THURSDAY
SOUTHEAST WINDS 5 TO 10 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 3 FEET AT 7 SECONDS.
INTRACOASTAL WATERS LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: EAST 3 FEET AT 7 SECONDS AND SOUTHEAST 2 FEET AT
4 SECONDS. INTRACOASTAL WATERS LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
FRIDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHEAST IN
THE AFTERNOON. SEAS 2 TO 3 FEET. WAVE DETAIL: EAST 2 FEET AT
7 SECONDS. INTRACOASTAL WATERS LIGHT CHOP. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN A CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 4 SECONDS AND EAST 2 FEET AT
7 SECONDS. INTRACOASTAL WATERS LIGHT CHOP. A CHANCE OF SHOWERS
AND THUNDERSTORMS, MAINLY IN THE EVENING.
SATURDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET.
INTRACOASTAL WATERS LIGHT CHOP. A CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE DAY, THEN A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS THROUGH THE NIGHT.
SUNDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
INTRACOASTAL WATERS LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
AMZ470-472-474-100900-
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-
226 PM EDT WED SEP 9 2026
REST OF TODAY
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 5 FEET,
OCCASIONALLY TO 6 FEET. WAVE DETAIL: EAST 5 FEET AT 8 SECONDS. A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS AFTER MIDNIGHT. SEAS 4 TO 5 FEET, OCCASIONALLY TO
6 FEET. WAVE DETAIL: EAST 5 FEET AT 8 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 3 TO 4 FEET,
OCCASIONALLY TO 5 FEET. WAVE DETAIL: EAST 4 FEET AT 7 SECONDS.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 3 FEET.
WAVE DETAIL: EAST 3 FEET AT 7 SECONDS AND SOUTH 2 FEET AT
4 SECONDS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
FRIDAY AND FRIDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS
2 TO 3 FEET. WAVE DETAIL: EAST 3 FEET AT 8 SECONDS AND SOUTH
2 FEET AT 3 SECONDS. A CHANCE OF SHOWERS AND THUNDERSTORMS.
SATURDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTHEAST 2 FEET AT 3 SECONDS AND SOUTHEAST 2 FEET AT
8 SECONDS. A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING.
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT,
THEN A CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT.
SUNDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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