121
FZUS52 KJAX 180927
CWFJAX
COASTAL WATERS FORECAST FOR NORTHEAST FLORIDA/SOUTHEAST GEORGIA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
527 AM EDT SUN OCT 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.
AMZ400-190030-
SYNOPSIS FOR ALTAMAHA SOUND GA TO FLAGLER BEACH FL OUT TO 60 NM-
527 AM EDT SUN OCT 18 2026
SYNOPSIS
STRONG HIGH PRESSURE WILL BUILD TO THE NORTH THROUGH TONIGHT WITH
GALE CONDITIONS OVER THE WATERS. AN AREA OF LOW PRESSURE IS EXPECTED
TO DEVELOP TO THE NORTHEAST OF THE REGION TODAY KEEPING A TIGHT
PRESSURE GRADIENT OVER THE REGION AND CONTINUING STRONG ONSHORE
WINDS AND VERY DANGEROUS SEAS. THE LOW WILL REMAIN NORTHEAST OF THE
AREA EAST OF THE CAROLINA COAST AS HIGH PRESSURE RIDGING WEAKENS TO
THE NORTH WITH SMALL CRAFT ADVISORIES ARE LIKELY TO PERSIST INTO
NEXT WEEK.
GULF STREAM
THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF
OCT 17, 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.
80 NAUTICAL MILES EAST SOUTHEAST OF ST SIMONS ISLAND.
THIS DATA DERIVED FROM NCEP GLOBAL RTOFS MODEL.
AMZ450-470-190030-
COASTAL WATERS FROM ALTAMAHA SOUND TO FERNANDINA BEACH FL OUT
20 NM-
WATERS FROM ALTAMAHA SOUND GA TO FERNANDINA BEACH FL FROM 20 TO
60 NM-
527 AM EDT SUN OCT 18 2026
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
TODAY
NORTHEAST WINDS 25 TO 30 KNOTS. GUSTS 35 KNOTS. SEAS 8
TO 13 FEET, OCCASIONALLY TO 17 FEET. WAVE DETAIL: NORTHEAST 12
FEET AT 9 SECONDS. INTRACOASTAL WATERS VERY ROUGH.
TONIGHT
NORTHEAST WINDS 25 TO 30 KNOTS WITH GUSTS UP TO 40 KNOTS.
SEAS 10 TO 14 FEET, OCCASIONALLY TO 18 FEET. WAVE DETAIL:
NORTHEAST 13 FEET AT 9 SECONDS. INTRACOASTAL WATERS VERY ROUGH.
MONDAY
NORTH WINDS 20 TO 25 KNOTS. SEAS 9 TO 13 FEET,
OCCASIONALLY TO 17 FEET, SUBSIDING TO 8 TO 11 FEET, OCCASIONALLY
TO 14 FEET IN THE AFTERNOON. WAVE DETAIL: NORTHEAST 12 FEET AT
13 SECONDS, BECOMING NORTHEAST 11 FEET AT 13 SECONDS.
INTRACOASTAL WATERS ROUGH.
MONDAY NIGHT
NORTH WINDS 15 TO 20 KNOTS. SEAS 8 TO 11 FEET,
OCCASIONALLY TO 14 FEET. WAVE DETAIL: NORTHEAST 11 FEET AT
14 SECONDS. INTRACOASTAL WATERS CHOPPY.
TUESDAY
NORTH WINDS 15 TO 20 KNOTS. SEAS 6 TO 9 FEET,
OCCASIONALLY TO 11 FEET. WAVE DETAIL: NORTHEAST 9 FEET AT
13 SECONDS. INTRACOASTAL WATERS CHOPPY.
TUESDAY NIGHT
NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 5 TO
8 FEET, OCCASIONALLY TO 10 FEET. WAVE DETAIL: NORTHEAST 8 FEET AT
11 SECONDS. INTRACOASTAL WATERS CHOPPY.
WEDNESDAY THROUGH THURSDAY
NORTHEAST WINDS 15 TO 20 KNOTS.
SEAS 5 TO 7 FEET, OCCASIONALLY TO 9 FEET. INTRACOASTAL WATERS
CHOPPY.
AMZ452-454-472-474-190030-
COASTAL WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL OUT
20 NM-
COASTAL WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL OUT 20 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-
527 AM EDT SUN OCT 18 2026
..GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT
TODAY
NORTHEAST WINDS 25 TO 30 KNOTS. GUSTS NEAR 40 KNOTS. SEAS
9 TO 13 FEET, OCCASIONALLY TO 17 FEET. WAVE DETAIL: NORTHEAST 13
FEET AT 9 SECONDS. INTRACOASTAL WATERS VERY ROUGH. A SLIGHT CHANCE
OF SHOWERS THIS MORNING, THEN A CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NORTHEAST WINDS 25 TO 30 KNOTS. GUSTS NEAR 35 KNOTS. SEAS
10 TO 14 FEET, OCCASIONALLY TO 18 FEET. WAVE DETAIL: NORTHEAST 14
FEET AT 10 SECONDS. INTRACOASTAL WATERS VERY ROUGH. A SLIGHT
CHANCE OF SHOWERS IN THE EVENING.
MONDAY
NORTH WINDS 25 TO 30 KNOTS. SEAS 10 TO 14 FEET, OCCASIONALLY
TO 18 FEET. WAVE DETAIL: NORTHEAST 14 FEET AT 12 SECONDS.
INTRACOASTAL WATERS VERY ROUGH.
MONDAY NIGHT
NORTH WINDS 20 TO 25 KNOTS, DIMINISHING TO 15 TO
20 KNOTS AFTER MIDNIGHT. SEAS 9 TO 12 FEET, OCCASIONALLY TO
15 FEET. WAVE DETAIL: NORTHEAST 12 FEET AT 13 SECONDS.
INTRACOASTAL WATERS ROUGH.
TUESDAY AND TUESDAY NIGHT
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS
7 TO 10 FEET, OCCASIONALLY TO 13 FEET. WAVE DETAIL: NORTHEAST
10 FEET AT 13 SECONDS. INTRACOASTAL WATERS ROUGH.
WEDNESDAY THROUGH THURSDAY
NORTHEAST WINDS 20 TO 25 KNOTS.
SEAS 6 TO 8 FEET, OCCASIONALLY TO 10 FEET. WAVE DETAIL: NORTHEAST
8 FEET AT 11 SECONDS. INTRACOASTAL WATERS ROUGH.
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