436
FZUS52 KJAX 071746
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
146 PM EDT Tue Oct 7 2025

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.

AMZ400-080900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
146 PM EDT Tue Oct 7 2025

.SYNOPSIS...

Elevated seas will continue through tonight as surface high pressure
shifts offshore of the mid-Atlantic coast, keeping Small Craft
Advisory conditions in place for portions of the waters.
A strong cold front will then move across the southeast states on
Wednesday, crossing the southeast Georgia waters late on Wednesday
night and the northeast Florida waters on Thursday. Meanwhile, a
strong high pressure ridge will wedge down the southeast seaboard on
Thursday, creating a surge of strong northeast winds and building
seas. Low pressure is expected to develop east of Cape Canaveral on
Friday, with this feature then moving slowly north, likely
approaching the Carolina Coast this weekend. Small Craft Advisory
conditions will overspread our local waters on Thursday, and due to
further increasing winds, Gale Watches will likely be required later
this week.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Oct 04, 2025 at 1200 UTC...

 57 nautical miles east of Flagler Beach.
 66 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 97 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ452-454-080900-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
146 PM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds and
east 2 feet at 13 seconds. Intracoastal waters choppy. A slight
chance of showers and thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 9 seconds.
Intracoastal waters a moderate chop.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds.
Intracoastal waters a moderate chop.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
15 to 20 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 8 seconds. Intracoastal
waters choppy. A slight chance of showers after midnight.
.THURSDAY...Northeast winds 20 to 25 knots, increasing to 25 to
30 knots with gusts up to 40 knots in the afternoon. Seas 5 to
6 feet, occasionally to 8 feet, building to 6 to 8 feet,
occasionally to 10 feet in the afternoon. Wave Detail: Northeast
6 feet at 8 seconds, becoming northeast 8 feet at 6 seconds.
Intracoastal waters very rough. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.THURSDAY NIGHT...Northeast winds 25 to 30 knots with gusts up to
40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave
Detail: Northeast 11 feet at 8 seconds. Intracoastal waters very
rough. Showers likely with a chance of thunderstorms.
.FRIDAY...Northeast winds 25 to 35 knots, becoming 30 to
35 knots. Seas 9 to 12 feet, occasionally to 15 feet, building to
11 to 13 feet, occasionally to 17 feet. Intracoastal waters
extremely rough. Showers likely. A chance of thunderstorms.
.SATURDAY...North winds 30 to 35 knots, becoming 25 to 35 knots.
Seas 10 to 13 feet, occasionally to 17 feet. Intracoastal waters
extremely rough. A chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ450-080900-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
146 PM EDT Tue Oct 7 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

.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 and
east 2 feet at 13 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds.
Intracoastal waters light chop.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds.
Intracoastal waters light chop.
.WEDNESDAY NIGHT...East winds around 10 knots, becoming northeast
15 to 20 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal
waters choppy.
.THURSDAY...Northeast winds 25 to 30 knots with gusts up to
40 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to
6 to 9 feet, occasionally to 11 feet in the afternoon. Wave
Detail: Northeast 6 feet at 6 seconds, becoming northeast 8 feet
at 7 seconds. Intracoastal waters very rough. A chance of showers
and thunderstorms.
.THURSDAY NIGHT...Northeast winds around 30 knots with gusts up
to 40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave
Detail: Northeast 11 feet at 8 seconds. Intracoastal waters very
rough. Showers likely with a chance of thunderstorms.
.FRIDAY...Northeast winds 25 to 30 knots, increasing to 30 to
35 knots. Seas 9 to 12 feet, occasionally to 15 feet.
Intracoastal waters extremely rough. Showers likely and a
chance of thunderstorms.
.SATURDAY...North winds 25 to 30 knots. Seas 8 to 11 feet,
occasionally to 14 feet. Intracoastal waters very rough. A slight
chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ472-474-080900-
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-
146 PM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Seas 7 to 8 feet,
occasionally to 10 feet. Wave Detail: East 7 feet at 8 seconds
and east 2 feet at 12 seconds. A slight chance of showers and
thunderstorms late this morning.
.TONIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: East 7 feet at 9 seconds.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 9 seconds.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at
9 seconds. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...Northeast winds 20 to 25 knots, increasing to 25 to
30 knots with gusts up to 40 knots in the afternoon. Seas 5 to
6 feet, occasionally to 8 feet, building to 6 to 9 feet,
occasionally to 11 feet in the afternoon. Wave Detail: East
6 feet at 8 seconds, becoming northeast 8 feet at 7 seconds. A
chance of showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.THURSDAY NIGHT...Northeast winds 25 to 30 knots with gusts up to
40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave
Detail: Northeast 11 feet at 8 seconds. Showers with a chance of
thunderstorms.
.FRIDAY...Northeast winds 25 to 30 knots. Seas 9 to 12 feet,
occasionally to 15 feet, building to 11 to 13 feet, occasionally
to 17 feet. A chance of thunderstorms in the morning. Showers.
Thunderstorms likely in the afternoon, then a chance of
thunderstorms in the evening. A chance of showers with a slight
chance of thunderstorms after midnight.
.SATURDAY...North winds 25 to 35 knots. Seas 11 to 14 feet,
occasionally to 18 feet, building to 12 to 14 feet, occasionally
to 18 feet. A chance of thunderstorms in the morning. A chance of
showers and a slight chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ470-080900-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
146 PM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...

.REST OF TODAY...East winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 8 seconds and
east 2 feet at 12 seconds.
.TONIGHT...East winds 10 to 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 9 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds.
.WEDNESDAY NIGHT...Northeast winds around 10 knots, increasing to
15 to 20 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 after midnight.
.THURSDAY...Northeast winds 25 to 30 knots with gusts up to
40 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to
7 to 10 feet, occasionally to 13 feet in the afternoon. Wave
Detail: Northeast 7 feet at 7 seconds, becoming northeast 10 feet
at 7 seconds. A chance of thunderstorms. A chance of showers in
the morning, then showers likely in the afternoon.
.THURSDAY NIGHT...Northeast winds around 30 knots with gusts up
to 40 knots. Seas 9 to 12 feet, occasionally to 15 feet, building
to 11 to 12 feet, occasionally to 15 feet after midnight. Wave
Detail: Northeast 11 feet at 8 seconds, becoming northeast
12 feet at 9 seconds. Showers with a chance of thunderstorms.
.FRIDAY...Northeast winds around 30 knots. Seas 11 to 14 feet,
occasionally to 18 feet. Showers with a chance of thunderstorms.
.SATURDAY...North winds 25 to 30 knots. Seas 11 to 14 feet, occasionally
to 18 feet. A chance of showers and slight chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$