457 
FZUS52 KJAX 081702
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
102 PM EDT Wed Oct 8 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.

AMZ400-090815-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
102 PM EDT Wed Oct 8 2025

.SYNOPSIS...

A strong cold front will enter the southeastern states tonight, with
this boundary crossing the Georgia waters early Thursday morning and
the northeast Florida waters by late Thursday morning. Strong high 
pressure building over the Great Lakes in the wake of this front on 
Thursday will move eastward towards New England by Friday morning, 
with this feature wedging down the southeastern seaboard. Northeast 
winds will quickly strengthen on Thursday as a coastal trough 
sharpens over our near shore waters, with showers and embedded 
thunderstorms increasing in coverage throughout our local waters 
through Friday. Small Craft Advisory conditions will develop 
Thursday morning, and a Gale Warning has been posted from Thursday 
afternoon through Saturday night. Low pressure will then develop 
along the frontal boundary over the Gulf Stream waters adjacent to 
our region on Friday, with this feature gradually strengthening as 
it moves northward towards the Carolinas this weekend. Strong north-
northeasterly winds and building, very rough surf will create 
dangerous conditions throughout our local waters from Thursday night
through early Sunday. Northerly winds will gradually subside late 
this weekend into early next week, with elevated seas also likely 
slow to subside across our local waters.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Oct 07, 2025 at 1200 UTC...

 50 nautical miles east of Flagler Beach.
 59 nautical miles east of Saint Augustine Beach.
 70 nautical miles east of Jacksonville Beach.
 86 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ452-454-090815-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
102 PM EDT Wed Oct 8 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT
THROUGH THURSDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.REST OF TODAY...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. A slight chance
of showers. 
.TONIGHT...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 with gusts up to
35 knots, increasing to 25 to 30 knots with gusts up to 45 knots
in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet,
building to 6 to 9 feet, occasionally to 11 feet in the
afternoon. Wave Detail: Northeast 6 feet at 8 seconds, becoming
northeast 9 feet at 7 seconds. Intracoastal waters very rough. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon. 
.THURSDAY NIGHT...Northeast winds 30 to 35 knots, diminishing to
25 to 30 knots after midnight. Seas 8 to 11 feet, occasionally to
14 feet. Wave Detail: Northeast 11 feet at 7 seconds.
Intracoastal waters extremely rough. Showers with a chance of
thunderstorms. 
.FRIDAY AND FRIDAY NIGHT...Northeast winds 25 to 35 knots with
gusts up to 45 knots. Seas 9 to 13 feet, occasionally to 17 feet.
Wave Detail: Northeast 13 feet at 9 seconds. Intracoastal waters
extremely rough. Showers likely with a chance of thunderstorms. 
.SATURDAY...North winds 30 to 35 knots, becoming 25 to 35 knots.
Seas 9 to 13 feet, occasionally to 17 feet. Wave Detail:
Northeast 13 feet at 9 seconds and north 5 feet at 7 seconds.
Intracoastal waters extremely rough. A chance of showers with a
slight chance of thunderstorms through the day, then a slight
chance of showers in the evening. 
.SUNDAY...North winds 25 to 30 knots, diminishing to around
15 knots. Seas 8 to 11 feet, occasionally to 14 feet, subsiding
to 5 to 7 feet, occasionally to 9 feet. Intracoastal waters very
rough. 

Winds and waves higher in and near thunderstorms.

$$

AMZ450-090815-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
102 PM EDT Wed Oct 8 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT
THROUGH THURSDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.REST OF TODAY...Northeast winds around 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
8 seconds. Intracoastal waters light chop. A slight chance of
showers this afternoon. 
.TONIGHT...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. A slight chance of showers in the evening, then a
chance of showers after midnight. 
.THURSDAY...Northeast winds 25 to 30 knots with gusts up to
45 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 9 feet
at 7 seconds. Intracoastal waters very rough. 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 45 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave
Detail: Northeast 11 feet at 9 seconds. Intracoastal waters very
rough. Showers likely with a chance of thunderstorms. 
.FRIDAY AND FRIDAY NIGHT...Northeast winds 25 to 35 knots with
gusts up to 45 knots. Seas 9 to 12 feet, occasionally to 15 feet.
Wave Detail: Northeast 11 feet at 9 seconds. Intracoastal waters
extremely rough. Showers likely with a chance of thunderstorms. 
.SATURDAY...North winds 25 to 30 knots. Seas 8 to 11 feet,
occasionally to 14 feet. Wave Detail: Northeast 11 feet at
9 seconds and north 4 feet at 6 seconds. Intracoastal waters very
rough. A chance of showers with a slight chance of thunderstorms
in the morning, then a slight chance of showers through the
night. 
.SUNDAY...North winds 20 to 25 knots, becoming northwest 10 to
15 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to
4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. 

Winds and waves higher in and near thunderstorms.

$$

AMZ472-474-090815-
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-
102 PM EDT Wed Oct 8 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THURSDAY
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at
8 seconds. A slight chance of showers late this morning. 
.TONIGHT...Northeast winds around 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 8 seconds. A
chance of showers after midnight. 
.THURSDAY...Northeast winds 20 to 25 knots with gusts up to
35 knots, increasing to 25 to 30 knots with gusts up to 45 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: Northeast 6 feet at 8 seconds, becoming
northeast 9 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
45 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 AND FRIDAY NIGHT...Northeast winds 25 to 30 knots with
gusts up to 45 knots. Seas 9 to 13 feet, occasionally to 17 feet.
Wave Detail: Northeast 13 feet at 9 seconds. Showers with a
chance of thunderstorms. 
.SATURDAY...North winds 25 to 35 knots. Seas 11 to 13 feet,
occasionally to 17 feet. Wave Detail: Northeast 13 feet at
9 seconds and north 7 feet at 8 seconds. A chance of
thunderstorms in the morning. A chance of showers. A slight
chance of thunderstorms in the afternoon. A slight chance of
showers after midnight. 
.SUNDAY...North winds 25 to 30 knots, diminishing to 15 to
20 knots. Seas 9 to 12 feet, occasionally to 15 feet, subsiding
to 7 to 8 feet, occasionally to 10 feet. A slight chance of
showers through the day. 

Winds and seas higher in and near thunderstorms.

$$

AMZ470-090815-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
102 PM EDT Wed Oct 8 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT
THROUGH THURSDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...
...GALE WARNING IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.REST OF TODAY...Northeast winds around 10 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at
8 seconds. A slight chance of showers this afternoon. 
.TONIGHT...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. A slight chance of
showers in the evening, then a chance of showers 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 25 to 30 knots with gusts up to
45 knots. Seas 10 to 12 feet, occasionally to 15 feet. Wave
Detail: Northeast 12 feet at 8 seconds. Showers. Thunderstorms
likely, mainly in the evening. 
.FRIDAY AND FRIDAY NIGHT...Northeast winds 25 to 30 knots with
gusts up to 45 knots. Seas 11 to 13 feet, occasionally to
17 feet. Wave Detail: Northeast 13 feet at 9 seconds. Showers
with a chance of thunderstorms. 
.SATURDAY...North winds 25 to 30 knots. Seas 10 to 13 feet,
occasionally to 17 feet. Wave Detail: Northeast 13 feet at
9 seconds and north 5 feet at 7 seconds. A chance of showers with
a slight chance of thunderstorms through the day, then a slight
chance of showers through the night. 
.SUNDAY...North winds 20 to 25 knots, diminishing to 15 to
20 knots. Seas 9 to 11 feet, occasionally to 14 feet, subsiding
to 6 to 7 feet, occasionally to 9 feet. A slight chance of
showers in the morning. 

Winds and seas higher in and near thunderstorms.

$$