474
FZUS52 KJAX 311656
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1256 PM EDT Sun Aug 31 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.

AMZ400-010800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1256 PM EDT Sun Aug 31 2025

.SYNOPSIS...

High pressure to the north of the region will wedge down the
southeastern seaboard through tonight, continuing a surge of
northeasterly winds and building seas across our local waters.
Small Craft Advisory conditions will continue through early
Tuesday. Waves of showers and embedded thunderstorms will impact
our local waters through midweek. Northeasterly winds will begin
to gradually weaken late Tuesday and Wednesday, allowing for seas
to gradually subside. Coverage of showers and thunderstorms will
then decrease later this week as prevailing winds shift to
westerly ahead of a series of approaching cold fronts.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 28, 2025 at 1200 UTC...

 36 nautical miles east of Flagler Beach.
 46 nautical miles east of Saint Augustine Beach.
 56 nautical miles east of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-470-010800-
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-
1256 PM EDT Sun Aug 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.REST OF TODAY...Northeast winds 20 to 25 knots. Gusts up to
35 knots this afternoon. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Northeast 7 feet at 6 seconds. Intracoastal
waters rough. A chance of showers with a slight chance of
thunderstorms.
.TONIGHT...Northeast winds 20 to 25 knots. Gusts up to 35 knots
in the evening. Seas 6 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast 7 feet at 7 seconds. Intracoastal waters rough.
A chance of showers with a slight chance of thunderstorms.
.MONDAY...Northeast winds 20 to 25 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
7 seconds. Intracoastal waters rough. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
8 seconds. Intracoastal waters choppy. A chance of showers and
thunderstorms.
.TUESDAY AND TUESDAY NIGHT...Northeast winds 15 to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
5 feet at 8 seconds. Intracoastal waters choppy. A chance of
showers and thunderstorms.
.WEDNESDAY THROUGH THURSDAY...South winds 5 to 10 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
9 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ452-472-010800-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
1256 PM EDT Sun Aug 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.REST OF TODAY...Northeast winds increasing to 20 to 25 knots
this afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: Northeast 6 feet at 6 seconds. Intracoastal waters rough.
Showers likely with a chance of thunderstorms late this morning,
then showers with thunderstorms likely this afternoon.
.TONIGHT...Northeast winds 20 to 25 knots. Gusts up to 35 knots
in the evening. Seas 6 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast 7 feet at 7 seconds. Intracoastal waters rough.
Showers likely with a chance of thunderstorms.
.MONDAY...Northeast winds 20 to 25 knots. Gusts up to 35 knots in
the afternoon. Seas 6 to 7 feet, occasionally to 9 feet. Wave
Detail: Northeast 7 feet at 7 seconds. Intracoastal waters rough.
A chance of thunderstorms. Showers likely, mainly in the morning.
.MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
8 seconds. Intracoastal waters choppy. A chance of showers. A
chance of thunderstorms, mainly in the evening.
.TUESDAY...Northeast winds 15 to 20 knots. Seas around 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters choppy. A chance of showers with a
slight chance of thunderstorms in the morning, then showers
likely with a chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters a moderate chop. A chance of
showers and thunderstorms.
.WEDNESDAY THROUGH THURSDAY...South winds 5 to 10 knots. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters light
chop. A chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ454-474-010800-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
1256 PM EDT Sun Aug 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.REST OF TODAY...North winds increasing to 20 knots. Seas 3 to 5
feet, occasionally to 6 feet. Wave Detail: North 5 feet at 5
seconds. Intracoastal waters choppy. Showers likely with a chance
of thunderstorms.
.TONIGHT...Northeast winds around 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 6 feet at
7 seconds. Intracoastal waters choppy. Showers likely with a
chance of thunderstorms.
.MONDAY...Northeast winds around 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 6 feet at 8
seconds. Intracoastal waters choppy. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.MONDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 5 to 6 feet, occasionally to
8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Intracoastal
waters choppy. Showers likely with a chance of thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters a moderate chop. Showers likely
with a chance of thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
8 seconds. Intracoastal waters light chop. A chance of showers in
the morning. A chance of thunderstorms. Showers likely in the
afternoon, then a chance of showers through the night. A slight
chance of thunderstorms after midnight.
.THURSDAY...Northeast winds 5 to 10 knots, becoming south. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters light
chop. A chance of showers. A chance of thunderstorms .

Winds and waves higher in and near thunderstorms.

$$