193
FZUS52 KJAX 301732
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
132 PM EDT Sat Aug 30 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.

AMZ400-310845-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
132 PM EDT Sat Aug 30 2025

.SYNOPSIS...

A stationary front will linger across the northeast Florida waters
this weekend as strong high pressure over the Great Lakes begins to
wedge down the southeastern seaboard, sending a surge of
northeasterly winds and building seas across our local waters from
north to south on Sunday. Waves of showers and embedded
thunderstorms will impact our local waters this weekend, with
stronger storms capable of producing excessive lightning, strong
winds, and waterspouts. Northeasterly winds will likely peak at
Small Craft Advisory levels on Monday and will then gradually weaken
by late Tuesday and Wednesday. Widespread showers and embedded
thunderstorms will continue through midweek, with less coverage
expected ahead of an approaching cold front later in the week.
Prevailing winds will shift to offshore ahead of this approaching
cold front, allowing seas to gradually subside.


.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.


$$

AMZ450-470-310845-
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-
132 PM EDT Sat Aug 30 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT
THROUGH SUNDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY EVENING...

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

$$

AMZ452-472-310845-
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-
132 PM EDT Sat Aug 30 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY EVENING...

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at
8 seconds. Intracoastal waters a moderate chop. A chance of
showers with a slight chance of thunderstorms late this morning,
then showers likely with a chance of thunderstorms this
afternoon.
.TONIGHT...North winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds and east 2 feet at
8 seconds. Intracoastal waters a moderate chop. A chance of
showers with a slight chance of thunderstorms.
.SUNDAY...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: North 4 feet at 5 seconds and east 2 feet at
8 seconds. Intracoastal waters choppy. A chance of thunderstorms.
A chance of showers in the morning, then showers likely in the
afternoon.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
7 seconds. Intracoastal waters choppy. Showers with a chance of
thunderstorms.
.MONDAY AND MONDAY NIGHT...Northeast winds 20 to 25 knots. Seas
5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
6 feet at 7 seconds. Intracoastal waters rough. Showers with a
chance of thunderstorms.
.TUESDAY THROUGH WEDNESDAY...Southeast winds 15 to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
5 feet at 8 seconds and northeast 3 feet at 5 seconds.
Intracoastal waters choppy. Showers likely with a chance of
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ454-474-310845-
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-
132 PM EDT Sat Aug 30 2025

.REST OF TODAY...South winds around 10 knots, becoming north this
afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
5 seconds. Intracoastal waters light chop. A chance of showers
with a slight chance of thunderstorms late this morning, then
showers likely with a chance of thunderstorms this afternoon.
.TONIGHT...Northwest winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 2 feet at 4 seconds and northeast 2 feet
at 5 seconds. Intracoastal waters light chop. Showers likely with
a chance of thunderstorms in the evening, then a chance of
showers with a slight chance of thunderstorms after midnight.
.SUNDAY...North winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds
and east 2 feet at 8 seconds. Intracoastal waters a moderate
chop. A chance of thunderstorms. A chance of showers in the
morning, then showers likely in the afternoon.
.SUNDAY NIGHT...Northeast winds around 15 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at
7 seconds. Intracoastal waters a moderate chop. Showers with a
chance of thunderstorms.
.MONDAY AND MONDAY NIGHT...Northeast winds 15 to 20 knots. Seas
4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast
6 feet at 7 seconds. Intracoastal waters choppy. Showers with a
chance of thunderstorms.
.TUESDAY THROUGH WEDNESDAY...South 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.

Winds and waves higher in and near thunderstorms.

$$