737
FZUS52 KJAX 311133
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
733 AM 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.

AMZ400-010245-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
733 AM EDT Sun Aug 31 2025

.SYNOPSIS...

High pressure to the north of the region will wedge down the
southeastern seaboard, sending a surge of northeasterly winds and
building seas across our local waters from north to south today.
Small Craft Advisory conditions will overspread the waters reaching
the waters south of St. Augustine by late this afternoon. Waves of
showers and embedded thunderstorms will impact our local waters
through midweek. Northeasterly winds will begin to gradually weaken
by 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.


$$

AMZ450-470-010245-
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-
733 AM EDT Sun Aug 31 2025

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

.TODAY...Northeast winds increasing to 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 chance
of thunderstorms this morning, then a chance of showers with a
slight chance of thunderstorms 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.
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. 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 7 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...Northeast winds around 10 knots, becoming east. 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. A
chance of thunderstorms .
.THURSDAY...Northeast winds 5 to 10 knots, becoming south. Seas
2 to 3 feet. Intracoastal waters light chop. A chance of showers
with a slight chance of thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ452-472-010245-
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-
733 AM EDT Sun Aug 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
MONDAY EVENING...

.TODAY...Northeast winds 15 to 20 knots, 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.
.TONIGHT...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. Showers likely with a
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 thunderstorms.
Showers.
.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 thunderstorms.
A chance of showers in the evening, then showers likely after
midnight.
.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 thunderstorms.
A chance of showers in the morning, then showers likely in the
afternoon.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 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...East winds around 10 knots, becoming southeast. Seas
3 to 4 feet, occasionally to 5 feet. 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 around 10 knots, becoming southwest.
Seas 2 to 3 feet. Intracoastal waters light chop. A chance of
showers.

Winds and waves higher in and near thunderstorms.

$$

AMZ454-474-010245-
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-
733 AM EDT Sun Aug 31 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH MONDAY EVENING...

.TODAY...North winds 15 knots, becoming northeast 20 knots late
this afternoon. Seas 2 to 3 feet, building to 3 to 5 feet,
occasionally to 6 feet this afternoon. Wave Detail:
Northeast 3 feet at 7 seconds and north 2 feet at 4 seconds,
becoming northeast 5 feet at 6 seconds. Intracoastal waters
choppy. Showers likely with a chance of thunderstorms.
.TONIGHT...Northeast winds around 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at 7
seconds. Intracoastal waters choppy. Showers likely with a chance
of thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.MONDAY...Northeast winds around 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
8 seconds. Intracoastal waters choppy. Showers with a chance of
thunderstorms.
.MONDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Northeast 7 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 4 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...Northeast winds around 10 knots, becoming south.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 9 seconds. Intracoastal waters light chop. Showers
likely with a chance of thunderstorms, then a chance of showers
with a slight chance of thunderstorms after midnight.
.THURSDAY...South winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters light chop. A chance
of showers.

Winds and waves higher in and near thunderstorms.

$$