527
FZUS52 KJAX 031213 AAA
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia...UPDATED
National Weather Service Jacksonville FL
813 AM EDT Wed Sep 3 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.

AMZ400-040315-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
813 AM EDT Wed Sep 3 2025

.SYNOPSIS...

Low pressure positioned well east of the Gulf Stream waters adjacent
to the southeastern seaboard will weaken as it moves further offshore
today and tonight. Meanwhile, high pressure along the U.S. eastern
seaboard today will weaken as it pushes offshore tonight. Breezy
northeast winds will continue today keeping seas elevated most of
today. Meanwhile, a frontal boundary currently stalled near the
Florida Keys will lift slowly northward through the Florida
peninsula on Thursday and Friday, with another weak low pressure
center developing along this front east of Cape Canaveral. This
feature will likely maintain generally light onshore winds across
our local waters through the weekend. A frontal boundary will then
approach our region from the northwest on Sunday, with this front
then stalling across our local waters early next week, bringing
increasing chances for showers and thunderstorms.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 30, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 92 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-040315-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
813 AM EDT Wed Sep 3 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

.REST OF TODAY...Northeast winds around 15 knots. Seas 4 to 6 feet,
occasionally to 7 feet. Wave Detail: Northeast 5 feet at 8 seconds.
Intracoastal waters a moderate chop. A slight chance of showers.
A slight chance of thunderstorms this afternoon.
.TONIGHT...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.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. Intracoastal waters light
chop. A slight chance of showers. A slight chance of
thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal
waters light chop. A slight chance of showers after midnight.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 3 seconds and northeast 2 feet at
8 seconds. Intracoastal waters light chop. A chance of showers in
the morning, then a slight chance of showers and thunderstorms in
the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 3 seconds and east 2 feet at
8 seconds. Intracoastal waters light chop. A slight chance of
showers.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast.
Seas around 2 feet. Intracoastal waters light chop. A slight
chance of showers. A slight chance of thunderstorms through the
night.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters light chop. A slight chance of showers. A
slight chance of thunderstorms. A chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-040315-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
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-
813 AM EDT Wed Sep 3 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

.REST OF TODAY...Northeast winds around 15 knots. Seas 4 to 6 feet,
occasionally to 7 feet. Wave Detail: Northeast 5 feet at 8
seconds. A chance of showers this morning, then a slight chance of
showers and thunderstorms this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
8 seconds. A slight chance of showers and thunderstorms.
.THURSDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 8 seconds. A slight chance of
thunderstorms. A slight chance of showers in the evening, then a
chance of showers after midnight.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 9 seconds. A slight chance of
thunderstorms. A chance of showers, mainly in the morning.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 8 seconds. A slight chance of showers and
thunderstorms.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast.
Seas around 2 feet. A slight chance of thunderstorms. A chance of
showers through the day, then a slight chance of showers through
the night.
.SUNDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers. A slight chance of thunderstorms, then a
chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$