635
FZUS52 KJAX 030933
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
532 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.

AMZ400-040000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
532 AM EDT Wed Sep 3 2025

.SYNOPSIS...

Low pressure positioned 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
northeasterly winds will continue today as seas continue to
gradually subside, with scattered showers possible for the waters
south of St. Augustine. 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.


$$

AMZ450-452-454-040000-
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-
532 AM EDT Wed Sep 3 2025

.TODAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at
8 seconds. Intracoastal waters a moderate chop. A slight chance
of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 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 east 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.

$$

AMZ470-472-474-040000-
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-
532 AM EDT Wed Sep 3 2025

.TODAY...Northeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. A chance of showers and thunderstorms, mainly this
morning.
.TONIGHT...East 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 8 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.

$$