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FZUS52 KJAX 030631
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
231 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.

AMZ400-032145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
231 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.


$$

AMZ450-452-454-032145-
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-
231 AM EDT Wed Sep 3 2025

.TODAY...Northeast winds around 15 knots. Seas 4 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 northeast winds around 10 knots. Seas 2 to 4
feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 8
seconds. Intracoastal waters a light chop.
.THURSDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. Intracoastal waters a light
chop. A slight chance of showers and 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
mostly smooth. A slight chance of showers.
.FRIDAY...East northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 3 seconds and east 2 feet at 8
seconds. Intracoastal waters a light chop. A chance of showers
with a slight chance of thunderstorms.
.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 mostly smooth. A slight chance of
showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters mostly smooth. A slight chance of showers
and thunderstorms.
.SATURDAY NIGHT AND SUNDAY...Southeast winds 5 to 10 knots,
becoming east around 10 knots during the afternoon. Seas around 2
feet. Intracoastal waters becoming a light chop. A slight chance
of showers and thunderstorms, mainly during the afternoon and
evening.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-032145-
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-
231 AM EDT Wed Sep 3 2025

.TODAY...Northeast winds around 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.
.TONIGHT...East northeast winds around 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 around 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3
feet. Wave Detail: East 3 feet at 8 seconds. A chance of showers
with a slight chance of thunderstorms.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 8 seconds. A chance of showers with a slight
chance of thunderstorms.
.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. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.SATURDAY NIGHT AND SUNDAY...Southeast winds 5 to 10 knots,
becoming northeast during the afternoon. Seas around 2 feet. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$