043
FZUS52 KJAX 280552
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
152 AM EDT Thu Aug 28 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.

AMZ400-282100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
152 AM EDT Thu Aug 28 2025

.SYNOPSIS...

The stalled frontal boundary will continue to slowly rise northward
as Atlantic ridging builds into south Florida. A weak low will form
today as northeast to easterly flow north of the front creates
convergent showers and isolated thunderstorms. High pressure to the
north will reform more to the northeast as the front continues to
lift back northward. The front will linger across the local waters
Friday and into the weekend with a return of elevated shower and
thunderstorm chances through the upcoming weekend. Another cold
front will move down the coast early next week bringing elevated
northeasterly winds and seas.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 26, 2025 at 1200 UTC...

 53 nautical miles east northeast of Flagler Beach.
 53 nautical miles east of Saint Augustine Beach.
 61 nautical miles east of Jacksonville Beach.
 75 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-282100-
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-
152 AM EDT Thu Aug 28 2025

.TODAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds. Intracoastal waters light
chop. A chance of showers. A slight chance of thunderstorms this
morning, then a chance of thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds. Intracoastal waters light
chop. A chance of showers and thunderstorms, mainly in the
evening.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 6 seconds. Intracoastal waters a
moderate chop. A chance of showers and thunderstorms.
.FRIDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 5 seconds. Intracoastal waters light
chop. A chance of showers and thunderstorms.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds. Intracoastal waters a moderate
chop. Showers likely. A chance of thunderstorms in the morning,
then thunderstorms likely in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 5 seconds. Intracoastal waters a
moderate chop. Showers likely with a chance of thunderstorms.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters choppy. A chance of
thunderstorms in the morning. Showers likely. Thunderstorms
likely in the afternoon, then a chance of thunderstorms in the
evening. A chance of showers with a slight chance of
thunderstorms after midnight.
.MONDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Intracoastal waters choppy. A slight
chance of thunderstorms in the morning. Showers likely. A chance
of thunderstorms through the night, then a chance of showers with
a slight chance of thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-282100-
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-
152 AM EDT Thu Aug 28 2025

.TODAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 6 seconds and southeast 2 feet at
9 seconds. A chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 6 seconds. A chance of showers and
thunderstorms.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 6 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 7 seconds. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 7 seconds. Showers likely with a chance of
thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 5 seconds. Showers likely with a
chance of thunderstorms.
.SUNDAY THROUGH MONDAY...Northeast winds 15 to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet. Showers with a chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$