606
FZUS52 KJAX 241235
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
835 AM EDT Sun Aug 24 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.

AMZ400-250345-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
835 AM EDT Sun Aug 24 2025

.SYNOPSIS...

Long period swells will continue to impact our local waters,
keeping combined seas elevated through tonight. Areas near inlets
may be choppy from this swell activity today. Meanwhile, a slow
moving cold front positioned across Interstate 10 this morning
will slowly drift southward through tonight. Showers and
thunderstorms will impact our local waters this afternoon through
early evening. The frontal boundary will then push south of our
local waters on Monday evening, stalling across the Florida
peninsula by midweek, resulting in a decreasing coverage of
showers and thunderstorms for our area on Tuesday and Wednesday.
Breezy northeasterly winds will may then develop by Wednesday and
Thursday as high pressure builds over the Ohio Valley and coastal
troughing develops across the northeast Florida waters, where
chances for showers and thunderstorms will increase later this
week.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 23, 2025 at 1200 UTC...

 57 nautical miles east of Flagler Beach.
 69 nautical miles east southeast of Saint Augustine Beach.
 75 nautical miles east of Jacksonville Beach.
 77 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-250345-
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-
835 AM EDT Sun Aug 24 2025

.REST OF TODAY...West winds around 10 knots, becoming northeast
this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 3 feet at 13 seconds and east 2 feet at 6
seconds. Intracoastal waters a light chop. A chance of showers
and thunderstorms this morning, then showers and thunderstorms
likely this afternoon.
.TONIGHT...Southwest winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 3 feet at 14
seconds and east 2 feet at 6 seconds. Intracoastal waters mostly
smooth. A chance of showers and thunderstorms, mainly in the
evening.
.MONDAY...West winds 5 to 10 knots, becoming southeast around 10
knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Northeast 3 feet at 14 seconds and southeast 2 feet
at 5 seconds. Intracoastal waters becoming a light chop. A chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
northwest after midnight. Seas 2 to 3 feet. Wave Detail:
Northeast 3 feet at 12 seconds. Intracoastal waters mostly smooth.
A chance of showers and thunderstorms in the evening, then a
slight chance of showers after midnight.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east northeast
around 10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Northeast 2 feet at 12 seconds. Intracoastal waters becoming a
light chop. A slight chance of showers and thunderstorms in the
afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming north
after midnight. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet
at 12 seconds. Intracoastal waters mostly smooth.
.WEDNESDAY THROUGH THURSDAY...Northeast winds around 15 knots.
Seas 3 to 4 feet. Intracoastal waters a moderate chop. A chance
of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-250345-
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-
835 AM EDT Sun Aug 24 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...West winds 10 to 15 knots, becoming northwest
5 to 10 knots this afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Northeast 4 feet at 13 seconds and southwest
3 feet at 5 seconds. Showers and thunderstorms likely.
.TONIGHT...West winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 7 feet. Wave Detail: Northeast 4 feet at 14
seconds and south 3 feet at 5 seconds. A chance of showers and
thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 4 feet at 13 seconds and south 3 feet at 5 seconds.
Showers and thunderstorms likely in the morning, then a chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
northwest after midnight. Seas 3 to 4 feet, occasionally to 5
feet. Wave Detail: Northeast 3 feet at 12 seconds and southeast 2
feet at 5 seconds. A chance of showers and thunderstorms, mainly
in the evening.
.TUESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 3 feet at 12 seconds and south 2 feet at
4 seconds. A chance of showers and thunderstorms.
.TUESDAY NIGHT...East winds around 5 knots, becoming north after
midnight. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 12
seconds. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY THROUGH THURSDAY...Northeast winds around 15 knots.
Seas 3 to 4 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$