399
FZUS52 KJAX 081753
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
153 PM EDT Tue Sep 8 2026

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.

AMZ400-090900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
153 PM EDT Tue Sep 8 2026

.SYNOPSIS...

A coastal trough developing today will persists through this evening
into Wednesday morning with waves of gusty showers and isolated
thunderstorms. Elevated winds and seas will bring Exercise caution
conditions to the waters north of St Augustine through this late
this evening. Winds will become easterly Wednesday morning and
gradually lessen as the trough begins to weaken by late Wednesday
Night as high pressure builds northeast of the region. The high will
then extend across the Florida peninsula Thursday with southerly
winds and a return of southwest winds Friday into the weekend with
the afternoon east coast sea breeze.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 08, 2026 at 0000 UTC...

 54 nautical miles east of Flagler Beach.
 58 nautical miles east of Saint Augustine Beach.
 70 nautical miles east southeast of Jacksonville Beach.
 76 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-470-090900-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
153 PM EDT Tue Sep 8 2026

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

.REST OF TODAY...Northeast winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds. Intracoastal waters choppy. A chance of showers. A
chance of thunderstorms this afternoon.
.TONIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Intracoastal
waters choppy. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds.
Intracoastal waters a moderate chop. A slight chance of
thunderstorms. A chance of showers, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 8 seconds. Intracoastal
waters a moderate chop. A slight chance of showers and
thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds.
Intracoastal waters light chop. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at
7 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A slight chance of thunderstorms
in the morning. A chance of showers. A chance of thunderstorms.
Showers likely after midnight.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ472-090900-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
153 PM EDT Tue Sep 8 2026

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

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7
seconds. A slight chance of showers and thunderstorms late this
morning, then a chance of showers and thunderstorms this
afternoon.
.TONIGHT...East winds 10 to 15 knots. Seas around 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. A chance of showers. A chance of thunderstorms, mainly
in the evening.
.WEDNESDAY...Southeast winds around 10 knots. Seas around 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. A slight chance of thunderstorms. A chance of showers,
mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at
8 seconds. A slight chance of showers and thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. A
slight chance of thunderstorms. A chance of showers, mainly in
the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 7 seconds. A chance of showers and
thunderstorms.
.FRIDAY THROUGH SATURDAY...South winds 5 to 10 knots. Seas 2 to
3 feet. Showers likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ454-090900-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
153 PM EDT Tue Sep 8 2026

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

Winds and waves higher in and near thunderstorms.

$$

AMZ474-090900-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
153 PM EDT Tue Sep 8 2026

.REST OF TODAY...East winds 10 to 15 knots. Seas around 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
7 seconds. A chance of showers. A slight chance of thunderstorms
late this morning, then a chance of thunderstorms this afternoon.
.TONIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Showers likely with a chance of thunderstorms in the
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. A chance of showers. A slight chance of thunderstorms
in the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. A
chance of showers and thunderstorms, mainly in the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: Northeast 3 feet at 7 seconds and east 2 feet at
8 seconds. A chance of showers and thunderstorms.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A chance
of thunderstorms.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A chance
of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$