178
FZUS52 KJAX 102154
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
554 PM EDT Thu Sep 10 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.

AMZ400-111300-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
554 PM EDT Thu Sep 10 2026

.SYNOPSIS...

Atlantic high pressure centered near Bermuda this afternoon will
shift southward while gradually weakening on Friday as a frontal
boundary shifts towards the southeastern states. This front will
stall and weaken well to the north of our local waters this
weekend. Prevailing winds will become southwesterly from Friday
through the upcoming weekend, with the afternoon sea breeze
shifting winds to southeasterly each afternoon across the near
shore waters. Showers and thunderstorms developing over coastal
locations during the afternoon hours will shift eastward across
our local waters during the late afternoon and evening hours from
Friday through the upcoming weekend. High pressure will then build
down the southeastern seaboard early next week, with onshore
winds forecast to develop by Monday afternoon, with breezy
conditions and building seas forecast towards Tuesday and
Wednesday of next week.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 10, 2026 at 0000 UTC...

 46 nautical miles east of Flagler Beach.
 53 nautical miles east of Saint Augustine Beach.
 64 nautical miles east southeast of Jacksonville Beach.
 76 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-111300-
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-
554 PM EDT Thu Sep 10 2026

.TONIGHT...South winds 10 to 15 knots, becoming southwest 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East
3 feet at 7 seconds and south 2 feet at 4 seconds. Intracoastal
waters a moderate chop. A chance of showers with a slight chance
of thunderstorms this evening, then a slight chance of showers
after midnight.
.FRIDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 7 seconds and south 2 feet at 4 seconds. Intracoastal
waters a moderate chop. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds 10 to 15 knots, becoming southwest
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 2 feet at 8 seconds.
Intracoastal waters a moderate chop. A chance of showers with a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
.SATURDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
4 seconds and east 2 feet at 8 seconds. Intracoastal waters light
chop. A chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 8 seconds and southeast
2 feet at 4 seconds. Intracoastal waters light chop. A slight
chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.SUNDAY AND SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas
around 2 feet. Wave Detail: Southeast 2 feet at 8 seconds.
Intracoastal waters light chop. A slight chance of showers and
thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots, becoming east. Seas
around 2 feet. Intracoastal waters light chop. A slight chance of
showers and thunderstorms.
.TUESDAY...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters choppy. A slight
chance of thunderstorms in the morning. A chance of showers
through the day. A chance of thunderstorms in the afternoon, then
a slight chance of showers and thunderstorms through the night.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-111300-
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-
554 PM EDT Thu Sep 10 2026

.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 7 seconds and
south 2 feet at 4 seconds. A slight chance of showers this
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.FRIDAY...Southwest winds around 10 knots, becoming south in the
afternoon. Seas around 3 feet. Wave Detail: East 3 feet at
8 seconds and south 2 feet at 4 seconds. A slight chance of
thunderstorms. A chance of showers, mainly in the morning.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 8 seconds and south 2 feet at
4 seconds. A chance of showers. A slight chance of thunderstorms.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
8 seconds and south 2 feet at 4 seconds. A chance of showers. A
chance of thunderstorms, mainly in the morning.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 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.
.SUNDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms.
.MONDAY...North winds 5 to 10 knots, becoming east. Seas 2 to
3 feet. A slight chance of showers and thunderstorms in the
morning. A slight chance of showers in the evening. A slight
chance of thunderstorms through the night. A chance of showers
after midnight.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A chance of showers and thunderstorms .

Winds and seas higher in and near thunderstorms.

$$