623
FZUS52 KJAX 110907
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
507 AM EDT Fri Sep 11 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.

AMZ400-120015-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
507 AM EDT Fri Sep 11 2026

.SYNOPSIS...

Atlantic high pressure ridge will be centered from Bermuda to central
Florida through early next week. This will favor prevailing southwest
to south winds the next few days but the afternoon sea breeze will
shift winds to southeast each afternoon across the near shore waters.
Thunderstorms will likely develop over coastal locations during
the afternoon hours and will shift eastward across our local waters
during the afternoon and evening hours through the weekend. Onshore
winds are forecast to develop Tuesday, 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.

$$

AMZ450-452-454-120015-
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-
507 AM EDT Fri Sep 11 2026

.TODAY...Southwest winds 5 to 10 knots, becoming southeast 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 7 seconds and southeast 2 feet at 3 seconds.
Intracoastal waters a moderate chop. A chance of showers and
thunderstorms this afternoon.
.TONIGHT...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 7 seconds. Intracoastal
waters a moderate chop. A chance of showers and thunderstorms in
the evening.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 3 seconds and southeast 2 feet at
8 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the afternoon.
.SATURDAY 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 southeast 2 feet at 8 seconds.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms in the evening.
.SUNDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters
light chop. A slight chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 9 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the evening.
.MONDAY...Southeast winds around 5 knots. Seas around 2 feet.
Intracoastal waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters choppy. A chance of
showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-120015-
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-
507 AM EDT Fri Sep 11 2026

.TODAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 8 seconds. A slight chance of showers and
thunderstorms.
.TONIGHT...South winds 10 to 15 knots, becoming southwest 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 8 seconds and south 2 feet at 4 seconds. A slight
chance of showers and 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. A slight chance of showers and thunderstorms in the
morning.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 8 seconds and southeast 2 feet
at 4 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 slight chance of showers and thunderstorms in the
morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 9 seconds. A chance of showers
and thunderstorms, mainly in the evening.
.MONDAY...Northwest winds 5 to 10 knots, becoming southeast. Seas
2 to 3 feet. A slight chance of showers and thunderstorms in the
morning. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Northeast winds 10 to 15 knots, becoming east 15 to
20 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to
4 to 5 feet, occasionally to 6 feet after midnight. Showers
likely and a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$