878
FZUS52 KJAX 301203
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
803 AM EDT Thu Jul 30 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.

AMZ400-310315-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
803 AM EDT Thu Jul 30 2026

.SYNOPSIS...

A frontal zone will be located near or over the area through Friday,
then to the north through the weekend. This will lead to a
prevailing offshore flow through early next week, with the local sea
breeze pinned near the coast each day. A few offshore moving
thunderstorms may be strong with gale force gusts possible.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 29, 2026 at 0000 UTC...

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

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-310315-
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-
803 AM EDT Thu Jul 30 2026

.REST OF TODAY...West winds 5 to 10 knots, becoming south 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: West
2 feet at 4 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms this morning, then
showers and thunderstorms likely this afternoon.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds. Intracoastal waters a
moderate chop. A slight chance of thunderstorms. A chance of
showers, mainly in the evening.
.FRIDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet
at 4 seconds. Intracoastal waters light chop. A slight chance of
showers in the morning, then a chance of showers and
thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal
waters light chop. A chance of showers and thunderstorms in the
evening, then a slight chance of showers after midnight.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas around 2 feet. Wave Detail: South
2 feet at 4 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 4 seconds. Intracoastal
waters a moderate chop. A chance of showers and thunderstorms,
mainly in the evening.
.SUNDAY...South winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters choppy. Showers and
thunderstorms likely.
.MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop. A chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-310315-
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-
803 AM EDT Thu Jul 30 2026

.REST OF TODAY...West winds 10 to 15 knots, becoming southwest
this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: West 3 feet at 5 seconds. A chance of showers and
thunderstorms.
.TONIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 3 feet at 4 seconds. A chance of showers. A
slight chance of thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at
4 seconds. A slight chance of showers in the morning, then a
chance of showers with a slight chance of thunderstorms in the
afternoon.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 4 seconds. A chance of
showers. A chance of thunderstorms, mainly in the evening.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas around 2 feet. Wave Detail: South
2 feet at 4 seconds. A chance of showers. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...Southwest winds around 15 knots. Seas 2 to
4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at
4 seconds and east 2 feet at 9 seconds. A chance of
thunderstorms. Showers likely, mainly in the evening.
.SUNDAY...South winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Showers likely with a chance of
thunderstorms.
.MONDAY...South winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$