668
FZUS52 KJAX 131734
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
134 PM EDT Wed Aug 13 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.

AMZ400-140800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
134 PM EDT Wed Aug 13 2025

.SYNOPSIS...

High pressure ridge centered across the Florida peninsula will drift
southward through Friday as a trough develops over the southeastern
states. Prevailing southwest to south winds are forecast as this
trough settles over our local waters on Friday, with prevailing
onshore winds then developing by late Saturday and Saturday night as
the trough potentially organizes into a weak low pressure center
along the southeastern seaboard. Scattered afternoon showers and
thunderstorms are expected over our nearshore local waters through
Friday, with an increase in coverage possible during the upcoming
weekend.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 12, 2025 at 1200 UTC...

 50 nautical miles east northeast of Flagler Beach.
 50 nautical miles east northeast of Saint Augustine Beach.
 47 nautical miles east of Jacksonville Beach.
 53 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-140800-
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-
134 PM EDT Wed Aug 13 2025

.REST OF TODAY...Southeast winds 5 to 10 knots, increasing to
10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds. Intracoastal waters a moderate
chop. A slight chance of showers and thunderstorms late this
morning, then a chance of showers and thunderstorms this
afternoon.
.TONIGHT...South winds 10 to 15 knots, becoming southwest after
midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
4 seconds. Intracoastal waters a moderate chop. A slight chance
of showers and thunderstorms in the evening.
.THURSDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds and east 2 feet at 9 seconds.
Intracoastal waters a moderate chop. A chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming west 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds. Intracoastal waters a moderate chop. A
chance of showers and thunderstorms, mainly in the evening.
.FRIDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
5 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.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 4 seconds. Intracoastal waters light chop. A chance of
showers. A chance of thunderstorms, mainly in the evening.
.SATURDAY THROUGH SUNDAY...Northeast winds 5 to 10 knots. Seas
around 2 feet. Intracoastal waters light chop. Showers and
thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-140800-
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-
134 PM EDT Wed Aug 13 2025

.REST OF TODAY...South winds around 5 knots, increasing to 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds and east 2 feet at 9 seconds. A slight chance
of showers and thunderstorms.
.TONIGHT...South winds 10 to 15 knots, becoming southwest after
midnight. Seas around 3 feet. Wave Detail: South 3 feet at
4 seconds and east 2 feet at 9 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South
2 feet at 4 seconds and east 2 feet at 9 seconds. A slight chance
of showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
after midnight. Seas 2 to 3 feet. Wave Detail: South 3 feet at
4 seconds and east 2 feet at 9 seconds. A chance of showers and
thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at
4 seconds and east 2 feet at 9 seconds. A slight chance of
thunderstorms. A chance of showers, mainly in the morning.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east
2 feet at 9 seconds. A chance of showers and thunderstorms.
.SATURDAY THROUGH SUNDAY...Northeast 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.

$$