927
FZUS52 KJAX 121250
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
850 AM EDT Sat Jul 12 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.

AMZ400-130400-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
850 AM EDT Sat Jul 12 2025

.SYNOPSIS...

High pressure extending across central Florida and a surface trough
across Georgia will bring prevailing southwest winds, shifting
onshore each afternoon as the Atlantic sea breeze moves inland.
The surface trough will move over the forecast waters Monday and
slowly move west of the area by late Tuesday. Scattered showers and
storms will be possible each day over area waters, mainly during the
afternoon and evening. Some storms may produce strong gusty winds
and frequent lightning.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 10, 2025 at 1200 UTC...

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

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-130400-
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-
850 AM EDT Sat Jul 12 2025

.REST OF TODAY...Southwest winds 5 to 10 knots, becoming southeast
10 knots this afternoon. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 8 seconds. Intracoastal waters light chop. A chance of
showers and thunderstorms this afternoon.
.TONIGHT...South winds 10 to 15 knots, becoming west after
midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
8 seconds and south 2 feet at 4 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.
.SUNDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
8 seconds. Intracoastal waters light chop. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 8 seconds. Intracoastal waters light chop. A chance of showers
with a slight chance of thunderstorms in the evening, then a
slight chance of showers after midnight.
.MONDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
8 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal
waters light chop. A chance of showers and thunderstorms, mainly
in the evening.
.TUESDAY THROUGH WEDNESDAY...South winds 10 to 15 knots. Seas
2 to 3 feet. Intracoastal waters a moderate chop. Showers with
thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-130400-
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-
850 AM EDT Sat Jul 12 2025

.REST OF TODAY...West winds 5 to 10 knots, becoming south 10 knots this
afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at 8
seconds and southwest 2 feet at 4 seconds. A slight chance of
showers this morning, then a chance of showers with a slight
chance of thunderstorms this afternoon.
.TONIGHT...South winds 10 to 15 knots, becoming southwest after
midnight. 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 in the evening, then a chance of
thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at
4 seconds and southeast 2 feet at 8 seconds. A chance of showers
and thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 8 seconds. A chance of showers. A chance of thunderstorms,
mainly in the evening.
.MONDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
8 seconds. A chance of showers. A slight chance of thunderstorms
in the morning, then a chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: East 2 feet at 9 seconds. A chance of
showers and thunderstorms.
.TUESDAY THROUGH WEDNESDAY...South winds 10 to 15 knots. Seas
2 to 3 feet. Showers likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$