111
FZUS52 KJAX 040551
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
151 AM EDT Mon Aug 4 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.

AMZ400-042100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
151 AM EDT Mon Aug 4 2025

.SYNOPSIS...

A stalled front will linger across the local coastal waters through
Monday with waves of showers and afternoon thunderstorms. The front
will gradually shift southward Tuesday into Wednesday with high
pressure north of the region and a coastal trough forming well off
of the Florida coast. This pattern will bring prevailing onshore
flow and elevated combined seas. The National Hurricane Center is
monitoring a couple areas of potential tropical cyclone develop
across the western Atlantic this week, one of those areas is along
the aforementioned trough . It appears a weak low pressure may
organize and shift westward as toward the coast this weekend.
Stakeholders should continue to monitor NHC forecasts through the
week.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 31, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 79 nautical miles east northeast of Jacksonville Beach.
 75 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-042100-
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-
151 AM EDT Mon Aug 4 2025

.TODAY...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 9 seconds. Intracoastal waters light
chop. A chance of showers with a slight chance of thunderstorms
this morning, then showers and thunderstorms likely this
afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south after
midnight. Seas around 3 feet. Wave Detail: East 3 feet at
9 seconds. Intracoastal waters light chop. Showers likely with a
chance of thunderstorms in the evening, then a slight chance of
showers and thunderstorms after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 9 seconds. Intracoastal waters light
chop. A chance of showers with a slight chance of thunderstorms
in the morning, then showers and thunderstorms likely in the
afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 2 to 3 feet. Wave Detail:
Northeast 3 feet at 9 seconds. Intracoastal waters light chop.
Showers likely with a chance of thunderstorms in the evening,
then a chance of showers with a slight chance of thunderstorms
after midnight.
.WEDNESDAY...North winds around 5 knots, becoming east in the
afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
9 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light
chop. Showers likely with a chance of thunderstorms.
.THURSDAY THROUGH FRIDAY...Southeast winds 5 to 10 knots. Seas
2 to 3 feet. Intracoastal waters light chop. Showers with
thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-042100-
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-
151 AM EDT Mon Aug 4 2025

.TODAY...South winds around 5 knots, becoming east this
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 9 seconds. A chance of showers. A slight
chance of thunderstorms this morning, then a chance of
thunderstorms this afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south after
midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 9 seconds and southeast 2 feet at 4 seconds.
A chance of thunderstorms. Showers likely, mainly in the evening.
.TUESDAY...South winds around 5 knots, becoming southeast in the
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 3 feet at 9 seconds. Showers likely with a slight
chance of thunderstorms in the morning, then a chance of showers
and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 3 feet at 9 seconds. Showers likely. A chance
of thunderstorms, mainly in the evening.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
3 feet at 9 seconds. Showers likely with a chance of
thunderstorms.
.THURSDAY THROUGH FRIDAY...Southeast winds 5 to 10 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 8 seconds. Showers with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$