140
FZUS52 KJAX 220544
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
144 AM EDT Fri Aug 22 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.

AMZ400-222045-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
144 AM EDT Fri Aug 22 2025

.SYNOPSIS...

Lingering swells from Hurricane Erin will continue to subside across
area waters today through tonight. A weak front will shift southward
toward the local waters late tonight and then linger across the
area through the weekend bringing an increase in shower and thunderstorm
activity. The front will slowly push southward early next week
into north central Florida.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 21, 2025 at 1200 UTC...

 56 nautical miles east northeast of Flagler Beach.
 54 nautical miles east of Saint Augustine Beach.
 61 nautical miles east of Jacksonville Beach.
 89 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-222045-
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-
144 AM EDT Fri Aug 22 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 7 AM EDT THIS
MORNING...

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet.
Wave Detail: East 5 feet at 12 seconds and southeast 2 feet at 6
seconds. Intracoastal waters light chop. A slight chance of
showers and thunderstorms.
.FRIDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: East 5 feet at 12 seconds and southeast 2 feet at
6 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at
12 seconds and southeast 2 feet at 6 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.
.SATURDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 4 feet at 13 seconds and southeast 2 feet at 6 seconds.
Intracoastal waters light chop. A chance of showers with a slight
chance of thunderstorms in the morning, then showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 3 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at
13 seconds and southeast 2 feet at 6 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.
.SUNDAY...West winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
13 seconds and southeast 2 feet at 6 seconds. Intracoastal waters
light chop. A chance of showers with a slight chance of
thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters light chop. A chance
of showers. A chance of thunderstorms, mainly in the evening.
.MONDAY THROUGH TUESDAY...North winds 5 to 10 knots. Seas 2 to
4 feet, occasionally to 5 feet. Intracoastal waters light chop. A
chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-222045-
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-
144 AM EDT Fri Aug 22 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING...

.REST OF TONIGHT...West winds 5 to 10 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 12 seconds
and southeast 3 feet at 6 seconds. A slight chance of showers and
thunderstorms late this evening, then a chance of showers and
thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast 6 feet at 12 seconds and southeast 3 feet at 6 seconds.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
12 seconds and southeast 3 feet at 6 seconds. Showers and
thunderstorms likely in the evening, then showers with a chance
of thunderstorms after midnight.
.SATURDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 4 to 5 feet, occasionally to 7 feet. Wave Detail:
Northeast 6 feet at 13 seconds and southeast 3 feet at 6 seconds.
Showers likely with a slight chance of thunderstorms in the
morning, then showers and thunderstorms in the afternoon.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...West winds 5 to 10 knots.
Seas 4 to 5 feet, occasionally to 7 feet. Wave Detail: Northeast
5 feet at 13 seconds and southeast 3 feet at 6 seconds. Showers
with a chance of thunderstorms.
.MONDAY THROUGH TUESDAY...Northeast winds 5 to 10 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at
12 seconds and south 2 feet at 6 seconds. A chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$