Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 281710
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
110 PM EDT Sat Jun 28 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.

AMZ400-290815-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
110 PM EDT Sat Jun 28 2025

.SYNOPSIS...

Atlantic high pressure ridge axis will remain across the Florida
peninsula through early next week as surface troughing gradually
sharpens over the southeastern states, creating a prevailing
offshore wind flow. Afternoon and evening showers and thunderstorms
will likely push eastward across our local waters each day, with
daily strong storm potential. Daily afternoon into evening south-
southeasterly wind surges expected along the nearshore waters as the
Atlantic sea breeze shifts inland.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jun 26, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 85 nautical miles east southeast of Jacksonville Beach.
106 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-290815-
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-
110 PM EDT Sat Jun 28 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 3 feet at 9 seconds and southeast 2 feet at 4 seconds.
Intracoastal waters a moderate chop. A slight chance of showers
late this morning, then 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 2 feet at
4 seconds and east 2 feet at 9 seconds. Intracoastal waters a
moderate chop. A chance of showers with a slight chance of
thunderstorms in the evening.
.SUNDAY...West winds 5 to 10 knots, becoming south 10 to 15 knots
in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet
at 9 seconds and southwest 2 feet at 4 seconds. Intracoastal
waters a moderate 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 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 2 feet at 9 seconds.
Intracoastal waters a moderate chop. Showers likely with a chance
of thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.MONDAY...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 4 seconds and east 2 feet at 9 seconds.
Intracoastal waters a moderate chop. A chance of showers with a
slight chance of thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 2 feet at 9 seconds.
Intracoastal waters a moderate chop. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms in the morning, then showers likely in the
afternoon. A chance of thunderstorms through the night. A chance
of showers in the evening, then a slight chance of showers after
midnight.
.WEDNESDAY...Southwest winds around 10 knots. Seas 2 to 3 feet.
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. A chance of thunderstorms
in the evening. A chance of showers through the night.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-290815-
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-
110 PM EDT Sat Jun 28 2025

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

Winds and seas higher in and near thunderstorms.

$$