Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 300402
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1202 AM EDT Wed Sep 30 2026

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.

AMZ400-301915-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1202 AM EDT Wed Sep 30 2026

.SYNOPSIS...

High pressure over the region shifts northeast through the end of
the week, a predominant east to southeast wind pattern takes
over and persists through the weekend. This onshore flow will draw
in higher moisture levels, resulting in scattered showers and
embedded thunderstorms increasing in coverage through the period.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 29, 2026 at 0000 UTC...

 58 nautical miles east of Flagler Beach.
 62 nautical miles east of Saint Augustine Beach.
 74 nautical miles east southeast of Jacksonville Beach.
 80 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-301915-
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-
1202 AM EDT Wed Sep 30 2026

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal
waters light chop.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 4 seconds. Intracoastal waters a moderate
chop. A slight chance of showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 4 seconds. Intracoastal waters a
moderate chop. A slight chance of showers after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 4 seconds. Intracoastal waters light chop.
A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal
waters light chop. A slight chance of showers after midnight.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 4 seconds. Intracoastal waters light
chop. A chance of showers with a slight chance of thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A slight chance of showers and
thunderstorms in the evening.
.SATURDAY THROUGH SUNDAY...South winds 10 to 15 knots. Seas 2 to
3 feet. Intracoastal waters a moderate chop. A chance of showers
and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-301915-
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-
1202 AM EDT Wed Sep 30 2026

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east
2 feet at 9 seconds. A slight chance of showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 3 seconds and east 2 feet at
9 seconds. A slight chance of thunderstorms. A slight chance of
showers in the morning, then a chance of showers in the
afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: East 2 feet at 4 seconds. A slight chance of
showers.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 4 seconds. A slight chance of showers
and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east
2 feet at 12 seconds. A slight chance of showers and
thunderstorms.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 4 seconds and east 2 feet at
11 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
.SATURDAY THROUGH SUNDAY...South winds 10 to 15 knots. Seas 2 to
3 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$