259
FZUS52 KJAX 211112
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
712 AM EDT Fri Aug 21 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.

AMZ400-220215-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
712 AM EDT Fri Aug 21 2026

.SYNOPSIS...

A frontal zone will extend across the Carolinas and into Georgia
this period, with a high pressure ridge to the southeast. Rounds of
mainly afternoon and evening showers and thunderstorms can be
expected each day.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 20, 2026 at 0000 UTC...

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

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-220215-
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-
712 AM EDT Fri Aug 21 2026

.TODAY...Southwest winds 5 to 10 knots, becoming southeast 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: South
3 feet at 4 seconds. Intracoastal waters a moderate chop. A
chance of showers with a slight chance of thunderstorms this
afternoon.
.TONIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 4 seconds. Intracoastal waters a moderate
chop. A slight chance of thunderstorms. A chance of showers,
mainly in the evening.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds. Intracoastal waters a moderate
chop. A slight chance of showers and thunderstorms in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 5 seconds. Intracoastal
waters a moderate chop. A slight chance of showers and
thunderstorms.
.SUNDAY...Southwest winds 10 to 15 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at
5 seconds. Intracoastal waters a moderate chop. A slight chance
of showers and thunderstorms.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 4 seconds. Intracoastal waters a
moderate chop.
.MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms through the night.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-220215-
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-
712 AM EDT Fri Aug 21 2026

.TODAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: South
2 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance
of showers and thunderstorms this afternoon.
.TONIGHT...Southwest winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds
and east 2 feet at 8 seconds. A slight chance of thunderstorms. A
chance of showers, mainly in the evening.
.SATURDAY...Southwest winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: South 3 feet at 5 seconds. A slight chance of
showers. A slight chance of thunderstorms.
.SATURDAY NIGHT...Southwest winds around 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at
5 seconds. A chance of showers and thunderstorms.
.SUNDAY AND SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest
3 feet at 5 seconds. A slight chance of showers and
thunderstorms.
.MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 4 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms through the day, then a
chance of showers and thunderstorms in the evening. A slight
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$