981
FZUS52 KJAX 211613
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1213 PM 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.

AMZ400-220715-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1213 PM 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. Brief southerly wind surges are expected during
the late afternoon and evening hours, but are expected to remain
below Small Craft Exercise Caution levels through the period.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 21, 2026 at 0000 UTC...

 54 nautical miles east of Flagler Beach.
 58 nautical miles east of Saint Augustine Beach.
 70 nautical miles east southeast of Jacksonville Beach.
 81 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-220715-
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-
1213 PM EDT Fri Aug 21 2026

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

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-220715-
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-
1213 PM EDT Fri Aug 21 2026

.REST OF TODAY...South winds 10 to 15 knots. 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 10 to 15 knots. Seas around 3 feet.
Wave Detail: South 3 feet at 4 seconds and east 2 feet at
8 seconds. A slight chance of showers and thunderstorms.
.SATURDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 5 seconds. A chance of showers with
a slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
3 feet. Wave Detail: South 3 feet at 4 seconds. A slight chance
of thunderstorms. A chance of showers, mainly in the evening.
.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. A slight chance of showers and thunderstorms in the
morning.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds.
.MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the evening. A slight
chance of showers after midnight.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers through the day. A slight chance of
thunderstorms. A chance of showers through the night.

Winds and seas higher in and near thunderstorms.

$$