436
FZUS52 KJAX 140929
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
529 AM EDT Mon Sep 14 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.

AMZ400-142330-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
529 AM EDT Mon Sep 14 2026

.SYNOPSIS...

Offshore winds will continue across area waters today with the
exception of sea breeze winds developing from the east during the
afternoon hours. Less thunderstorm activity is expected for today
and will likely be limited to northeast Florida nearshore waters.
From Tuesday through Thursday, a strong northeast wind surge will
bring small craft advisory conditions, rough seas, and numerous
showers and a few thunderstorms over the area waters. Improving
conditions are expected by Friday as onshore winds weaken and seas
gradually lower.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 13, 2026 at 0000 UTC...

 50 nautical miles east of Flagler Beach.
 53 nautical miles east of Saint Augustine Beach.
 64 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-142330-
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-
529 AM EDT Mon Sep 14 2026

.TODAY...Northwest winds 5 to 10 knots, becoming east around 10
knots this afternoon. Seas around 2 feet. Wave Detail: East 2
feet at 9 seconds. Intracoastal waters light chop.
.TONIGHT...Southeast winds around 5 knots, becoming east after
midnight. Seas around 2 feet. Wave Detail: East 2 feet at
9 seconds. Intracoastal waters light chop.
.TUESDAY...Northeast winds 15 to 20 knots, increasing to 25 to
30 knots in the afternoon. Seas 2 to 3 feet, building to 4 to
6 feet, occasionally to 8 feet in the afternoon. Wave Detail:
East 3 feet at 7 seconds, becoming northeast 6 feet at 5 seconds.
Intracoastal waters very rough. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at
6 seconds. Intracoastal waters rough. A chance of showers with a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
.WEDNESDAY AND WEDNESDAY NIGHT...Northeast winds 25 to 30 knots.
Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast
8 feet at 7 seconds. Intracoastal waters very rough. A slight
chance of showers and thunderstorms.
.THURSDAY...Northeast winds 20 to 25 knots, becoming east 15 to
20 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to
4 to 5 feet, occasionally to 6 feet after midnight. Wave Detail:
Northeast 7 feet at 7 seconds, becoming east 5 feet at 8 seconds.
Intracoastal waters rough. A chance of showers and thunderstorms.
.FRIDAY...East 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.

$$

AMZ470-472-474-142330-
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-
529 AM EDT Mon Sep 14 2026

.TODAY...Northwest winds 5 to 10 knots, becoming east this
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
9 seconds.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 9 seconds. A slight chance of showers
and thunderstorms.
.TUESDAY...Northeast winds 15 to 20 knots, increasing to 20 to
25 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet, building to 4 to 6 feet, occasionally to 8 feet in the
afternoon. Wave Detail: Northeast 4 feet at 7 seconds, becoming
northeast 6 feet at 6 seconds. A chance of showers with a slight
chance of thunderstorms in the morning, then showers likely with
a chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to
7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at
7 seconds. A chance of showers with a slight chance of
thunderstorms in the evening, then a slight chance of showers
after midnight.
.WEDNESDAY...Northeast winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Northeast 7 feet at
8 seconds. A slight chance of showers.
.WEDNESDAY NIGHT...Northeast winds 20 to 25 knots. Seas 6 to
8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at
7 seconds. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to
6 feet after midnight.  A chance of showers and thunderstorms.
.FRIDAY...East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally
to 6 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$