421
FZUS52 KJAX 251534
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1134 AM EDT Wed Sep 25 2024

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.

AMZ400-252115-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1134 AM EDT Wed Sep 25 2024

.SYNOPSIS...

Hurricane Helene will move into the Gulf this afternoon.
Southeasterly winds will gradually strengthen through the day
reaching tropical storm strength by Thursday morning over area
waters, lingering at these levels into Friday. The tropical system
will begin to move away from the area sometime on Friday. With a
trough lingering over the area into the weekend, conditions are
not expected to be at small craft advisory levels.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Sep 24, 2024 at 1200 UTC...

 44 nautical miles east of Flagler Beach.
 46 nautical miles east of Saint Augustine Beach.
 54 nautical miles east of Jacksonville Beach.
 69 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-252115-
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-
1134 AM EDT Wed Sep 25 2024

...TROPICAL STORM WARNING IN EFFECT...

.REST OF TODAY...Southeast winds 10 to 15 knots, increasing to 20
to 25 knots this afternoon. Seas 4 to 6 feet, occasionally to 8
feet. Wave Detail:
Southeast 6 feet at 5 seconds and east 3 feet at 11 seconds.
Intracoastal waters rough. A slight chance of showers and
thunderstorms this afternoon.
.TONIGHT...Tropical storm conditions possible. Southeast winds
25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave
Detail: Southeast 8 feet at 7 seconds and east 2 feet at
11 seconds. Intracoastal waters very rough. A slight chance of
thunderstorms. Showers.
.THURSDAY...Tropical storm conditions expected. Southeast winds
25 to 30 knots, increasing to 30 to 40 knots with gusts up to
50 knots in the afternoon. Seas 7 to 10 feet, occasionally to
13 feet, building to 9 to 13 feet, occasionally to 17 feet in the
afternoon. Wave Detail: Southeast 13 feet at 8 seconds.
Intracoastal waters extremely rough. Showers with a slight chance
of thunderstorms.
.THURSDAY NIGHT...Tropical storm conditions expected. South winds
30 to 40 knots, diminishing to 25 to 35 knots after midnight.
Gusts up to 60 knots. Seas 11 to 14 feet, occasionally to
18 feet, subsiding to 9 to 13 feet, occasionally to 17 feet after
midnight. Wave Detail: Southeast 14 feet at 9 seconds and
southeast 4 feet at 6 seconds. Intracoastal waters extremely
rough. Showers with a slight chance of thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.FRIDAY...South winds 25 to 30 knots, diminishing to 20 to
25 knots in the afternoon. Seas 7 to 10 feet, occasionally to
13 feet, subsiding to 5 to 8 feet, occasionally to 10 feet in the
afternoon. Wave Detail: Southeast 9 feet at 8 seconds.
Intracoastal waters very rough. A slight chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet after
midnight. Wave Detail: Southeast 5 feet at 7 seconds and east
5 feet at 12 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Intracoastal waters light chop. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to
3 feet. Intracoastal waters light chop. A chance of showers and
thunderstorms.
.SUNDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Intracoastal waters light chop. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas around 2 feet. Intracoastal waters light
chop. A chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-252115-
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-
1134 AM EDT Wed Sep 25 2024

...TROPICAL STORM WARNING IN EFFECT...

.REST OF TODAY...Southeast winds 10 to 15 knots, increasing to
15 to 20 knots this afternoon. Seas 4 to 5 feet, occasionally to
6 feet, building to 5 to 7 feet, occasionally to 9 feet this
afternoon. Wave Detail: Southeast 6 feet at 6 seconds and east
4 feet at 11 seconds. A slight chance of showers and
thunderstorms this afternoon.
.TONIGHT...Tropical storm conditions possible. Southeast winds
20 to 25 knots, increasing to 25 to 30 knots after midnight. Seas
6 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast
8 feet at 7 seconds and east 3 feet at 11 seconds. A slight
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.THURSDAY...Tropical storm conditions expected. Southeast winds
25 to 35 knots. Gusts up to 50 knots. Seas 8 to 10 feet,
occasionally to 13 feet, building to 10 to 13 feet, occasionally
to 17 feet in the afternoon. Wave Detail: Southeast 13 feet at
9 seconds. Showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...Tropical storm conditions expected. South winds
30 to 35 knots, becoming 25 to 35 knots after midnight. Gusts up
to 60 knots. Seas 12 to 15 feet, occasionally to 19 feet,
subsiding to 10 to 14 feet, occasionally to 18 feet after
midnight. Wave Detail: Southeast 15 feet at 9 seconds. Showers
with a slight chance of thunderstorms in the evening, then
showers likely with a chance of thunderstorms after midnight.
.FRIDAY...South winds 25 to 30 knots, diminishing to 20 to
25 knots in the afternoon. Seas 9 to 12 feet, occasionally to
15 feet, subsiding to 6 to 9 feet, occasionally to 11 feet in the
afternoon. Wave Detail: South 11 feet at 8 seconds and east
6 feet at 12 seconds. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 5 to 8 feet, occasionally to
10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet after
midnight. Wave Detail: South 7 feet at 8 seconds and east 2 feet
at 12 seconds. A chance of showers. A chance of thunderstorms,
mainly in the evening.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. A chance of showers and
thunderstorms.
.SUNDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming west after
midnight. Seas 2 to 3 feet. A chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$