139
FZUS52 KJAX 270003
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
803 PM EDT Thu Sep 26 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.

AMZ400-270930-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
803 PM EDT Thu Sep 26 2024

.SYNOPSIS...

Major Hurricane Helene will continue to accelerate north-
northeastward this evening, making landfall along the Florida Big
Bend coast before midnight tonight. Helene will quickly move
northwest of our local waters overnight through Friday morning,
with tropical storm conditions expected to continue through around
sunrise on Friday. Winds and seas will gradually subside on
Friday afternoon, as Helene races northward across Georgia and
enters the Tennessee Valley. Otherwise, a stalled frontal
boundary over the Florida peninsula on Saturday will begin to
slowly lift northward towards the northeast Florida waters early
next week, accompanied by scattered showers and thunderstorms. A
cold front will then enter the southeastern states towards
midweek, possibly pushing across the Georgia waters by Wednesday
night.


.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.


$$

AMZ450-452-454-270930-
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-
803 PM EDT Thu Sep 26 2024

...TORNADO WATCH 686 IN EFFECT UNTIL 6 AM EDT FRIDAY...
...TROPICAL STORM WARNING IN EFFECT...

.REST OF TONIGHT...Tropical storm conditions. South winds 35 to
45 knots. Gusts up to 65 knots. Seas 10 to 12 feet, occasionally
to 15 feet, building to 11 to 15 feet, occasionally to 19 feet.
Wave Detail: Southeast 15 feet at 9 seconds. Intracoastal waters
extremely rough. Showers likely. A slight chance of
thunderstorms.
.FRIDAY...Tropical storm conditions possible. Southwest winds
30 to 35 knots with gusts up to 45 knots, diminishing to 15 to
20 knots in the afternoon. Seas 8 to 11 feet, occasionally to
14 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the
afternoon. Wave Detail: Southeast 11 feet at 9 seconds.
Intracoastal waters extremely rough. A slight chance of showers
and thunderstorms.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. 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 8 seconds
and east 3 feet at 12 seconds. Intracoastal waters a moderate
chop.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 3 feet at
7 seconds and east 2 feet at 11 seconds. 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. Wave Detail: Southeast 3 feet at 7 seconds and east
2 feet at 11 seconds. Intracoastal waters light chop. A slight
chance of showers and thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds and east 2 feet at
11 seconds. Intracoastal waters light chop. A chance of showers
with a slight chance of thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A chance of showers with a slight
chance of thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Intracoastal waters light chop. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Intracoastal waters light chop. A slight chance of
showers and thunderstorms.
.TUESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas around 2 feet. Intracoastal waters light
chop. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds 5 to 10 knots, becoming northwest
after midnight. Seas around 2 feet. Intracoastal waters light
chop. A slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-270930-
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-
803 PM EDT Thu Sep 26 2024

...TORNADO WATCH 686 IN EFFECT UNTIL 6 AM EDT FRIDAY...
...TROPICAL STORM WARNING IN EFFECT...

.REST OF TONIGHT...Tropical storm conditions. South winds 30 to
40 knots. Gusts up to 65 knots. Seas 11 to 12 feet, occasionally
to 15 feet, building to 12 to 16 feet, occasionally to 20 feet.
Wave Detail: East 16 feet at 10 seconds and southeast 15 feet at
9 seconds. Showers likely. A slight chance of thunderstorms.
.FRIDAY...Tropical storm conditions possible. Southwest winds
30 to 35 knots with gusts up to 45 knots, diminishing to 15 to
20 knots in the afternoon. Seas 9 to 13 feet, occasionally to
17 feet, subsiding to 7 to 10 feet, occasionally to 13 feet in
the afternoon. Wave Detail: South 13 feet at 9 seconds and east
5 feet at 12 seconds. A slight chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Southeast 7 feet at 9 seconds and southwest
2 feet at 4 seconds. A slight chance of showers and
thunderstorms.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Southeast 4 feet at 7 seconds and east
2 feet at 11 seconds. A chance of showers. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at
7 seconds and east 2 feet at 11 seconds. A chance of showers and
thunderstorms.
.SUNDAY...Southwest winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 6 seconds
and east 2 feet at 10 seconds. A chance of showers with a slight
chance of thunderstorms.
.SUNDAY NIGHT...Southwest winds around 10 knots. Seas 2 to
3 feet. A chance of showers with a slight chance of
thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 2 to 3 feet. A chance of showers with a slight
chance of thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A chance of showers with a slight chance of
thunderstorms.
.TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$