012
FZUS52 KJAX 311825
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
125 PM EST Wed Dec 31 2025

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.

AMZ400-010930-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
125 PM EST Wed Dec 31 2025

.SYNOPSIS...

High pressure will slowly weaken as it pushes eastward across the
Gulf tonight and Thursday, becoming centered over south Florida by
Friday. Gusty west-northwesterly winds today will briefly increase
tonight for portions of our local offshore waters, where a Small
Craft Advisory will be in effect later this evening through
Thursday morning. Winds will then shift to southwesterly while
briefly diminishing from Thursday afternoon through Friday.

Weak low pressure developing over the lower Mississippi Valley on
Friday will shift eastward across the southeastern states on
Saturday, moving offshore on Saturday night. This storm system
will bring showers and a few embedded thunderstorms to our area on
Saturday and Saturday night, along with Small Craft Advisory
conditions for the offshore waters. Breezy northerly winds are
forecast in the wake of this storm system on Sunday and Sunday
night. Winds will shift to north-northeasterly by Monday as high
pressure builds over the Mid-Atlantic states.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Dec 31, 2025 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.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-010930-
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-
125 PM EST Wed Dec 31 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 10 PM EST THIS
EVENING THROUGH THURSDAY MORNING...

.TONIGHT...West winds 10 to 15 knots, increasing to 15 to 20
knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Northwest 3 feet at 4 seconds and northeast 2 feet at
8 seconds. Intracoastal waters becoming choppy.
.THURSDAY...West winds around 15 knots, decreasing to 10 to 15
knots during the afternoon. Seas 2 to 3 feet. Wave Detail:
Northwest 3 feet at 4 seconds and northeast 2 feet at 8 seconds.
Intracoastal waters becoming a light chop.
.THURSDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: West 2 feet at 3 seconds. Intracoastal waters a
light chop.
.FRIDAY...West southwest winds around 10 knots. Seas around 2
feet in the morning, then 1 foot or less. Intracoastal waters a
light chop.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 3 seconds. Intracoastal waters a light chop.
.SATURDAY AND SATURDAY NIGHT...West southwest winds 15 to 20
knots, becoming northwest after midnight. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds.
Intracoastal waters choppy. Showers with a slight chance of
thunderstorms.
.SUNDAY...North winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Intracoastal waters choppy. A slight
chance of showers in the morning.
.SUNDAY NIGHT AND MONDAY...North winds around 15 knots, becoming
north northeast and diminishing to around 10 knots during the
afternoon. Seas 2 to 3 feet. Intracoastal waters becoming a
light chop.

Winds and waves higher in and near thunderstorms.

$$

AMZ472-010930-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
125 PM EST Wed Dec 31 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 10 PM TO 11 PM EST
THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EST THIS EVENING
THROUGH THURSDAY MORNING...

.TONIGHT...West winds around 15 knots, increasing to around 20
knots towards midnight. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: Northwest 5 feet at 5 seconds and northeast 2 feet
at 8 seconds.
.THURSDAY...West winds around 20 knots, diminishing to around 15
knots during the afternoon. Seas 3 to 5 feet, occasionally to 6
feet. Wave Detail: Northwest 5 feet at 5 seconds and northeast 2
feet at 8 seconds.
.THURSDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: West 3 feet at 4 seconds.
.FRIDAY...West southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: West 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 4 seconds.
.SATURDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southwest 5 feet at
5 seconds. Showers likely with a slight chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...West winds 20 to 25 knots, becoming northwest
after midnight. Seas 4 to 6 feet, occasionally
...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING... to 8 feet. Showers
with a slight chance of thunderstorms.
.SUNDAY...North winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A chance of showers in the morning.
.SUNDAY NIGHT AND MONDAY...North northeast winds around 15 knots,
decreasing to around 10 knots during the afternoon. Seas 3 to 4
feet, occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ470-010930-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
125 PM EST Wed Dec 31 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 10 PM TO 11 PM EST
THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EST THIS EVENING
THROUGH THURSDAY MORNING...

.TONIGHT...West winds around 15 knots, increasing to around 20
knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: West 5 feet at 5 seconds and east 2 feet at 8
seconds.
.THURSDAY...West winds around 20 knots, diminishing to 10 to 15
knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: West 5 feet at 5 seconds and east 2 feet at 8
seconds.
.THURSDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: West 3 feet at 4 seconds.
.FRIDAY...West southwest winds around 10 knots. Seas around 2
feet. Wave Detail: West 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 4 seconds.
.SATURDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: South 5 feet at 5 seconds. A
slight chance of showers in the morning, then showers likely with
a slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots, becoming
northwest after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Showers with a slight chance of thunderstorms in the
evening, then showers likely after midnight.
.SUNDAY...North winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of showers.
.SUNDAY NIGHT AND MONDAY...North northeast winds 10 to 15 knots,
diminishing to around 10 knots during the afternoon. Seas 2 to 4
feet, occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ474-010930-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
125 PM EST Wed Dec 31 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 10 PM EST THIS
EVENING THROUGH THURSDAY EVENING...

.TONIGHT...West northwest winds increasing to 15 to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4
feet at 7 seconds.
.THURSDAY...West winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northwest 4 feet at
5 seconds and northeast 2 feet at 8 seconds.
.THURSDAY NIGHT...West winds around 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: West 3 feet at 5 seconds.
.FRIDAY...West southwest winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 3 seconds.
.SATURDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southwest 4 feet at 4
seconds. A chance of showers with a slight chance of thunderstorms
in the afternoon.
.SATURDAY NIGHT...Southwest winds 20 to 25 knots, becoming
northwest late. Seas 4 to 6 feet, occasionally to 8 feet.
Showers with a slight chance of thunderstorms.
.SUNDAY...North winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A chance of showers.
.SUNDAY NIGHT AND MONDAY...North northeast winds 10 to 15 knots,
diminishing to around 10 knots during the afternoon. Seas 3 to 4
feet, occasionally to 5 feet. A slight chance of showers.

$$