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FZUS52 KJAX 151202
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
702 AM EST Mon Dec 15 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.

AMZ400-160315-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
702 AM EST Mon Dec 15 2025

.SYNOPSIS...

Arctic high pressure centered over the Ohio and Tennessee Valleys
will gradually weaken as it shifts southward towards our region
tonight. Meanwhile, coastal troughing will take shape over the
northeast Florida waters this afternoon and tonight. Seas will
remain at Small Craft Advisory levels for the offshore waters
through Tuesday morning. Winds will shift to southerly and then
southwesterly on Thursday and Thursday night ahead of a weakening
frontal boundary that will approach our local waters, bringing
widely scattered showers and possibly a few thunderstorms, mainly
offshore. This frontal boundary will cross our area on Friday
morning, shifting winds to northwesterly during the afternoon hours.
High pressure building north of our region on Friday afternoon and
evening will wedge down the southeastern seaboard, resulting in
winds shifting to northeasterly by Friday night and then easterly on
Saturday afternoon.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Dec 06, 2025 at 1200 UTC...

 71 nautical miles east of Flagler Beach.
 74 nautical miles east of Saint Augustine Beach.
 85 nautical miles east southeast of Jacksonville Beach.
 97 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ452-454-160315-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
702 AM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Northeast winds 20 to 25 knots, becoming north 15 to
20 knots this afternoon. Seas 7 to 9 feet, occasionally to
11 feet, subsiding to 6 to 7 feet, occasionally to 9 feet this
afternoon. Wave Detail: Northeast 9 feet at 8 seconds, becoming
northeast 7 feet at 9 seconds. Intracoastal waters rough.
.TONIGHT...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
10 seconds. Intracoastal waters a moderate chop.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
10 seconds. Intracoastal waters a moderate chop.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
10 seconds. Intracoastal waters light chop.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
9 seconds. Intracoastal waters light chop.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 9 seconds. Intracoastal waters light
chop. A slight chance of showers after midnight.
.THURSDAY...Southeast winds 5 to 10 knots, becoming southwest.
Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters
light chop. A slight chance of showers.
.FRIDAY...Northwest winds 10 to 15 knots, becoming north. Seas
3 to 4 feet, occasionally to 5 feet. Intracoastal waters a
moderate chop.

$$

AMZ450-160315-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
702 AM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...Northeast winds 20 to 25 knots, diminishing to 15 to
20 knots this afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: Northeast 7 feet at 8 seconds. Intracoastal
waters rough.
.TONIGHT...North winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 10 seconds.
Intracoastal waters a moderate chop.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds.
Intracoastal waters light chop.
.TUESDAY NIGHT...Northeast winds around 5 knots. Seas 2 to
4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at
10 seconds. Intracoastal waters smooth.
.WEDNESDAY AND WEDNESDAY NIGHT...Northeast winds around 5 knots.
Seas 2 to 3 feet. Wave Detail: East 3 feet at 10 seconds.
Intracoastal waters smooth.
.THURSDAY...Southeast winds around 5 knots, becoming southwest.
Seas 2 to 3 feet. Wave Detail: East 3 feet at 10 seconds.
Intracoastal waters light chop. A slight chance of showers
through the day, then a chance of showers through the night.
.FRIDAY...Northwest winds around 10 knots, becoming north. Seas
2 to 3 feet. Intracoastal waters light chop.

$$

AMZ472-474-160315-
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-
702 AM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING...

.TODAY...Northeast winds 20 to 25 knots, diminishing to 15 to
20 knots this afternoon. Seas 7 to 9 feet, occasionally to
11 feet. Wave Detail: Northeast 9 feet at 8 seconds and north
2 feet at 8 seconds. A slight chance of showers.
.TONIGHT...Northeast winds 10 to 15 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Northeast 8 feet at
10 seconds.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
10 seconds.
.TUESDAY NIGHT...East winds around 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
9 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
9 seconds. A slight chance of showers.
.THURSDAY...South winds around 10 knots, becoming southwest. Seas
4 to 5 feet, occasionally to 6 feet. A chance of showers, then a
slight chance of showers and thunderstorms after midnight.
.FRIDAY...Northwest winds 10 to 15 knots, becoming northeast.
Seas 4 to 5 feet, occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ470-160315-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
702 AM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Northeast winds 20 to 25 knots, diminishing to 15 to
20 knots this afternoon. Seas 7 to 10 feet, occasionally to
13 feet, subsiding to 6 to 8 feet, occasionally to 10 feet this
afternoon. Wave Detail: Northeast 9 feet at 8 seconds, becoming
northeast 8 feet at 10 seconds.
.TONIGHT...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
10 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 10 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. A
slight chance of showers after midnight.
.THURSDAY...South winds 5 to 10 knots, becoming southwest 10 to
15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A chance of
showers .
.FRIDAY...Northwest winds 10 to 15 knots, becoming northeast.
Seas 3 to 4 feet, occasionally to 5 feet.

$$