FZUS52 KJAX 161039
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
539 AM EST Tue Dec 16 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.
AMZ400-170145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
539 AM EST Tue Dec 16 2025
.SYNOPSIS...
Arctic high pressure settling over the southeastern states this
morning will shift eastward and offshore tonight. Meanwhile,
coastal troughing situated over the northeast and east central
Florida waters will lift northward tonight, generating a few
showers, mainly offshore. Seas will remain at Small Craft Advisory
levels for the northeast Florida waters through late this
morning. Winds will shift to south and then southwest on Thursday
and Thursday night ahead of a weakening frontal boundary that will
approach our local waters, accompanied by showers and possibly a
few thunderstorms. This frontal boundary will cross our area on
Friday, shifting winds to northwest 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 northeast by Friday night and then east on
Saturday afternoon as another coastal trough takes shape over the
northeast Florida waters during the upcoming weekend.
.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.
$$
AMZ452-454-170145-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...
.TODAY...North winds 15 to 20 knots, diminishing to around 15
knots this afternoon. Seas 5 to 7 feet, occasionally to 9 feet,
diminishing to 4 to 6 feet, occasionally to 8 feet late this
morning. Wave Detail: Northeast 6 feet at 10 seconds.
Intracoastal waters becoming a moderate chop.
.TONIGHT...Northeast winds 10 to 15 knots, becoming east northeast
5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: Northeast 5 feet at 10 seconds. Intracoastal
waters a moderate chop. A slight chance of showers.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 8 seconds. Intracoastal waters mostly smooth.
.WEDNESDAY NIGHT...East southeast winds 5 to 10 knots. Seas 3 to 4
feet, occasionally to 5 feet. Wave Detail: East 4 feet at 9
seconds. Intracoastal waters mostly smooth. A chance of showers
with a slight chance of thunderstorms after midnight.
.THURSDAY...Southeast winds 5 to 10 knots, becoming south during
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 4 feet at 9 seconds. Intracoastal waters mostly
smooth. A chance of showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
around 15 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 9 seconds and southwest 2
feet at 4 seconds. Intracoastal waters becoming a moderate chop.
A chance of showers.
.FRIDAY...West winds around 15 knots, becoming northwest during
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet.
Intracoastal waters a moderate chop.
.FRIDAY NIGHT...North winds around 15 knots, becoming northeast 10
to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5
feet. Intracoastal waters becoming a light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
during the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Intracoastal waters mostly smooth.
Winds and waves higher in and near thunderstorms.
$$
AMZ450-170145-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
539 AM EST Tue Dec 16 2025
.TODAY...North winds 10 to 15 knots, diminishing to around 10
knots this afternoon. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: East 5 feet at 10 seconds. Intracoastal waters a
light chop.
.TONIGHT...North northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
Intracoastal waters mostly smooth.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast during
the afternoon. Seas around 3 feet. Wave Detail: East 3 feet at 10
seconds. Intracoastal waters mostly smooth.
.WEDNESDAY NIGHT...East northeast winds 5 to 10 knots, becoming
east around 5 knots after midnight. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters mostly
smooth. A chance of showers after midnight.
.THURSDAY...Southeast winds around 5 knots, becoming south 5 to 10
knots during the afternoon. Seas 2 to 3 feet. Wave Detail: East 3
feet at 10 seconds. Intracoastal waters mostly smooth. A chance
of showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 4 feet at 9 seconds and southwest 2
feet at 3 seconds. Intracoastal waters a light chop. A chance of
showers.
.FRIDAY...West winds 10 to 15 knots, becoming northwest around 10
knots during the afternoon. Seas 2 to 4 feet, occasionally to 5
feet.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots, becoming north
around 10 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
during the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Intracoastal waters mostly smooth.
Winds and waves higher in and near thunderstorms.
$$
AMZ472-474-170145-
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-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING...
.TODAY...North northeast winds around 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet, diminishing to 4 to 6 feet, occasionally
to 8 feet, late this morning. Wave Detail: Northeast 7 feet at 10
seconds. A slight chance of showers.
.TONIGHT...East northeast winds 10 to 15 knots, becoming southeast
after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: East 5 feet at 9 seconds. A chance of showers.
.WEDNESDAY...South winds 5 to 10 knots, becoming east around 5
knots during the afternoon. Seas 4 to 5 feet, occasionally to 6
feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of
showers.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5
feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 9
seconds. A slight chance of showers in the evening, then a chance
of showers with a slight chance of thunderstorms after midnight.
.THURSDAY...South winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 5 feet at 9
seconds. Showers likely with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
15 to 20 knots after midnight. Seas 5 to 6 feet, occasionally to 8
feet. Wave Detail: East 5 feet at 9 seconds and southwest 3 feet
at 4 seconds. A chance of showers.
.FRIDAY...West winds 15 to 20 knots, becoming northwest around 15
knots during the afternoon. Seas 4 to 6 feet, occasionally to 8
feet. A slight chance of showers in the morning.
.FRIDAY NIGHT...North northwest winds around 15 knots, becoming
north northeast 10 to 15 knots after midnight. Seas 3 to 4 feet,
occasionally to 5 feet.
.SATURDAY...Northeast winds around 10 knots, becoming east 5 to 10
knots during the afternoon. Seas 3 to 4 feet, occasionally to 5
feet.
Winds and seas higher in and near thunderstorms.
$$
AMZ470-170145-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 9 AM EST THIS
MORNING...
.TODAY...North northeast winds around 15 knots, becoming northeast
around 10 knots this afternoon. Seas 5 to 6 feet, occasionally to
8 feet, diminishing to 4 to 5 feet, occasionally to 7 feet late
this morning. Wave Detail: East 6 feet at 10 seconds.
.TONIGHT...Northeast winds 5 to 10 knots, becoming east northeast
around 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 9 seconds. A slight chance of
showers after midnight.
.WEDNESDAY...East southeast winds around 10 knots, becoming north
around 5 knots during the afternoon. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. A
slight chance of showers.
.WEDNESDAY NIGHT...East northeast winds 5 to 10 knots, becoming
southeast around 10 knots after midnight. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. A
slight chance of showers in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.
.THURSDAY...Southeast winds around 10 knots, becoming south 5 to
10 knots during the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Southeast 5 feet at 9 seconds. Showers
likely with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
15 to 20 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Southeast 5 feet at 9 seconds and southwest
3 feet at 4 seconds. A chance of showers.
.FRIDAY...West winds 15 to 20 knots, becoming northwest around 15
knots during the afternoon. Seas 4 to 6 feet, occasionally to 8
feet.
.FRIDAY NIGHT...Northwest winds around 15 knots, becoming north 10
to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6
feet.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
around 5 knots during the afternoon. Seas 3 to 4 feet,
occasionally to 5 feet.
Winds and seas higher in and near thunderstorms.
$$
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
539 AM EST Tue Dec 16 2025
Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
AMZ400-170145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
539 AM EST Tue Dec 16 2025
.SYNOPSIS...
Arctic high pressure settling over the southeastern states this
morning will shift eastward and offshore tonight. Meanwhile,
coastal troughing situated over the northeast and east central
Florida waters will lift northward tonight, generating a few
showers, mainly offshore. Seas will remain at Small Craft Advisory
levels for the northeast Florida waters through late this
morning. Winds will shift to south and then southwest on Thursday
and Thursday night ahead of a weakening frontal boundary that will
approach our local waters, accompanied by showers and possibly a
few thunderstorms. This frontal boundary will cross our area on
Friday, shifting winds to northwest during the afternoon hours.
High pressure building north of our region on Friday afternoon and
evening will wedge down the southeastern seaboard, resulting in
winds shifting to northeast by Friday night and then east on
Saturday afternoon as another coastal trough takes shape over the
northeast Florida waters during the upcoming weekend.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 06, 2025 at 1200 UTC...
71 nautical miles east of Flagler Beach.
74 nautical miles east of Saint Augustine Beach.
85 nautical miles east southeast of Jacksonville Beach.
97 nautical miles east southeast of St Simons Island.
This data courtesy of the Naval Oceanographic Office.
$$
AMZ452-454-170145-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...
.TODAY...North winds 15 to 20 knots, diminishing to around 15
knots this afternoon. Seas 5 to 7 feet, occasionally to 9 feet,
diminishing to 4 to 6 feet, occasionally to 8 feet late this
morning. Wave Detail: Northeast 6 feet at 10 seconds.
Intracoastal waters becoming a moderate chop.
.TONIGHT...Northeast winds 10 to 15 knots, becoming east northeast
5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: Northeast 5 feet at 10 seconds. Intracoastal
waters a moderate chop. A slight chance of showers.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 8 seconds. Intracoastal waters mostly smooth.
.WEDNESDAY NIGHT...East southeast winds 5 to 10 knots. Seas 3 to 4
feet, occasionally to 5 feet. Wave Detail: East 4 feet at 9
seconds. Intracoastal waters mostly smooth. A chance of showers
with a slight chance of thunderstorms after midnight.
.THURSDAY...Southeast winds 5 to 10 knots, becoming south during
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 4 feet at 9 seconds. Intracoastal waters mostly
smooth. A chance of showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
around 15 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 9 seconds and southwest 2
feet at 4 seconds. Intracoastal waters becoming a moderate chop.
A chance of showers.
.FRIDAY...West winds around 15 knots, becoming northwest during
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet.
Intracoastal waters a moderate chop.
.FRIDAY NIGHT...North winds around 15 knots, becoming northeast 10
to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5
feet. Intracoastal waters becoming a light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
during the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Intracoastal waters mostly smooth.
Winds and waves higher in and near thunderstorms.
$$
AMZ450-170145-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
539 AM EST Tue Dec 16 2025
.TODAY...North winds 10 to 15 knots, diminishing to around 10
knots this afternoon. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: East 5 feet at 10 seconds. Intracoastal waters a
light chop.
.TONIGHT...North northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds.
Intracoastal waters mostly smooth.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast during
the afternoon. Seas around 3 feet. Wave Detail: East 3 feet at 10
seconds. Intracoastal waters mostly smooth.
.WEDNESDAY NIGHT...East northeast winds 5 to 10 knots, becoming
east around 5 knots after midnight. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters mostly
smooth. A chance of showers after midnight.
.THURSDAY...Southeast winds around 5 knots, becoming south 5 to 10
knots during the afternoon. Seas 2 to 3 feet. Wave Detail: East 3
feet at 10 seconds. Intracoastal waters mostly smooth. A chance
of showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds around 10 knots, becoming southwest
10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 4 feet at 9 seconds and southwest 2
feet at 3 seconds. Intracoastal waters a light chop. A chance of
showers.
.FRIDAY...West winds 10 to 15 knots, becoming northwest around 10
knots during the afternoon. Seas 2 to 4 feet, occasionally to 5
feet.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots, becoming north
around 10 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
during the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Intracoastal waters mostly smooth.
Winds and waves higher in and near thunderstorms.
$$
AMZ472-474-170145-
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-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING...
.TODAY...North northeast winds around 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet, diminishing to 4 to 6 feet, occasionally
to 8 feet, late this morning. Wave Detail: Northeast 7 feet at 10
seconds. A slight chance of showers.
.TONIGHT...East northeast winds 10 to 15 knots, becoming southeast
after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: East 5 feet at 9 seconds. A chance of showers.
.WEDNESDAY...South winds 5 to 10 knots, becoming east around 5
knots during the afternoon. Seas 4 to 5 feet, occasionally to 6
feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of
showers.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5
feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 9
seconds. A slight chance of showers in the evening, then a chance
of showers with a slight chance of thunderstorms after midnight.
.THURSDAY...South winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 5 feet at 9
seconds. Showers likely with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
15 to 20 knots after midnight. Seas 5 to 6 feet, occasionally to 8
feet. Wave Detail: East 5 feet at 9 seconds and southwest 3 feet
at 4 seconds. A chance of showers.
.FRIDAY...West winds 15 to 20 knots, becoming northwest around 15
knots during the afternoon. Seas 4 to 6 feet, occasionally to 8
feet. A slight chance of showers in the morning.
.FRIDAY NIGHT...North northwest winds around 15 knots, becoming
north northeast 10 to 15 knots after midnight. Seas 3 to 4 feet,
occasionally to 5 feet.
.SATURDAY...Northeast winds around 10 knots, becoming east 5 to 10
knots during the afternoon. Seas 3 to 4 feet, occasionally to 5
feet.
Winds and seas higher in and near thunderstorms.
$$
AMZ470-170145-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
539 AM EST Tue Dec 16 2025
...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 9 AM EST THIS
MORNING...
.TODAY...North northeast winds around 15 knots, becoming northeast
around 10 knots this afternoon. Seas 5 to 6 feet, occasionally to
8 feet, diminishing to 4 to 5 feet, occasionally to 7 feet late
this morning. Wave Detail: East 6 feet at 10 seconds.
.TONIGHT...Northeast winds 5 to 10 knots, becoming east northeast
around 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 9 seconds. A slight chance of
showers after midnight.
.WEDNESDAY...East southeast winds around 10 knots, becoming north
around 5 knots during the afternoon. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. A
slight chance of showers.
.WEDNESDAY NIGHT...East northeast winds 5 to 10 knots, becoming
southeast around 10 knots after midnight. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. A
slight chance of showers in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.
.THURSDAY...Southeast winds around 10 knots, becoming south 5 to
10 knots during the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Southeast 5 feet at 9 seconds. Showers
likely with a slight chance of thunderstorms.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming southwest
15 to 20 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Southeast 5 feet at 9 seconds and southwest
3 feet at 4 seconds. A chance of showers.
.FRIDAY...West winds 15 to 20 knots, becoming northwest around 15
knots during the afternoon. Seas 4 to 6 feet, occasionally to 8
feet.
.FRIDAY NIGHT...Northwest winds around 15 knots, becoming north 10
to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6
feet.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east northeast
around 5 knots during the afternoon. Seas 3 to 4 feet,
occasionally to 5 feet.
Winds and seas higher in and near thunderstorms.
$$