FZUS52 KJAX 211241
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
741 AM EST Sun Dec 21 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.
AMZ400-220345-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
741 AM EST Sun Dec 21 2025
.SYNOPSIS...
High pressure continues fair maritime conditions today with
northerly breezes developing as a cold front approaches. That front
will push through the waters after midnight with a surge of
northeasterly winds following promptly behind it. Northeasterly
winds and gusts will be strong enough to support a Small Craft
Advisory late tonight through Tuesday. Seas will subside late
Tuesday as a ridge of high pressure expands over the waters. Fair
maritime conditions are expected Wednesday onward as stagnant high
pressure remains stuck in place across the waters through the end of
the week.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 20, 2025 at 0000 UTC...
50 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.
$$
AMZ452-454-220345-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...
.TODAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
this afternoon. Seas around 3 feet. Wave Detail: East 3 feet at
9 seconds and north 2 feet at 4 seconds. Intracoastal waters a
moderate chop. Patchy dense fog this morning with visibility 1 NM
or less.
.TONIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet, building to 4 to 6 feet, occasionally to 8 feet after
midnight. Wave Detail: Northeast 3 feet at 4 seconds and east
2 feet at 9 seconds, becoming northeast 5 feet at 5 seconds and
east 2 feet at 10 seconds. Intracoastal waters choppy.
.MONDAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds and east 2 feet at 10 seconds. Intracoastal waters
choppy.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 10 seconds
and northeast 5 feet at 7 seconds. Intracoastal waters a moderate
chop.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 9 seconds.
Intracoastal waters light chop.
.TUESDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.
Wave Detail: East 5 feet at 9 seconds. Intracoastal waters
smooth.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters light
chop.
$$
AMZ470-472-474-220345-
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-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY MORNING...
.TODAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 4 seconds.
Patchy dense fog this morning with visibility 1 NM or less.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet, building to 4 to 6 feet, occasionally to
8 feet after midnight. Wave Detail: Northeast 3 feet at 4 seconds
and east 3 feet at 9 seconds, becoming northeast 5 feet at
5 seconds and east 3 feet at 10 seconds.
.MONDAY...Northeast winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 10 seconds
and northeast 6 feet at 6 seconds. A slight chance of showers in
the afternoon.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
7 seconds. A slight chance of showers in the evening.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 9 seconds.
.TUESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
East 6 feet at 9 seconds.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
3 to 5 feet, occasionally to 6 feet.
$$
AMZ450-220345-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...
.TODAY...North winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters smooth.
Areas of dense fog this morning with visibility 1 NM or less.
.TONIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet after midnight. Wave Detail:
Northeast 2 feet at 4 seconds and east 2 feet at 9 seconds,
becoming northeast 5 feet at 5 seconds and east 2 feet at
10 seconds. Intracoastal waters choppy.
.MONDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds and east 5 feet at 10 seconds. Intracoastal waters
choppy.
.MONDAY NIGHT...Northeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 8 seconds and northeast
2 feet at 4 seconds. Intracoastal waters a moderate chop.
.TUESDAY...Southeast winds around 5 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 9 seconds.
Intracoastal waters smooth.
.TUESDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 4 feet at 9 seconds. Intracoastal waters smooth.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
2 to 3 feet. Intracoastal waters light chop.
$$
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
741 AM EST Sun Dec 21 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.
AMZ400-220345-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
741 AM EST Sun Dec 21 2025
.SYNOPSIS...
High pressure continues fair maritime conditions today with
northerly breezes developing as a cold front approaches. That front
will push through the waters after midnight with a surge of
northeasterly winds following promptly behind it. Northeasterly
winds and gusts will be strong enough to support a Small Craft
Advisory late tonight through Tuesday. Seas will subside late
Tuesday as a ridge of high pressure expands over the waters. Fair
maritime conditions are expected Wednesday onward as stagnant high
pressure remains stuck in place across the waters through the end of
the week.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 20, 2025 at 0000 UTC...
50 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.
$$
AMZ452-454-220345-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...
.TODAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
this afternoon. Seas around 3 feet. Wave Detail: East 3 feet at
9 seconds and north 2 feet at 4 seconds. Intracoastal waters a
moderate chop. Patchy dense fog this morning with visibility 1 NM
or less.
.TONIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet, building to 4 to 6 feet, occasionally to 8 feet after
midnight. Wave Detail: Northeast 3 feet at 4 seconds and east
2 feet at 9 seconds, becoming northeast 5 feet at 5 seconds and
east 2 feet at 10 seconds. Intracoastal waters choppy.
.MONDAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds and east 2 feet at 10 seconds. Intracoastal waters
choppy.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 10 seconds
and northeast 5 feet at 7 seconds. Intracoastal waters a moderate
chop.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 9 seconds.
Intracoastal waters light chop.
.TUESDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.
Wave Detail: East 5 feet at 9 seconds. Intracoastal waters
smooth.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters light
chop.
$$
AMZ470-472-474-220345-
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-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY MORNING...
.TODAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 4 seconds.
Patchy dense fog this morning with visibility 1 NM or less.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet, building to 4 to 6 feet, occasionally to
8 feet after midnight. Wave Detail: Northeast 3 feet at 4 seconds
and east 3 feet at 9 seconds, becoming northeast 5 feet at
5 seconds and east 3 feet at 10 seconds.
.MONDAY...Northeast winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 10 seconds
and northeast 6 feet at 6 seconds. A slight chance of showers in
the afternoon.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
7 seconds. A slight chance of showers in the evening.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 9 seconds.
.TUESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
East 6 feet at 9 seconds.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
3 to 5 feet, occasionally to 6 feet.
$$
AMZ450-220345-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
741 AM EST Sun Dec 21 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...
.TODAY...North winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters smooth.
Areas of dense fog this morning with visibility 1 NM or less.
.TONIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet after midnight. Wave Detail:
Northeast 2 feet at 4 seconds and east 2 feet at 9 seconds,
becoming northeast 5 feet at 5 seconds and east 2 feet at
10 seconds. Intracoastal waters choppy.
.MONDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds and east 5 feet at 10 seconds. Intracoastal waters
choppy.
.MONDAY NIGHT...Northeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 8 seconds and northeast
2 feet at 4 seconds. Intracoastal waters a moderate chop.
.TUESDAY...Southeast winds around 5 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 9 seconds.
Intracoastal waters smooth.
.TUESDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 4 feet at 9 seconds. Intracoastal waters smooth.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
2 to 3 feet. Intracoastal waters light chop.
$$