FZUS52 KJAX 202229
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
529 PM EST Sat Dec 20 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.
AMZ400-211330-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
529 PM EST Sat Dec 20 2025
.SYNOPSIS...
High pressure will settle over the local waters for the rest of the
weekend, allowing for lighter winds and subsiding seas. A weak cold
front boundary will approach and cross our region from the north on
Monday as strong high pressure builds to the north and wedges down
the southeastern seaboard and another weak coastal trough develops.
This feature may develop showers over our local waters early next
week, as well as Small Craft Advisory conditions beginning early
Monday as northeasterly winds surge. Elevated seas area likely to
persist through Tuesday as onshore winds only gradually subside.
.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.
$$
AMZ450-452-454-211330-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
529 PM EST Sat Dec 20 2025
.TONIGHT...North winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters light chop.
Patchy fog after midnight.
.SUNDAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 4 seconds.
Intracoastal waters a moderate chop. Patchy fog in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, increasing to
20 to 25 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet, building to 4 to 6 feet, occasionally to 8 feet after
midnight. Wave Detail: Northeast 3 feet at 4 seconds and east
2 feet at 9 seconds, becoming northeast 5 feet at 5 seconds and
east 2 feet at 10 seconds. Intracoastal waters rough.
.MONDAY...Northeast winds 20 to 25 knots with gusts up to
35 knots, diminishing to 15 to 20 knots in the afternoon. Seas
5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
7 feet at 6 seconds and east 6 feet at 10 seconds. Intracoastal
waters rough.
.MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: East 6 feet at 8 seconds. Intracoastal
waters choppy.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 9 seconds.
Intracoastal waters light chop.
.TUESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 3 to 5 feet, occasionally to 6 feet. Intracoastal
waters smooth.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters light
chop.
$$
AMZ470-472-474-211330-
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-
529 PM EST Sat Dec 20 2025
.TONIGHT...North winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds.
.SUNDAY...North winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 4 seconds
and east 3 feet at 9 seconds.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, increasing to
20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight. Wave Detail: Northeast 4 feet at 4 seconds and east
3 feet at 9 seconds, becoming northeast 6 feet at 6 seconds and
east 3 feet at 10 seconds.
.MONDAY...Northeast winds 20 to 25 knots with gusts up to
35 knots, becoming east 15 to 20 knots in the afternoon. Seas
6 to 8 feet, occasionally to 10 feet. Wave Detail: East 8 feet at
10 seconds and northeast 7 feet at 7 seconds. A slight chance of
showers in the afternoon.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 8 seconds. A
slight chance of showers.
.TUESDAY...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 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.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
3 to 5 feet, occasionally to 6 feet.
$$
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
529 PM EST Sat Dec 20 2025
Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
AMZ400-211330-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
529 PM EST Sat Dec 20 2025
.SYNOPSIS...
High pressure will settle over the local waters for the rest of the
weekend, allowing for lighter winds and subsiding seas. A weak cold
front boundary will approach and cross our region from the north on
Monday as strong high pressure builds to the north and wedges down
the southeastern seaboard and another weak coastal trough develops.
This feature may develop showers over our local waters early next
week, as well as Small Craft Advisory conditions beginning early
Monday as northeasterly winds surge. Elevated seas area likely to
persist through Tuesday as onshore winds only gradually subside.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 20, 2025 at 0000 UTC...
50 nautical miles east of Flagler Beach.
58 nautical miles east of Saint Augustine Beach.
70 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-211330-
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-
529 PM EST Sat Dec 20 2025
.TONIGHT...North winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters light chop.
Patchy fog after midnight.
.SUNDAY...North winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 4 seconds.
Intracoastal waters a moderate chop. Patchy fog in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, increasing to
20 to 25 knots after midnight. Seas 2 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 rough.
.MONDAY...Northeast winds 20 to 25 knots with gusts up to
35 knots, diminishing to 15 to 20 knots in the afternoon. Seas
5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
7 feet at 6 seconds and east 6 feet at 10 seconds. Intracoastal
waters rough.
.MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: East 6 feet at 8 seconds. Intracoastal
waters choppy.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 4 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 after
midnight. Seas 3 to 5 feet, occasionally to 6 feet. 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.
$$
AMZ470-472-474-211330-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
529 PM EST Sat Dec 20 2025
.TONIGHT...North winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds.
.SUNDAY...North winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 4 seconds
and east 3 feet at 9 seconds.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, increasing to
20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight. Wave Detail: Northeast 4 feet at 4 seconds and east
3 feet at 9 seconds, becoming northeast 6 feet at 6 seconds and
east 3 feet at 10 seconds.
.MONDAY...Northeast winds 20 to 25 knots with gusts up to
35 knots, becoming east 15 to 20 knots in the afternoon. Seas
6 to 8 feet, occasionally to 10 feet. Wave Detail: East 8 feet at
10 seconds and northeast 7 feet at 7 seconds. A slight chance of
showers in the afternoon.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 8 seconds. A
slight chance of showers.
.TUESDAY...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: East 7 feet at 9 seconds.
.TUESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 4 to 6 feet, occasionally to 8 feet.
.WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas
3 to 5 feet, occasionally to 6 feet.
$$