FZUS52 KJAX 190529
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1229 AM EST Fri Dec 19 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.
AMZ400-192000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1229 AM EST Fri Dec 19 2025
.SYNOPSIS...
Winds will shift to westerly by Friday morning as the cold front
moves through the waters, turning northwesterly and then northerly
Friday afternoon into Friday evening. High pressure will settle over
the local waters during the weekend, allowing for winds and seas to
diminish. A weakening cold frontal boundary will approach our region
from the north on Monday as strong high pressure builds to the north
and wedges down the southeastern seaboard as another coastal trough
develops over our local waters. This feature may develop showers
over our local waters early next week and Small Craft Advisory
conditions beginning early Monday as northeasterly winds surge, with
elevated seas likely persisting through Tuesday as onshore winds
only gradually subside.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 18, 2025 at 0000 UTC...
50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-192000-
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-
1229 AM EST Fri Dec 19 2025
...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 7 AM EST THIS
MORNING...
.REST OF TONIGHT...Southwest winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds and southwest 3 feet at 4 seconds. Intracoastal waters
choppy. Patchy fog late this evening. A chance of showers with a
slight chance of thunderstorms late this evening, then a slight
chance of showers.
.FRIDAY...West winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds and west 2 feet at 4 seconds. Intracoastal waters a
moderate chop.
.FRIDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds and
north 3 feet at 4 seconds. Intracoastal waters a moderate chop.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds
and east 3 feet at 9 seconds. Intracoastal waters light chop.
.SATURDAY NIGHT...Northeast winds around 5 knots, becoming
northwest after midnight. Seas 2 to 3 feet. Wave Detail: East
3 feet at 9 seconds. Intracoastal waters smooth.
.SUNDAY...North winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 3 seconds.
Intracoastal waters light chop.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Intracoastal waters choppy.
.MONDAY...Northeast winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Intracoastal waters rough. A slight
chance of showers through the night.
.TUESDAY...East winds 10 to 15 knots, becoming northeast around
5 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to
4 to 5 feet, occasionally to 6 feet after midnight. Intracoastal
waters a moderate chop.
Winds and waves higher in and near thunderstorms.
$$
AMZ470-472-474-192000-
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-
1229 AM EST Fri Dec 19 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...
.REST OF TONIGHT...Southwest winds 20 to 25 knots. Seas 6 to
8 feet, occasionally to 10 feet. Wave Detail: Southeast 7 feet at
8 seconds and southwest 4 feet at 5 seconds. A slight chance of
showers and thunderstorms.
.FRIDAY...West winds 15 to 20 knots. Seas 5 to 8 feet,
occasionally to 10 feet, subsiding to 5 to 6 feet, occasionally
to 8 feet in the afternoon. Wave Detail: Southeast 6 feet at
8 seconds and southwest 4 feet at 5 seconds, becoming southeast
5 feet at 9 seconds and west 3 feet at 4 seconds.
.FRIDAY NIGHT...North winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: North 4 feet at 5 seconds
and southeast 4 feet at 9 seconds.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds and
north 3 feet at 5 seconds.
.SATURDAY NIGHT...East 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.
.SUNDAY...North winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds.
.SUNDAY NIGHT...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.
.MONDAY...Northeast winds 20 to 25 knots, becoming east 15 to
20 knots. Seas 5 to 8 feet, occasionally to 10 feet, building to
7 to 9 feet, occasionally to 11 feet. A slight chance of showers.
.TUESDAY...East winds 10 to 15 knots, becoming northeast 5 to
10 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to
5 to 6 feet, occasionally to 8 feet after midnight. A slight
chance of showers in the morning.
Winds and seas higher in and near thunderstorms.
$$
CWFJAX
Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1229 AM EST Fri Dec 19 2025
Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.
Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.
AMZ400-192000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1229 AM EST Fri Dec 19 2025
.SYNOPSIS...
Winds will shift to westerly by Friday morning as the cold front
moves through the waters, turning northwesterly and then northerly
Friday afternoon into Friday evening. High pressure will settle over
the local waters during the weekend, allowing for winds and seas to
diminish. A weakening cold frontal boundary will approach our region
from the north on Monday as strong high pressure builds to the north
and wedges down the southeastern seaboard as another coastal trough
develops over our local waters. This feature may develop showers
over our local waters early next week and Small Craft Advisory
conditions beginning early Monday as northeasterly winds surge, with
elevated seas likely persisting through Tuesday as onshore winds
only gradually subside.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 18, 2025 at 0000 UTC...
50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-192000-
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-
1229 AM EST Fri Dec 19 2025
...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 7 AM EST THIS
MORNING...
.REST OF TONIGHT...Southwest winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds and southwest 3 feet at 4 seconds. Intracoastal waters
choppy. Patchy fog late this evening. A chance of showers with a
slight chance of thunderstorms late this evening, then a slight
chance of showers.
.FRIDAY...West winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds and west 2 feet at 4 seconds. Intracoastal waters a
moderate chop.
.FRIDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds and
north 3 feet at 4 seconds. Intracoastal waters a moderate chop.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds
and east 3 feet at 9 seconds. Intracoastal waters light chop.
.SATURDAY NIGHT...Northeast winds around 5 knots, becoming
northwest after midnight. Seas 2 to 3 feet. Wave Detail: East
3 feet at 9 seconds. Intracoastal waters smooth.
.SUNDAY...North winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 3 seconds.
Intracoastal waters light chop.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots, increasing to
15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Intracoastal waters choppy.
.MONDAY...Northeast winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Intracoastal waters rough. A slight
chance of showers through the night.
.TUESDAY...East winds 10 to 15 knots, becoming northeast around
5 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to
4 to 5 feet, occasionally to 6 feet after midnight. Intracoastal
waters a moderate chop.
Winds and waves higher in and near thunderstorms.
$$
AMZ470-472-474-192000-
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-
1229 AM EST Fri Dec 19 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...
.REST OF TONIGHT...Southwest winds 20 to 25 knots. Seas 6 to
8 feet, occasionally to 10 feet. Wave Detail: Southeast 7 feet at
8 seconds and southwest 4 feet at 5 seconds. A slight chance of
showers and thunderstorms.
.FRIDAY...West winds 15 to 20 knots. Seas 5 to 8 feet,
occasionally to 10 feet, subsiding to 5 to 6 feet, occasionally
to 8 feet in the afternoon. Wave Detail: Southeast 6 feet at
8 seconds and southwest 4 feet at 5 seconds, becoming southeast
5 feet at 9 seconds and west 3 feet at 4 seconds.
.FRIDAY NIGHT...North winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: North 4 feet at 5 seconds
and southeast 4 feet at 9 seconds.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds and
north 3 feet at 5 seconds.
.SATURDAY NIGHT...East 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.
.SUNDAY...North winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds.
.SUNDAY NIGHT...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.
.MONDAY...Northeast winds 20 to 25 knots, becoming east 15 to
20 knots. Seas 5 to 8 feet, occasionally to 10 feet, building to
7 to 9 feet, occasionally to 11 feet. A slight chance of showers.
.TUESDAY...East winds 10 to 15 knots, becoming northeast 5 to
10 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to
5 to 6 feet, occasionally to 8 feet after midnight. A slight
chance of showers in the morning.
Winds and seas higher in and near thunderstorms.
$$