461
FZUS52 KJAX 181321
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
921 AM EDT Tue Jun 18 2024

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.

AMZ400-182130-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
921 AM EDT Tue Jun 18 2024

.SYNOPSIS...
Strong high pressure will remain anchored off coastal New England
through Thursday maintaining small craft advisory onshore winds
and waves across the coastal waters. Meanwhile, a trough situated
to the northeast of the Bahamas will be steered westward towards
the southeastern seaboard late this week, with weak low pressure
possibly developing as this system traverses the Gulf Stream
waters. Showers and thunderstorms are expected to increase in
coverage late this week and through the upcoming weekend across
our local waters. High pressure will weaken late this week as it
sinks slowly southward towards Bermuda, with the axis of this
surface ridge extending across our area during the upcoming
weekend. Winds and seas will gradually diminish as prevailing
winds shift to southeasterly on Saturday and then southerly by
Sunday.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jun 13, 2024 at 1200 UTC...

 62 nautical miles east northeast of Flagler Beach.
 66 nautical miles east of Saint Augustine Beach.
 75 nautical miles east of Jacksonville Beach.
 93 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-182130-
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-
921 AM EDT Tue Jun 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds.
Intracoastal waters choppy. A slight chance of showers.
.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 7 seconds.
Intracoastal waters choppy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight.
.WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds.
Intracoastal waters choppy. A chance of showers in the morning,
then showers with a slight chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 8 seconds.
Intracoastal waters choppy. Showers likely with a slight chance
of thunderstorms in the evening, then a chance of showers after
midnight.
.THURSDAY AND THURSDAY NIGHT...Northeast winds 15 to 20 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East
6 feet at 8 seconds. Intracoastal waters choppy. Showers likely
with a slight chance of thunderstorms.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 10 seconds
and northeast 2 feet at 7 seconds. Intracoastal waters a moderate
chop. Showers through the day. A slight chance of thunderstorms.
A chance of showers in the evening, then a slight chance of
showers after midnight.
.SATURDAY...East winds 5 to 10 knots, becoming south. Seas 3 to
4 feet, occasionally to 5 feet. Intracoastal waters light chop. A
chance of showers in the morning. A slight chance of
thunderstorms. Showers likely in the afternoon, then a chance of
showers in the evening. A slight chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-182130-
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-
921 AM EDT Tue Jun 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 7 seconds. A
slight chance of showers.
.TONIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: East 7 feet at 7 seconds. A chance of
showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds.
Showers likely in the morning, then showers with a slight chance
of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds around 20 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds.
Showers with a slight chance of thunderstorms in the evening,
then showers likely after midnight.
.THURSDAY AND THURSDAY NIGHT...Northeast winds 15 to 20 knots.
Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: East
7 feet at 9 seconds and northeast 2 feet at 7 seconds. Showers
with a slight chance of thunderstorms.
.FRIDAY...East winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to
6 feet after midnight. Wave Detail: East 7 feet at 9 seconds and
northeast 2 feet at 8 seconds, becoming east 5 feet at 9 seconds
and northeast 2 feet at 8 seconds. Showers with a slight chance
of thunderstorms, then a chance of showers after midnight.
.SATURDAY...Southeast winds 5 to 10 knots, becoming south. Seas
3 to 4 feet, occasionally to 5 feet. Showers likely through the
day. A slight chance of thunderstorms. A chance of showers
through the night.

Winds and seas higher in and near thunderstorms.

$$