701
FZUS52 KJAX 290647
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
247 AM EDT Fri Aug 29 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.

AMZ400-292200-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
247 AM EDT Fri Aug 29 2025

.SYNOPSIS...

A nearly stationary frontal boundary will remain situated over the
northeast Florida waters through the weekend as high pressure builds
southeastward from the Great Lakes towards the Mid-Atlantic states
and New England. Showers and a few embedded thunderstorms may
increase in coverage overnight through the early morning hours on
Friday from south to north across our local waters. Another round
of potentially strong thunderstorms may impact the northeast
Florida waters on Friday afternoon and evening, with stronger
storms capable of producing strong wind gusts, waterspouts, and
frequent lightning strikes. Waves of showers and thunderstorms
will likely impact our local waters this weekend through the
middle portion of next week as the frontal boundary remains stuck
over our area. Outside of thunderstorm activity, breezy onshore
winds are expected to develop from Sunday afternoon through at
least Tuesday as high pressure wedges down the southeastern
seaboard.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 28, 2025 at 1200 UTC...

 36 nautical miles east of Flagler Beach.
 46 nautical miles east of Saint Augustine Beach.
 56 nautical miles east of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-292200-
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-
247 AM EDT Fri Aug 29 2025

.TODAY...East northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 5 seconds. Intracoastal waters a
light chop. A chance of showers and thunderstorms this morning,
then showers and thunderstorms likely this afternoon. A few storms
late this afternoon could become strong or severe, with strong
wind gusts, frequent lightning strikes, and waterspouts possible.
.TONIGHT...East winds 10 to 15 knots, becoming southeast 5 to 10
knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet
at 5 seconds. Intracoastal waters becoming mostly smooth. A
chance of showers and thunderstorms. A few storms early this
evening could become strong to severe, with strong wind gusts,
frequent lightning strikes, and waterspouts possible.
.SATURDAY...East northeast winds around 10 knots. Seas around 2
feet. Wave Detail: East 2 feet at 5 seconds. Intracoastal waters
a light chop. Showers and thunderstorms likely.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 5 seconds. Intracoastal waters mostly
smooth. Showers and thunderstorms likely.
.SUNDAY...Northeast winds increasing to around 15 knots. Seas 3
to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6
seconds. Intracoastal waters becoming a moderate chop. Showers
and thunderstorms likely.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds.
Intracoastal waters choppy. Showers and thunderstorms likely in
the evening, then a chance of showers and thunderstorms after
midnight.
.MONDAY THROUGH TUESDAY...Northeast winds 15 to 20 knots. Seas
4 to 5 feet, occasionally to 6 feet. Intracoastal waters choppy.
Showers and thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-292200-
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-
247 AM EDT Fri Aug 29 2025

.TODAY...East northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 3 feet at 6 seconds. A chance of showers
and thunderstorms this morning, then showers and thunderstorms
likely this afternoon. A few storms late this afternoon could
become strong or severe, with strong wind gusts, frequent
lightning strikes, and waterspouts possible.
.TONIGHT...East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3
feet at 5 seconds. Showers and thunderstorms likely. A few storms
early this evening could become strong to severe, with strong
wind gusts, frequent lightning strikes, and waterspouts possible.
.SATURDAY...East northeast winds around 10 knots. Seas 2 to 3
feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 8
seconds. Showers and thunderstorms likely.
.SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: East 2 feet at 5 seconds and east 2 feet at
8 seconds. Showers and thunderstorms likely.
.SUNDAY AND SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
7 seconds. Showers and thunderstorms likely.
.MONDAY THROUGH TUESDAY...Northeast winds 15 to 20 knots. Seas
5 to 6 feet, occasionally to 7 feet. Wave Detail: Northeast 5
feet at 7 seconds. Showers and thunderstorms likely.

Winds and seas higher in and near thunderstorms.

$$