739
FZUS52 KJAX 011643
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1243 PM EDT Fri Aug 1 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.

AMZ400-020745-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1243 PM EDT Fri Aug 1 2025

.SYNOPSIS...

Offshore flow will persist this afternoon with southerly wind surge
this evening with cautionary wind speeds expected across the waters
for a few hours. An offshore flow continues Saturday as a frontal
boundary approaches from the north and eventually stalls across the
local waters Sunday and Monday. Numerous thunderstorms are expected
to develop along the stalled front and push into and across the
coastal waters Saturday, Sunday and Monday. Frequent lightning,
strong winds, and small hail will be possible with strong or
marginally severe storms, especially across the Georgia waters
Saturday evening. High pressure will wedge in from the north as a
coastal trough lingers offshore from Tuesday onward, setting up a
predominant onshore flow.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 31, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 79 nautical miles east northeast of Jacksonville Beach.
 75 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-020745-
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-
1243 PM EDT Fri Aug 1 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 6 PM EDT THIS
EVENING THROUGH LATE TONIGHT...

.REST OF TODAY...Southwest winds around 10 knots, becoming south
15 to 20 knots late this afternoon. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 3 seconds. Intracoastal waters choppy. A
slight chance of showers and thunderstorms this afternoon.
.TONIGHT...Southwest winds 15 to 20 knots, becoming west 10 to 15
knots after midnight. Seas 2 to 3 feet. Wave Detail: South 3 feet
at 4 seconds. Intracoastal waters a moderate chop. A slight
chance of thunderstorms. A chance of showers, mainly in the
evening.
.SATURDAY...West winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet at
4 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming west
after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 4 seconds. Intracoastal waters light chop. A chance of
thunderstorms. Showers, mainly in the evening.
.SUNDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at
7 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas around 2 feet. Wave Detail: East 2 feet at
6 seconds. Intracoastal waters light chop. Showers likely with a
chance of thunderstorms in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.
.MONDAY THROUGH TUESDAY...South winds 5 to 10 knots. Seas 2 to
3 feet. Intracoastal waters light chop. Showers and thunderstorms
likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-020745-
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-
1243 PM EDT Fri Aug 1 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 6 PM EDT THIS
EVENING THROUGH LATE TONIGHT...

.REST OF TODAY...Southwest winds around 10 knots, becoming south
15 to 20 knots late this afternoon. Seas 2 to 3 feet. Wave Detail:
Southwest 3 feet at 4 seconds and east 2 feet at 9 seconds.
.TONIGHT...South winds 15 to 20 knots, becoming west 10 to 15
knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Wave Detail: South 3 feet at 5 seconds and east 2 feet at 9
seconds. A slight chance of thunderstorms. A chance of showers,
mainly in the evening.
.SATURDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at
4 seconds and east 2 feet at 8 seconds. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas around 2 feet. Wave Detail: East
2 feet at 8 seconds. Showers with thunderstorms likely in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at
8 seconds. Showers likely with a chance of thunderstorms.
.SUNDAY NIGHT...Southeast winds around 10 knots, becoming south
after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 3 feet at 8 seconds. A chance of thunderstorms.
Showers, mainly in the evening.
.MONDAY THROUGH TUESDAY...South winds 5 to 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. Showers likely with a chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$