317
FZUS52 KJAX 200047
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
847 PM EDT Sat Jul 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.

AMZ400-201600-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
847 PM EDT Sat Jul 19 2025

.SYNOPSIS...

High pressure centered over our local waters this evening will
shift westward on Sunday as troughing develops over the
southeastern states. Showers and thunderstorms may develop on
Sunday evening and night, especially over the Georgia waters.
Troughing along the southeastern seaboard will continue to sharpen
early in the upcoming week, resulting in increasing chances for
showers and thunderstorms across our local waters. Strong to
isolated severe thunderstorms will be also possible through
midweek. Weak low pressure may develop near our local waters
towards midweek as high pressure over New England wedges down the
southeastern seaboard, creating a brief increase in northeasterly
winds through Wednesday evening. A northeasterly swell may also
build seas to Caution levels offshore later in the upcoming week.
Low pressure will then shift to the west of our local waters by
Wednesday night and Thursday, allowing surface winds to shift to
southeasterly and then southerly by late in the week.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 17, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 68 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-201600-
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-
847 PM EDT Sat Jul 19 2025

.REST OF TONIGHT...South winds 10 to 15 knots, becoming west
southwest around 10 knots after midnight. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 8 seconds and south 2 feet at 4
seconds. Intracoastal waters a light chop.
.SUNDAY...West winds around 10 knots, becoming southeast 10 to 15
knots in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 8 seconds. Intracoastal waters a light chop.
.SUNDAY NIGHT...West southwest winds 10 to 15 knots. Seas 2 to 3
feet. Wave Detail: Southeast 2 feet at 4 seconds and southeast 2
feet at 8 seconds. Intracoastal waters a light chop. A chance of
showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming southeast around 10
knots in the afternoon. Seas around 2 feet. Wave Detail: South 2
feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal
waters a light chop. A chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters
mostly smooth. A chance of showers and thunderstorms.
.TUESDAY...West winds 5 to 10 knots, becoming east around 10 knots
in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2
feet at 8 seconds. Intracoastal waters becoming a light chop. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming northeast
after midnight. Seas around 2 feet. Intracoastal waters mostly
smooth. Showers and thunderstorms likely in the evening, then a
chance of showers and thunderstorms after midnight.
.WEDNESDAY AND WEDNESDAY NIGHT...Northeast winds 10 to 15 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters
a light chop. Showers and thunderstorms likely.
.THURSDAY...East winds 10 to 15 knots, becoming southeast during
the afternoon. Seas 3 to 5 feet, occasionally to 6 feet.
Intracoastal waters becoming a light chop. Showers and
thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-201600-
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-
847 PM EDT Sat Jul 19 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 8 seconds and south 2 feet at 4
seconds.
.SUNDAY...West southwest winds 10 to 15 knots, becoming south in
the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at
4 seconds and southeast 2 feet at 8 seconds.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 8 seconds and south 2 feet at
4 seconds. A chance of showers and thunderstorms.
.MONDAY...West winds 10 to 15 knots, becoming southwest 5 to 10
knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2
feet at 4 seconds and southeast 2 feet at 8 seconds. A chance of
showers and thunderstorms.
.MONDAY NIGHT...Southwest winds around 10 knots. Seas around 2
feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet
at 8 seconds. A chance of showers and thunderstorms.
.TUESDAY AND TUESDAY NIGHT...East winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds and southeast 2
feet at 8 seconds. Showers and thunderstorms likely.
.WEDNESDAY AND WEDNESDAY NIGHT...Northeast winds 10 to 15 knots.
Seas building 4 to 6 feet, occasionally to 8 feet. Showers of
thunderstorms likely.
.THURSDAY...East winds 10 to 15 knots, becoming southeast. Seas 4
to 6 feet, occasionally to 8 feet. Showers and thunderstorms
likely.

Winds and seas higher in and near thunderstorms.

$$