491
FZUS52 KJAX 130020
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
820 PM EDT Sat Jul 12 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.

AMZ400-131530-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
820 PM EDT Sat Jul 12 2025

.SYNOPSIS...

Atlantic high pressure extending its axis westward across the
Florida peninsula will shift southward on Sunday as a weak trough
develops near the Gulf Stream waters. This trough will then
slowly migrate westward across our local waters on Monday, with
this feature shifting into the northeast Gulf of Mexico by
Tuesday. Showers and thunderstorms will likely increase across our
local waters beginning later on Monday and Tuesday, with
prevailing winds shifting to southerly by Tuesday as this trough
slowly organizes over the eastern Gulf of Mexico towards midweek.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 10, 2025 at 1200 UTC...

 50 nautical miles east of Flagler Beach.
 59 nautical miles east of Saint Augustine Beach.
 70 nautical miles east of Jacksonville Beach.
 95 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-131530-
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-
820 PM EDT Sat Jul 12 2025

.REST OF TONIGHT...South winds 10 to 15 knots, becoming southwest
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 8 seconds. Intracoastal waters a light chop. A slight chance
of showers and thunderstorms this evening.
.SUNDAY...West northwest winds around 10 knots, becoming
east 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. A chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots, becoming west
5 to 10 knots after midnight. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 8 seconds. Intracoastal waters becoming mostly
smooth. A slight chance of showers and thunderstorms in the
evening.
.MONDAY...North winds 5 to 10 knots, becoming east around 10 knots
in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet
at 8 seconds. Intracoastal waters becoming a light chop. A chance
of showers and thunderstorms, mainly during the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 9 seconds. Intracoastal waters mostly
smooth. A chance of showers and thunderstorms, mainly in the
evening.
.TUESDAY...Southeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a
light chop. A chance of showers and thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 3
feet. Intracoastal waters a light chop. A chance of showers and
thunderstorms.
.WEDNESDAY THROUGH THURSDAY...South winds 10 to 15 knots. Seas
2 to 3 feet. Intracoastal waters a light chop. Showers and
thunderstorms likely.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-131530-
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-
820 PM EDT Sat Jul 12 2025

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

Winds and seas higher in and near thunderstorms.

$$