757
FZUS52 KJAX 300655
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
255 AM EDT Sat Aug 30 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.

AMZ400-302200-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
255 AM EDT Sat Aug 30 2025

.SYNOPSIS...

A stationary front will linger across the northeast Florida waters
this weekend as strong high pressure over the Great Lakes begins to
wedge down the southeastern seaboard, sending a surge of
northeasterly winds and building seas across our local waters from
north to south on Sunday. Waves of showers and embedded
thunderstorms will impact our local waters this weekend, with
stronger storms capable of producing excessive lightning, strong
winds, and waterspouts. Northeasterly winds will likely peak near
Small Craft Advisory levels on Monday and will then gradually
weaken by late Tuesday and Wednesday. Widespread showers and
embedded thunderstorms will continue through midweek, with less
coverage expected ahead of an approaching cold front later in the
week. Prevailing winds will shift to offshore ahead of this
approaching cold front, allowing seas to gradually subside.


.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.

$$

AMZ450-452-454-302200-
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-
255 AM EDT Sat Aug 30 2025

.TODAY...Southeast winds 10 to 15 knots, becoming north northwest
around 10 knots this afternoon. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds. Intracoastal waters a light chop.
Showers and thunderstorms likely.
.TONIGHT...North winds 10 to 15 knots, becoming north northeast
after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5
seconds. Intracoastal waters a 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.
.SUNDAY...Northeast winds increasing to 15 to 20 knots. Seas
building to 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 7 seconds. Intracoastal waters becoming
choppy. Showers likely with a chance of thunderstorms.
.SUNDAY NIGHT THROUGH TUESDAY...Northeast winds 15 to 20 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast 5 feet at 7 seconds. Intracoastal waters choppy. Showers
likely with a chance of thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...Northeast winds around 15 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Intracoastal waters a
moderate chop. Showers likely with a slight chance of
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-302200-
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-
255 AM EDT Sat Aug 30 2025

.TODAY...Southeast winds 10 to 15 knots, becoming north northwest
late this afternoon. Seas around 3 feet. Wave Detail: East 3 feet
at 5 seconds and east 2 feet at 8 seconds. Showers and thunderstorms
likely.
.TONIGHT...North winds 10 to 15 knots, becoming north northeast
after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 5 seconds and east 2 feet at 8 seconds.
Showers likely with a chance of thunderstorms.
.SUNDAY...Northeast winds increasing to 15 to 20 knots. Seas
building to 4 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 5 feet at 7 seconds. Showers likely with a chance of
thunderstorms.
.SUNDAY NIGHT THROUGH TUESDAY...Northeast winds 15 to 20 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5
feet at 8 seconds and northeast 2 feet at 5 seconds. Showers
likely with a chance of thunderstorms.
.TUESDAY NIGHT AND WEDNESDAY...East northeast winds around 15
knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 5 feet at 8 seconds. Showers likely with a chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$