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coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
846 pm edt fri sep 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.


amz450-452-454-131600-
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-
846 pm edt fri sep 12 2025

...small craft advisory in effect through sunday evening...

.rest of tonight...north northeast winds increasing to around 20 
knots. seas 4 to 6 feet, occasionally to 8 feet. wave detail: 
northeast 5 feet at 7 seconds. intracoastal waters becoming rough.
a chance of showers with a slight chance of thunderstorms. 
.saturday...north northeast winds 20 to 25 knots, with occasional
gusts to gale force possible. seas 5 to 7 feet, occasionally to 9
feet. wave detail: northeast 7 feet at 7 seconds. intracoastal 
waters rough. showers likely with a chance of thunderstorms. 
.saturday night...northeast winds 20 to 25 knots. occasional gusts 
to gale force possible in the evening. seas 5 to 7 feet, 
occasionally to 9 feet. wave detail: northeast 7 feet at 8 
seconds. intracoastal waters rough. showers likely with a chance 
of thunderstorms.
.sunday...northeast winds 20 to 25 knots. seas 5 to 7 feet, 
occasionally to 9 feet. wave detail: northeast 6 feet at 8 
seconds and northeast 5 feet at 5 seconds. intracoastal waters 
rough. showers likely with a chance of thunderstorms.
.sunday night...northeast winds 20 to 25 knots, diminishing to
around 15 knots after midnight. seas 4 to 6 feet, occasionally to
8 feet. wave detail: northeast 5 feet at 5 seconds and northeast
5 feet at 8 seconds. intracoastal waters becoming choppy. a 
chance of showers with a slight chance of thunderstorms. 
.monday and monday night...north northeast winds 15 to 20 knots. 
seas 4 to 5 feet, occasionally to 6 feet. wave detail: northeast 4
feet at 5 seconds and northeast 4 feet at 8 seconds. intracoastal
waters choppy. a chance of showers and thunderstorms.
.tuesday through wednesday...northeast winds around 15 knots. 
seas 3 to 5 feet, occasionally to 6 feet. intracoastal waters 
a moderate chop. a slight chance of showers and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$