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coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
808 pm edt sun sep 20 2026

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.


amz450-452-454-211515-
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-
808 pm edt sun sep 20 2026

.rest of tonight...east winds around 5 knots, becoming north.
seas around 2 feet. wave detail: east 2 feet at 8 seconds.
intracoastal waters smooth. a chance of showers and
thunderstorms. 
.monday...north winds 5 to 10 knots, becoming northeast in the
afternoon. seas around 2 feet. wave detail: east 2 feet at
8 seconds. intracoastal waters light chop. a slight chance of
thunderstorms. a chance of showers, mainly in the morning. 
.monday night...east winds 5 to 10 knots, becoming south after
midnight. seas around 2 feet. wave detail: east 2 feet at
8 seconds. intracoastal waters light chop. a slight chance of
thunderstorms. a slight chance of showers in the evening, then a
chance of showers after midnight. 
.tuesday...northeast winds 5 to 10 knots. seas around 2 feet.
wave detail: east 2 feet at 8 seconds. intracoastal waters light
chop. a chance of showers. a slight chance of thunderstorms in
the morning, then a chance of thunderstorms in the afternoon. 
.tuesday night...east winds 5 to 10 knots. seas around 2 feet.
wave detail: east 2 feet at 7 seconds. intracoastal waters light
chop. a slight chance of thunderstorms. a slight chance of
showers in the evening, then a chance of showers after midnight. 
.wednesday...northeast winds 10 to 15 knots. seas 2 to 3 feet.
wave detail: northeast 3 feet at 5 seconds. intracoastal waters a
moderate chop. showers likely. a slight chance of thunderstorms
in the morning, then a chance of thunderstorms in the afternoon. 
.wednesday night...northeast winds 10 to 15 knots, increasing to
15 to 20 knots after midnight. seas 2 to 4 feet, occasionally to
5 feet. intracoastal waters choppy. a chance of showers. a chance
of thunderstorms, mainly in the evening. 
.thursday...northeast winds 25 to 30 knots. seas 4 to 6 feet,
occasionally to 8 feet, building to 6 to 9 feet, occasionally to
11 feet. intracoastal waters very rough. showers likely with a
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon. a chance of showers through the
night. a slight chance of thunderstorms through the night. a
slight chance of showers after midnight. 
.friday...north winds 25 to 30 knots, becoming northeast 20 to
25 knots. seas 6 to 9 feet, occasionally to 11 feet, subsiding to
5 to 7 feet, occasionally to 9 feet after midnight. intracoastal
waters very rough. a chance of showers through the day. a slight
chance of thunderstorms in the afternoon, then a slight chance of
showers in the evening. 

winds and waves higher in and near thunderstorms.

$$