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| NWS Forecast for: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM (AMZ450) Issued by: National Weather Service Jacksonville, FL Last Update: 521 AM EDT Sun Aug 9 2026 |  |
| Today: South winds 5 to 10 knots, becoming southeast 10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave detail: east 3 feet at 8 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms this afternoon. Tonight: South winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 8 seconds. Intracoastal waters a moderate chop. Monday: South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: east 2 feet at 7 seconds. Intracoastal waters a moderate chop. Monday Night: South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds and south 2 feet at 4 seconds. Intracoastal waters a moderate chop. Tuesday: Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave detail: southeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. Tuesday Night: South winds 10 to 15 knots, becoming southwest after midnight. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. Wednesday: Southwest winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. Thursday: Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. winds and waves higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM (AMZ450) | |
Visit your local NWS office at: https://www.weather.gov/jax |