| 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: 842 AM EDT Sun Oct 19 2025 | |
| Rest Of Today: South winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 4 feet at 12 seconds and southeast 3 feet at 5 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms this afternoon. Tonight: Southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: south 4 feet at 5 seconds and east 3 feet at 13 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the evening. Monday: North winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: northeast 5 feet at 11 seconds and southeast 4 feet at 5 seconds. Intracoastal waters choppy. Monday Night: Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: northeast 4 feet at 8 seconds. Intracoastal waters light chop. Tuesday: Northeast winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave detail: northeast 3 feet at 8 seconds. Intracoastal waters light chop. Tuesday Night: South winds 5 to 10 knots, becoming west after midnight. Seas 2 to 3 feet. Wave detail: east 3 feet at 8 seconds and southwest 2 feet at 3 seconds. Intracoastal waters light chop. Wednesday Through Thursday: Northeast 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 |