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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: 736 PM EDT Fri Jul 31 2026 | |
| Rest Of Tonight: South winds 10 to 15 knots, becoming southwest 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 3 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. Saturday: Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: south 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Saturday Night: Southwest winds 15 to 20 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 4 seconds. Intracoastal waters choppy. A chance of showers. A chance of thunderstorms, mainly in the evening. Sunday: Southwest winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Sunday Night: Southwest winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: south 4 feet at 6 seconds. Intracoastal waters choppy. A chance of showers. A chance of thunderstorms, mainly in the evening. Monday: Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: south 4 feet at 6 seconds. Intracoastal waters a moderate chop. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Monday Night: South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. Tuesday: South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the afternoon. A slight chance of thunderstorms in the evening. A slight chance of showers through the night. Wednesday: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A slight chance of showers and thunderstorms through the day. 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 |