Tidal Flooding Continues - Updated Briefing
Coastal Flood Warnings have been issued within portions of the St. Johns River basin south of downtown Jacksonville. Dangerous marine and surf conditions will continue through Tuesday. Strengthening onshore winds beginning on Thursday may result in an expansion of Coastal Flood Warnings and Advisories. Please monitor this briefing for the latest updates this weekend and early next week. Read More >
| NWS Forecast for: Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM (AMZ452) Issued by: National Weather Service Jacksonville, FL Last Update: 702 AM EDT Wed Oct 8 2025 | |
Today: Northeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 9 seconds. Intracoastal waters a moderate chop. A chance of showers, mainly this morning. Tonight: Northeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 8 seconds. Intracoastal waters choppy. A slight chance of showers. Thursday: Northeast winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet in the afternoon. Wave detail: northeast 6 feet at 8 seconds, becoming northeast 8 feet at 6 seconds. Intracoastal waters very rough. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Thursday Night: Northeast winds 25 to 30 knots with gusts up to 45 knots. Seas 7 to 10 feet, occasionally to 13 feet, building to 9 to 11 feet, occasionally to 14 feet after midnight. Wave detail: northeast 10 feet at 7 seconds, becoming northeast 11 feet at 8 seconds. Intracoastal waters very rough. A chance of thunderstorms. Showers. Friday: Northeast winds 25 to 30 knots with gusts up to 45 knots. Seas 9 to 11 feet, occasionally to 14 feet. Wave detail: northeast 11 feet at 8 seconds. Intracoastal waters very rough. A chance of thunderstorms. Showers. Friday Night: Northeast winds 25 to 30 knots with gusts up to 45 knots. Seas 10 to 12 feet, occasionally to 15 feet. Wave detail: northeast 12 feet at 9 seconds. Intracoastal waters very rough. A chance of showers. A chance of thunderstorms, mainly in the evening. Saturday: North winds 25 to 30 knots. Seas 9 to 12 feet, occasionally to 15 feet. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms through the day, then a slight chance of showers in the evening. Sunday: North winds 20 to 25 knots. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 6 to 8 feet, occasionally to 10 feet after midnight. Intracoastal waters rough. winds and waves higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM (AMZ452) | |
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