Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
227 FZUS52 KJAX 031830 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 130 PM EST Wed Dec 3 2025 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. AMZ400-040930- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 130 PM EST Wed Dec 3 2025 .SYNOPSIS... High pressure will build over the southeastern states tonight and Thursday. Low pressure will then organize along the northern Gulf coast on Thursday night, with a warm front lifting northward across our local waters on Friday, accompanied by an increasing coverage of showers. Weak low pressure will move northeastward across southeastern Georgia on Friday evening, with this storm system`s cold front then crossing our local waters on Friday night and Saturday morning. A wave of low pressure will then develop along this front just south of the northeast Florida waters on Saturday night, keeping showers and a few embedded thunderstorms over our local waters through Sunday. Low pressure will then strengthen as it moves offshore on Sunday night and Monday, resulting in strengthening north northwesterly winds as rainfall ends, with Small Craft Advisories likely early next week. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Dec 02, 2025 at 1200 UTC... 37 nautical miles east northeast of Flagler Beach. 38 nautical miles east northeast of Saint Augustine Beach. 41 nautical miles east of Jacksonville Beach. 58 nautical miles east southeast of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-452-454-040930- 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- 130 PM EST Wed Dec 3 2025 .TONIGHT...Northwest winds around 10 knots, becoming north after midnight. Seas 2 to 3 feet. Wave Detail: North 2 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters a light chop. .THURSDAY...North winds 5 to 10 knots, becoming north northeast and increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 11 seconds and northeast 2 feet at 4 seconds. Intracoastal waters a light chop. .THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming east southeast 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 10 seconds and northeast 2 feet at 4 seconds. Intracoastal waters becoming mostly smooth. A slight chance of showers. .FRIDAY...South winds increasing to around 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 3 feet at 10 seconds. Intracoastal waters becoming a moderate chop. A slight chance of showers in the morning, then a chance of showers in the afternoon. .FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 3 feet at 10 seconds. Intracoastal waters a light chop. A chance of showers. .SATURDAY...Southwest winds 10 to 15 knots, becoming northwest around 15 knots during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 2 feet at 3 seconds and south 2 feet at 5 seconds. Intracoastal waters becoming a moderate chop. Showers with a slight chance of thunderstorms. .SATURDAY NIGHT...Northwest winds 10 to 15 knots, becoming north around 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 2 feet at 3 seconds and south 2 feet at 5 seconds. Intracoastal waters a moderate chop. Showers with a slight chance of thunderstorms. .SUNDAY AND SUNDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Intracoastal waters choppy. Showers in the morning, then a chance of showers after midnight. .MONDAY...North northwest winds increasing to 20 to 25 knots. Seas building to 5 to 6 feet, occasionally to 8 feet. Intracoastal waters becoming rough. A slight chance of showers in the morning. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-040930- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 130 PM EST Wed Dec 3 2025 .TONIGHT...Northwest winds 10 to 15 knots, becoming north around 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: North 2 feet at 4 seconds and northeast 2 feet at 7 seconds. .THURSDAY...North winds around 10 knots, becoming north northeast 10 to 15 knots during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 11 seconds and north 2 feet at 5 seconds. .THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming east southeast around 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 2 feet at 5 seconds. .FRIDAY...South winds increasing to 15 to 20 knots. Seas building to 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 4 feet at 5 seconds and east 4 feet at 10 seconds. A slight chance of showers in the morning, then a chance of showers in the afternoon. .FRIDAY NIGHT...Southwest winds around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 4 feet at 5 seconds and east 3 feet at 10 seconds. A chance of showers. .SATURDAY...West southwest winds around 15 knots, becoming northwest during the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 3 feet at 4 seconds and southwest 3 feet at 5 seconds. Showers with a slight chance of thunderstorms. .SATURDAY NIGHT...North winds increasing to 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North 3 feet at 4 seconds and southwest 3 feet at 5 seconds. Showers with a slight chance of thunderstorms. .SUNDAY AND SUNDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers with a slight chance of thunderstorms. .MONDAY...North northwest winds increasing 20 to 25 knots. Seas building to 6 to 7 feet, occasionally to 9 feet. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$