Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
383 FZUS52 KJAX 091155 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 655 AM EST Sun Nov 9 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. AMZ400-100300- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 655 AM EST Sun Nov 9 2025 .SYNOPSIS... Southerly winds will gradually strengthen this afternoon ahead of a strong cold front that will be entering the southeastern U.S. Showers and possibly a few strong thunderstorms will be possible ahead of this front during the late afternoon and evening hours as winds shift to southwesterly. This strong front will then cross our local waters during the overnight hours tonight, with Small Craft Advisory conditions overspreading our local waters as winds shift to northwesterly while strengthening after midnight. Strong high pressure building into the southeastern states on Monday will result in Gale Force wind gusts on Monday night, when Gale Warnings may be necessary for our local waters. High pressure will shift eastward and will become centered directly over our local waters by midweek, allowing for winds and seas to gradually diminish. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Nov 08, 2025 at 1200 UTC... 43 nautical miles east of Flagler Beach. 47 nautical miles east northeast of Saint Augustine Beach. 59 nautical miles east southeast of Jacksonville Beach. 79 nautical miles east of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-100300- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- 655 AM EST Sun Nov 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TODAY...Southwest winds 5 to 10 knots, becoming south this afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms this afternoon. .TONIGHT...Southwest winds 15 to 20 knots, becoming northwest 20 to 25 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northwest 4 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms in the evening. .MONDAY...Northwest winds 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northwest 4 feet at 4 seconds and northeast 2 feet at 7 seconds. Intracoastal waters rough. .MONDAY NIGHT...Northwest winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northwest 5 feet at 4 seconds. Intracoastal waters rough. .TUESDAY...Northwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northwest 4 feet at 4 seconds and northeast 2 feet at 7 seconds. Intracoastal waters choppy. .TUESDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. Intracoastal waters light chop. .WEDNESDAY THROUGH THURSDAY...West winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters light chop. Winds and waves higher in and near thunderstorms. $$ AMZ452-454-100300- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 655 AM EST Sun Nov 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 15 to 20 knots, becoming northwest 20 to 25 knots with gusts up to 35 knots after midnight. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet after midnight. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 7 seconds, becoming northwest 4 feet at 4 seconds and east 2 feet at 7 seconds. Intracoastal waters rough. A slight chance of showers and thunderstorms. .MONDAY...Northwest winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 5 feet at 5 seconds. Intracoastal waters very rough. .MONDAY NIGHT...Northwest winds 25 to 30 knots with gusts up to 40 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North 8 feet at 6 seconds. Intracoastal waters very rough. .TUESDAY...Northwest winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave Detail: North 7 feet at 6 seconds and east 2 feet at 10 seconds, becoming north 5 feet at 6 seconds and northeast 3 feet at 10 seconds. Intracoastal waters rough. .TUESDAY NIGHT...Northwest winds 10 to 15 knots, becoming west 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 6 seconds. Intracoastal waters a moderate chop. .WEDNESDAY THROUGH THURSDAY...West winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters light chop. Winds and waves higher in and near thunderstorms. $$ AMZ472-474-100300- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 655 AM EST Sun Nov 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 3 feet at 4 seconds and southeast 3 feet at 8 seconds. A slight chance of showers and thunderstorms this morning. A chance of showers with a slight chance of thunderstorms this afternoon. .TONIGHT...Southwest winds 15 to 20 knots, becoming northwest 20 to 25 knots with gusts up to 35 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Wave Detail: Southwest 4 feet at 4 seconds and east 2 feet at 8 seconds, becoming west 6 feet at 5 seconds and east 2 feet at 8 seconds. A slight chance of showers and thunderstorms. .MONDAY...Northwest winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northwest 7 feet at 6 seconds. .MONDAY NIGHT...Northwest winds 25 to 30 knots with gusts up to 40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northwest 10 feet at 7 seconds. .TUESDAY...Northwest winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northwest 9 feet at 7 seconds, becoming north 6 feet at 7 seconds. .TUESDAY NIGHT...North winds 10 to 15 knots, becoming northwest 5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet after midnight. Wave Detail: North 4 feet at 6 seconds, becoming north 3 feet at 7 seconds. .WEDNESDAY THROUGH THURSDAY...Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ470-100300- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- 655 AM EST Sun Nov 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TODAY...West winds 10 to 15 knots, becoming south this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 3 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 15 to 20 knots, becoming northwest 20 to 25 knots with gusts up to 35 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Wave Detail: Southwest 4 feet at 4 seconds and southeast 2 feet at 8 seconds, becoming west 5 feet at 5 seconds and southeast 2 feet at 8 seconds. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .MONDAY...Northwest winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 6 feet at 5 seconds. .MONDAY NIGHT...Northwest winds 25 to 30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northwest 8 feet at 6 seconds. .TUESDAY...Northwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave Detail: Northwest 7 feet at 6 seconds, becoming northwest 4 feet at 6 seconds. .TUESDAY NIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 3 feet at 5 seconds. .WEDNESDAY THROUGH THURSDAY...Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$