Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
244 FZUS52 KJAX 300402 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 1202 AM EDT Sun Aug 30 2026 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. AMZ400-301915- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 1202 AM EDT Sun Aug 30 2026 .SYNOPSIS... Onshore winds continue this weekend as high pressure builds to the north of the local waters and remains in place through much of next week. This will focus chances for showers and thunderstorms mainly inland, with lower chances across area waters overall. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Aug 29, 2026 at 0000 UTC... 50 nautical miles east of Flagler Beach. 62 nautical miles east of Saint Augustine Beach. 74 nautical miles east southeast of Jacksonville Beach. 80 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-301915- 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- 1202 AM EDT Sun Aug 30 2026 .REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms. .SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A chance of showers. A chance of thunderstorms, mainly in the morning. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms, mainly in the morning. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers. A slight chance of thunderstorms after midnight. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. .WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers and thunderstorms, mainly in the morning. .THURSDAY...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. $$ AMZ470-472-474-301915- 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- 1202 AM EDT Sun Aug 30 2026 .REST OF TONIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers. A slight chance of thunderstorms late this evening, then a chance of thunderstorms. .SUNDAY...East winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 3 feet at 8 seconds. A chance of showers. A chance of thunderstorms, mainly in the morning. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. A chance of showers and thunderstorms. .MONDAY NIGHT AND TUESDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 8 seconds. A chance of showers and thunderstorms. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds and east 3 feet at 12 seconds. A slight chance of showers and thunderstorms. .WEDNESDAY THROUGH THURSDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$