Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
467 FZUS52 KJAX 010410 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 1210 AM EDT Thu Oct 1 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. AMZ400-011915- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 1210 AM EDT Thu Oct 1 2026 .SYNOPSIS... High pressure over the Carolinas will move offshore and winds turn more east and southeast with rain chances gradually increasing through the weekend as another front settles over the southeast states. By early next week, strong high pressure over the eastern U.S. and the Mid Atlantic States will wedge down the east coast, bringing a cold front through the area waters Monday and result in strengthening northeast winds and building seas. Small Craft Advisory headlines are likely early next week with potential for wind gusts to gale force. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Sep 30, 2026 at 0000 UTC... 54 nautical miles east of Flagler Beach. 58 nautical miles east of Saint Augustine Beach. 70 nautical miles east southeast of Jacksonville Beach. 76 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-011915- 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- 1210 AM EDT Thu Oct 1 2026 .REST OF TONIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave Detail: East 2 feet at 3 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal waters a moderate chop. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 11 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 11 seconds. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms. .SATURDAY AND SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 10 seconds. Intracoastal waters light chop. Showers likely with a chance of thunderstorms. .SUNDAY...Southeast winds 5 to 10 knots, becoming southwest. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms through the night. A chance of showers with a slight chance of thunderstorms after midnight. .MONDAY...North winds 10 to 15 knots, becoming northeast 20 to 25 knots. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Showers. A slight chance of thunderstorms through the night. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-011915- 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- 1210 AM EDT Thu Oct 1 2026 .REST OF TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 3 seconds and east 2 feet at 12 seconds. A slight chance of showers. .THURSDAY...East winds around 10 knots. Seas around 3 feet. Wave Detail: East 2 feet at 4 seconds and east 2 feet at 10 seconds. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 2 feet at 10 seconds. A chance of showers with a slight chance of thunderstorms. .FRIDAY...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 11 seconds. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 10 seconds. A chance of showers and thunderstorms. .SATURDAY AND SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and east 2 feet at 10 seconds. Showers likely with a chance of thunderstorms. .SUNDAY THROUGH MONDAY...Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Showers with a chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$