Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
532 FZUS52 KJAX 061247 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 847 AM EDT Sun Sep 6 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. AMZ400-070400- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 847 AM EDT Sun Sep 6 2026 .SYNOPSIS... High pressure will continue south of the local waters today as a front approaches from the northeast. Strong thunderstorms are possible this afternoon and evening as the front approaches. The front will stall across north Florida Monday, then shifts south of the waters Monday night into Tuesday as high pressure strengthens to the northeast. A brief period of Small Craft Exercise Caution conditions is possible mainly over the Georgia waters Tuesday as a coastal trough develops offshore. The coastal trough weakens Wednesday into Thursday. Friday into Saturday, high pressure extends across south Florida with a return of westerly winds and the afternoon east coast sea breeze nearshore. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Sep 05, 2026 at 0000 UTC... 46 nautical miles east of Flagler Beach. 53 nautical miles east of Saint Augustine Beach. 64 nautical miles east southeast of Jacksonville Beach. 76 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-070400- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 847 AM EDT Sun Sep 6 2026 .REST OF TODAY...West winds 5 to 10 knots, becoming southeast this afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Intracoastal waters light chop. A chance of showers. A chance of thunderstorms, mainly in the evening. .MONDAY...Northwest winds around 5 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. Showers likely. A chance of thunderstorms, mainly in the evening. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 7 seconds. Intracoastal waters light chop. Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms, mainly in the evening. .WEDNESDAY THROUGH THURSDAY...Southwest winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters light chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-070400- 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- 847 AM EDT Sun Sep 6 2026 .REST OF TODAY...West winds 5 to 10 knots, becoming south this afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at 4 seconds. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 9 seconds. A chance of showers and thunderstorms. .MONDAY...West winds 5 to 10 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 7 seconds. Showers likely with a chance of thunderstorms. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. A chance of showers. A chance of thunderstorms, mainly in the evening. .WEDNESDAY...East winds 5 to 10 knots, becoming south. Seas 4 to 6 feet, occasionally to 8 feet. A chance of showers and thunderstorms, mainly in the morning. .THURSDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms through the day, then a chance of showers and thunderstorms through the night. Winds and seas higher in and near thunderstorms. $$