Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
783 FZUS52 KJAX 280402 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 1202 AM EDT Mon Sep 28 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. AMZ400-281915- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 1202 AM EDT Mon Sep 28 2026 .SYNOPSIS... High pressure will shift over the region early this week with prevailing west to southwest winds, turning southeasterly in the afternoon nearshore from the Atlantic seabreeze circulation. High pressure will shift east of the waters midweek with southerly winds, turning easterly in the afternoon over the nearshore waters from seabreeze circulation. Increasing moisture will bring a return of scattered showers and isolated thunderstorms over the waters by late in the week. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Sep 27, 2026 at 0000 UTC... 58 nautical miles east of Flagler Beach. 58 nautical miles east of Saint Augustine Beach. 70 nautical miles east southeast of Jacksonville Beach. 81 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-281915- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 1202 AM EDT Mon Sep 28 2026 .REST OF TONIGHT...Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 12 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. .MONDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds and east 3 feet at 11 seconds. Intracoastal waters a moderate chop. .MONDAY NIGHT...South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 2 feet at 10 seconds. Intracoastal waters a moderate chop. .TUESDAY...Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 10 seconds. Intracoastal waters light chop. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 10 seconds. Intracoastal waters light chop. .WEDNESDAY AND WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 3 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. .THURSDAY THROUGH FRIDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-281915- 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 Mon Sep 28 2026 .REST OF TONIGHT...Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 12 seconds and southwest 2 feet at 3 seconds. .MONDAY...Southwest winds 10 to 15 knots, becoming south in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 11 seconds and southwest 3 feet at 4 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds and northeast 3 feet at 10 seconds. .TUESDAY...Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 10 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 2 feet at 10 seconds. .WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 3 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. .WEDNESDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. .THURSDAY THROUGH FRIDAY...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. $$