FZUS52 KJAX 200004 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 804 PM EDT Tue May 19 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. AMZ400-201515- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 804 PM EDT Tue May 19 2026 .SYNOPSIS... High pressure will be centered to the east northeast this week and through the weekend. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of May 19, 2026 at 0000 UTC... 50 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. $$ AMZ450-452-454-201515- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 804 PM EDT Tue May 19 2026 .REST OF TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters a moderate chop. .WEDNESDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. .THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. Intracoastal waters a moderate chop. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. Intracoastal waters a moderate chop. .SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds. Intracoastal waters a moderate chop. .SUNDAY...Southeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of showers and thunderstorms through the day. A slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-201515- 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- 804 PM EDT Tue May 19 2026 .REST OF TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. .WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. .THURSDAY...Southeast winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. .FRIDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. A slight chance of showers and thunderstorms in the morning. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to5 feet. .SATURDAY THROUGH SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$