


Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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430 FZUS52 KJAX 161729 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 128 PM EDT Thu Oct 16 2025 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. AMZ400-170800- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 128 PM EDT Thu Oct 16 2025 .SYNOPSIS... Elevated seas offshore will maintain Small Craft Advisory conditions through at least early Friday morning. High pressure will then weaken as it shifts southeastward towards our local waters on Saturday, allowing winds and seas to diminish. A weakening cold front will then approach our region on Sunday night, possibly developing a few showers and thunderstorms ahead of it. Southwesterly winds will briefly strengthen ahead of this boundary, with winds shifting to northerly in the wake of this frontal passage by early Monday. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Oct 11, 2025 at 1200 UTC... 56 nautical miles east northeast of Flagler Beach. 59 nautical miles east of Saint Augustine Beach. 76 nautical miles east of Jacksonville Beach. 94 nautical miles east of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-170800- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- 128 PM EDT Thu Oct 16 2025 .REST OF TODAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters a moderate chop. .TONIGHT...Northeast winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds and east 4 feet at 5 seconds. Intracoastal waters a moderate chop. .FRIDAY...Northeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. Intracoastal waters a moderate chop. .FRIDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. .SATURDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 10 seconds. Intracoastal waters light chop. .SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 9 seconds and east 3 feet at 12 seconds. Intracoastal waters light chop. .SUNDAY THROUGH MONDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters a moderate chop. $$ AMZ452-454-170800- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 128 PM EDT Thu Oct 16 2025 ...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH FRIDAY AFTERNOON... .REST OF TODAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 10 seconds. Intracoastal waters choppy. .TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 10 seconds and northeast 5 feet at 6 seconds. Intracoastal waters choppy. .FRIDAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 10 seconds. Intracoastal waters choppy. .FRIDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. Intracoastal waters a moderate chop. .SATURDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters light chop. .SATURDAY NIGHT...Southeast winds around 10 knots, becoming south after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters light chop. .SUNDAY THROUGH MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Intracoastal waters a moderate chop. $$ AMZ470-472-474-170800- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 128 PM EDT Thu Oct 16 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON... .REST OF TODAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 10 seconds. .TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 10 seconds and northeast 2 feet at 6 seconds. .FRIDAY...Northeast winds around 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 10 seconds. .FRIDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 9 seconds. .SATURDAY...East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 9 seconds and east 2 feet at 9 seconds. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 9 seconds. .SUNDAY THROUGH MONDAY...Southeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. $$