Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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778 FZUS52 KJAX 171255 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 755 AM EST Mon Nov 17 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. AMZ400-180400- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 755 AM EST Mon Nov 17 2025 .SYNOPSIS... High pressure will shift east-southeastward from the Ohio Valley towards the Carolinas by Monday evening, pushing a weakening and dry cold front south of our local waters. Onshore winds will develop this afternoon while briefly strengthening, followed by high pressure settling directly over our local waters later tonight and Tuesday, allowing for lighter onshore winds. Weakening high pressure will then shift offshore of the southeastern seaboard on Wednesday and will remain in control of our weather pattern through Saturday before another weakening cold front enters the southeastern states. This front will likely cross our local waters on Saturday night or Sunday, with a brief period of breezy southwest to westerly winds expected this weekend, with a few showers possible during the frontal passage. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Nov 15, 2025 at 1200 UTC... 64 nautical miles east of Flagler Beach. 76 nautical miles east of Saint Augustine Beach. 82 nautical miles east of Jacksonville Beach. 90 nautical miles east southeast of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-452-454-180400- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 755 AM EST Mon Nov 17 2025 .REST OF TODAY...Northwest winds 5 to 10 knots, becoming north northeast and increasing to 10 to 15 knots this afternoon. Seas around 2 feet. Wave Detail: West 2 feet at 3 seconds and northeast 2 feet at 3 seconds. Intracoastal waters becoming a light chop. .TONIGHT...Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at 4 seconds. Intracoastal waters becoming mostly smooth. .TUESDAY...East northeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 7 seconds. Intracoastal waters a light chop. .TUESDAY NIGHT..East southeast winds 5 to 10 knots, becoming southwest after midnight. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 8 seconds and east 2 feet at 8 seconds. Intracoastal waters mostly smooth. .WEDNESDAY...West winds around 5 knots, becoming southeast around 10 knots in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 7 seconds and northeast 2 feet at 8 seconds. Intracoastal waters becoming a light chop. .WEDNESDAY NIGHT...South winds around 5 knots, becoming southwest after midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at 8 seconds. Intracoastal waters smooth. .THURSDAY THROUGH FRIDAY...Southeast winds around 10 knots, becoming south after midnight. Seas around 2 feet. Intracoastal waters a light chop. $$ AMZ470-472-474-180400- 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- 755 AM EST Mon Nov 17 2025 .REST OF TODAY...Northwest winds 10 to 15 knots, becoming north northeast during the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 4 seconds. .TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds. .TUESDAY...East northeast winds around 10 knots. Seas around 3 feet. Wave Detail: Northeast 3 feet at 7 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest after midnight. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 9 seconds and east 2 feet at 8 seconds. .WEDNESDAY...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 8 seconds and east 2 feet at 8 seconds. .WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest after midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at 8 seconds. .THURSDAY THROUGH FRIDAY...Southeast winds 5 to 10 knots, becoming south 10 to 15 knots after midnight. Seas around 2 feet. $$