Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
645 FZUS52 KJAX 030013 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 813 PM EDT Fri Oct 2 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. AMZ400-031515- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 813 PM EDT Fri Oct 2 2026 .SYNOPSIS... High pressure positioned near Bermuda will maintain a prevailing southeasterly wind flow across our local waters through the weekend. Meanwhile, a surge of tropical moisture overspreading our local waters will result in waves of showers and thunderstorms moving from south to north through the weekend. Outside of thunderstorm activity, winds and seas are expected to remain below Caution levels through at least Monday afternoon. Otherwise, a cold front entering the southeastern states on Saturday will slow its forward progress, moving across the Georgia waters on Monday and then stalling over the northeast Florida waters by Tuesday. Strong high pressure building over the Great Lakes and Mid Atlantic region in the wake of this front will wedge down the southeastern seaboard, providing a prolonged surge of northeasterly winds and building seas across our local waters. Small Craft Advisory conditions are likely by Tuesday, with the potential for wind gusts near Gale force through Thursday. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Oct 02, 2026 at 0000 UTC... 54 nautical miles east of Flagler Beach. 62 nautical miles east of Saint Augustine Beach. 74 nautical miles east southeast of Jacksonville Beach. 71 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-031515- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 813 PM EDT Fri Oct 2 2026 .REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 11 seconds. Intracoastal waters light chop. Showers likely. A slight chance of thunderstorms. .SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters a moderate chop. A chance of showers. A chance of thunderstorms, mainly in the evening. .SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters light chop. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .MONDAY AND MONDAY NIGHT...North winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Intracoastal waters choppy. Showers with a chance of thunderstorms. .TUESDAY THROUGH WEDNESDAY...Northeast winds 25 to 35 knots. Seas 7 to 10 feet, occasionally to 13 feet. Intracoastal waters extremely rough. Showers with a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-031515- 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- 813 PM EDT Fri Oct 2 2026 .REST OF TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 10 seconds. Showers likely. A slight chance of thunderstorms. .SATURDAY...East winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and east 2 feet at 10 seconds. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and east 2 feet at 11 seconds. A chance of showers. A chance of thunderstorms, mainly in the evening. .SUNDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and east 2 feet at 11 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Showers likely with a chance of thunderstorms. .MONDAY AND MONDAY NIGHT...Northwest winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds. Showers with a chance of thunderstorms. .TUESDAY THROUGH WEDNESDAY...Northeast winds 25 to 35 knots. Seas 8 to 11 feet, occasionally to 14 feet. Showers with a chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$