Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
024 FZUS52 KJAX 261825 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 225 PM EDT Sat Sep 26 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. AMZ400-270900- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 225 PM EDT Sat Sep 26 2026 .SYNOPSIS... Strong low pressure off the mid-Atlantic coast will track further away to the north through the end of the weekend as high pressure builds southward from the eastern Great Lakes into the southeast U.S. As low pressure lifts away, seas will gradually diminish through this evening, ending small craft conditions. High pressure will shift over the region Sunday and Monday 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 midweek. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Sep 26, 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. 84 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-270900- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 225 PM EDT Sat Sep 26 2026 ...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 11 PM EDT THIS EVENING... .REST OF TODAY...North winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 12 seconds. Intracoastal waters light chop. .TONIGHT...Northeast winds 5 to 10 knots, becoming northwest after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 13 seconds. Intracoastal waters light chop. .SUNDAY...Northwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 13 seconds. Intracoastal waters a moderate chop. .SUNDAY NIGHT...South winds 10 to 15 knots, becoming southwest after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 12 seconds and south 3 feet at 4 seconds. Intracoastal waters a moderate chop. .MONDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds and east 3 feet at 11 seconds. Intracoastal waters a moderate chop. .MONDAY NIGHT...South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 2 feet at 11 seconds. Intracoastal waters a moderate chop. .TUESDAY THROUGH WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. $$ AMZ472-474-270900- 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- 225 PM EDT Sat Sep 26 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...North winds 10 to 15 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds. .TONIGHT...North winds 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds. .SUNDAY...Northwest winds 5 to 10 knots, becoming west in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 12 seconds and southwest 3 feet at 4 seconds. .MONDAY AND MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 11 seconds and southwest 3 feet at 4 seconds. .TUESDAY THROUGH WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and northeast 2 feet at 10 seconds. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$ AMZ470-270900- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- 225 PM EDT Sat Sep 26 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING... .REST OF TODAY...North winds 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 13 seconds. .TONIGHT...North winds 5 to 10 knots, becoming northwest after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 6 feet at 13 seconds. .SUNDAY...Northwest winds 5 to 10 knots, becoming southwest in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 13 seconds. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 12 seconds and south 3 feet at 3 seconds. .MONDAY AND MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southwest 3 feet at 4 seconds and east 3 feet at 11 seconds. .TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds and east 2 feet at 10 seconds. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A slight chance of showers in the afternoon. Winds and seas higher in and near thunderstorms. $$