National Weather Service Marine Forecast FZUS52 KJAX

FZUS52 KJAX 291816
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
216 PM EDT Tue Apr 29 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.

AMZ400-300930
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
216 PM EDT Tue Apr 29 2025

SYNOPSIS

High pressure will remain positioned off the southeastern seaboard through Friday. Breezy easterly winds this evening will shift to southeasterly while gradually decreasing after midnight. An evening wind surge is expected on Thursday well in advance of a cold front that will be entering the southeastern states on Friday afternoon and evening, with Caution conditions likely both near shore and offshore late this week. This cold front will cross our local waters on Saturday and Saturday evening, accompanied by showers and thunderstorms. A surge of northeasterly winds is forecast in the wake of this frontal passage on Sunday and Sunday night as high pressure building over the Ohio Valley wedges down the southeastern seaboard.

GULF STREAM

The approximate location of the west wall of the Gulf Stream as of Apr 26, 2025 at 1200 UTC...

64 nautical miles east of Flagler Beach. 66 nautical miles east of Saint Augustine Beach. 75 nautical miles east of Jacksonville Beach. 87 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

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AMZ450-452-454-300930
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
216 PM EDT Tue Apr 29 2025

TONIGHT
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming mostly smooth.

WEDNESDAY
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: East 3 feet at 7 seconds and southeast 2 feet at 3 seconds. Intracoastal waters becoming a light chop.

WEDNESDAY NIGHT AND THURSDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds and southeast 2 feet at 3 seconds. Intracoastal waters a light chop.

THURSDAY NIGHT AND FRIDAY
Southeast winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 3 feet at 8 seconds. Intracoastal waters choppy.

FRIDAY NIGHT
South winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds and east 3 feet at 8 seconds. Intracoastal waters becoming a light chop. A slight chance of showers and thunderstorms.

SATURDAY
Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots during the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters becoming a light chop. A slight chance of showers in the morning, then a chance of showers and thunderstorms during the afternoon.

SATURDAY NIGHT
South southwest winds 5 to 10 knots, becoming northwest after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters mostly smooth. A chance of showers and thunderstorms, mainly during the evening.

SUNDAY
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots during the afternoon and evening. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet, late in the afternoon. Intracoastal waters becoming choppy. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms.

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AMZ470-472-474-300930
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
216 PM EDT Tue Apr 29 2025

TONIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds.

WEDNESDAY
Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds.

WEDNESDAY NIGHT AND THURSDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds.

THURSDAY NIGHT AND FRIDAY
South winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds and southeast 3 feet at 5 seconds.

FRIDAY NIGHT
South winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 5 seconds and east 4 feet at 8 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.

SATURDAY
South winds 10 to 15 knots, becoming southeast during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms.

SATURDAY NIGHT
South southwest winds around 10 knots, becoming north northwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. A chance of showers and thunderstorms, mainly during the evening.

SUNDAY
Northeast winds increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet, during the late afternoon. A chance of showers and a slight chance of thunderstorms.

Winds and seas higher in and near thunderstorms.