National Weather Service Marine Forecast FZUS52 KJAX

FZUS52 KJAX 131724
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1224 PM EST Tue Jan 13 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.

AMZ400-140800
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
1224 PM EST Tue Jan 13 2026

A coastal trough over the waters breaks down this afternoon and shifts farther offshore as high pressure builds across the the Gulf coast states. The high will extend across the local waters tonight into Wednesday as a broad surface low tracks northward well east of the local Atlantic coast. Westerly winds increase Wednesday night as a strong cold front moves across the region. Small craft advisory conditions return Thursday trailing the frontal passage and continue into Thursday night. Winds and seas subside Friday as high pressure builds directly over the local waters. The high will shift southeast Saturday as a weaker, dry cold front moves across the waters with a surge in northwest to north winds behind the frontal passage late Saturday into Sunday.

GULF STREAM

The approximate location of the west wall of the Gulf Stream as of Jan 13, 2026 at 0000 UTC...

50 nautical miles east of Flagler Beach. 53 nautical miles east of Saint Augustine Beach. 64 nautical miles east southeast of Jacksonville Beach. 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

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AMZ450-452-454-140800
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
1224 PM EST Tue Jan 13 2026

REST OF TODAY
North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds. Intracoastal waters a moderate chop.

TONIGHT
North winds 5 to 10 knots, becoming west after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers after midnight.

WEDNESDAY
West winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 8 seconds and west 2 feet at 3 seconds. Intracoastal waters a moderate chop. A slight chance of showers.

WEDNESDAY NIGHT
West winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: West 2 feet at 3 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A slight chance of showers in the evening, then a chance of showers after midnight.

THURSDAY
Northwest winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northwest 5 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters rough. A chance of showers in the morning.

THURSDAY NIGHT
Northwest winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 6 feet at 5 seconds and east 3 feet at 9 seconds. Intracoastal waters very rough.

FRIDAY
Northwest winds 10 to 15 knots, becoming southwest. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet. Intracoastal waters a moderate chop.

SATURDAY
Southwest winds 10 to 15 knots, becoming west 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy.

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AMZ470-472-474-140800
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
1224 PM EST Tue Jan 13 2026

REST OF TODAY
North winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds.

TONIGHT
Northwest winds 5 to 10 knots, becoming west after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds. A chance of showers after midnight.

WEDNESDAY
West winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: West 3 feet at 4 seconds and northeast 3 feet at 8 seconds. A chance of showers, mainly in the morning.

WEDNESDAY NIGHT
West winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: West 4 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.

THURSDAY
Northwest winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet in the afternoon. Wave Detail: Northwest 6 feet at 5 seconds and east 2 feet at 8 seconds, becoming northwest 7 feet at 6 seconds. A chance of showers, mainly in the morning.

THURSDAY NIGHT
Northwest winds 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northwest 8 feet at 6 seconds.

FRIDAY THROUGH SATURDAY
West winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet.