National Weather Service Marine Forecast FZUS52 KJAX

FZUS52 KJAX 231327
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
827 AM EST Mon Feb 23 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.

AMZ400-240430
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
827 AM EST Mon Feb 23 2026

SYNOPSIS

Intense low pressure situated off the Mid-Atlantic coast early this morning will lift northeast through tonight, reaching Atlantic Canada by early Tuesday morning. Meanwhile, Arctic high pressure building southeastward from the Upper Midwest will gradually weaken as it settles over the Florida panhandle by sunrise on Tuesday. Small Craft Advisory conditions expected rest of today and tonight before winds and seas gradually subside on Tuesday as weakening high pressure shifts southeastward towards the Florida peninsula. This high pressure center will then shift offshore of the southeast Florida coast by Wednesday afternoon, with breezy south
southwesterly winds prevailing across our local waters through Friday. Showers and possibly a few thunderstorms will overspread our local waters on Friday and Friday night as a frontal boundary stalls over our area. A wave of weak low pressure potentially developing along this front could keep shower chances in place for at least a portion of the upcoming weekend.

GULF STREAM

The approximate location of the west wall of the Gulf Stream as of Feb 22, 2026 at 0000 UTC...

62 nautical miles east of Flagler Beach. 62 nautical miles east of Saint Augustine Beach. 74 nautical miles east southeast of Jacksonville Beach. 80 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

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AMZ450-452-454-240430
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
827 AM EST Mon Feb 23 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING

REST OF TODAY
Northwest winds 25 to 30 knots, diminishing to 15 to 20 knots this afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 7 feet at 6 seconds and northeast 3 feet at 9 seconds. Intracoastal waters very rough.

TONIGHT
Northwest winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northwest 5 feet at 5 seconds and northeast 4 feet at 8 seconds. Intracoastal waters rough.

TUESDAY
Northwest winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet in the afternoon. Wave Detail: North 4 feet at 6 seconds, becoming north 3 feet at 6 seconds. Intracoastal waters a moderate chop.

TUESDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 8 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop.

WEDNESDAY AND WEDNESDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 10 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop.

THURSDAY
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds and east 2 feet at 11 seconds. Intracoastal waters a moderate chop. A slight chance of showers in the evening. A chance of showers after midnight.

FRIDAY
South winds 10 to 15 knots, becoming southeast. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely.

Winds and waves higher in and near thunderstorms.

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AMZ470-472-474-240430
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
827 AM EST Mon Feb 23 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING

REST OF TODAY
Northwest winds 25 to 30 knots, diminishing to 20 to 25 knots this afternoon. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Northwest 10 feet at 7 seconds and east 2 feet at 10 seconds.

TONIGHT
Northwest winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northwest 6 feet at 6 seconds and northeast 2 feet at 10 seconds.

TUESDAY
Northwest winds 15 to 20 knots, becoming west 5 to 10 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 2 to 4 feet, occasionally to 5 feet in the afternoon. Wave Detail: North 5 feet at 6 seconds and northeast 2 feet at 11 seconds, becoming north 3 feet at 7 seconds.

TUESDAY NIGHT
Southwest winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 10 seconds and southwest 3 feet at 4 seconds.

WEDNESDAY AND WEDNESDAY NIGHT
Southwest winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southwest 3 feet at 4 seconds and northeast 3 feet at 11 seconds.

THURSDAY
South winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds and northeast 2 feet at 11 seconds. A slight chance of showers in the evening. A chance of showers after midnight.

FRIDAY
South winds 10 to 15 knots, becoming southeast. Seas 2 to 4 feet, occasionally to 5 feet. A slight chance of thunderstorms in the morning. A chance of showers through the day, then showers likely through the night.

Winds and seas higher in and near thunderstorms.