National Weather Service Marine Forecast FZUS52 KJAX

FZUS52 KJAX 100030
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
830 PM EDT Tue Jun 9 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.

AMZ400-101530
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
830 PM EDT Tue Jun 9 2026

SYNOPSIS

A trough over the east central Florida coast will move westward, dissipating over central Florida tonight, with isolated to scattered coastal showers over the northeast Florida waters. High pressure will weaken off the mid-Atlantic coast as it pushes southeastward towards Bermuda tonight and Wednesday, maintaining a prevailing southeasterly flow across our local waters through Thursday. Evening wind surges will increase speeds to near Caution levels during the evening hours from Wednesday through the weekend. Troughing will then develop over the southeastern states this weekend, creating a prevailing southerly wind and increasing afternoon and evening showers and thunderstorms across our local waters.

GULF STREAM

The approximate location of the west wall of the Gulf Stream as of Jun 09, 2026 at 0000 UTC...

50 nautical miles east of Flagler Beach. 58 nautical miles east of Saint Augustine Beach. 70 nautical miles east southeast of Jacksonville Beach. 76 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

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AMZ450-452-454-101530
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
830 PM EDT Tue Jun 9 2026

REST OF TONIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers this evening, then a chance of showers.

WEDNESDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A slight chance of showers in the morning.

WEDNESDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop.

THURSDAY
South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop.

THURSDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop.

FRIDAY
Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop.

SATURDAY
Southwest winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms through the night.

SUNDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the afternoon. A slight chance of showers and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.

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AMZ470-472-474-101530
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
830 PM EDT Tue Jun 9 2026

REST OF TONIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance of showers.

WEDNESDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds and east 2 feet at 4 seconds.

WEDNESDAY NIGHT
South winds 10 to 15 knots. Seas around 3 feet. Wave Detail: East 3 feet at 8 seconds and southeast 2 feet at 4 seconds.

THURSDAY
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds.

THURSDAY NIGHT AND FRIDAY
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance of showers and thunderstorms after midnight.

SATURDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms through the night.

SUNDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms through the day, then a chance of showers and thunderstorms in the evening. A slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.