National Weather Service Marine Forecast FZUS52 KJAX

FZUS52 KJAX 041840 CCA
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
222 PM EDT Fri Apr 4 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.

AMZ400-050930
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm
222 PM EDT Fri Apr 4 2025

SYNOPSIS

Strong high pressure centered near Bermuda will maintain gusty southeast to southerly winds across our local waters through Saturday evening. A southerly wind surge will likely result in Caution conditions developing offshore on Saturday afternoon. Meanwhile, a strong cold front entering the southeastern states on Sunday will shift prevailing winds to southwesterly, with Caution conditions likely expanding to the near shore waters. Showers and thunderstorms will then overspread our local waters on Monday afternoon and evening as the cold front approaches our region from the northwest, with a few strong thunderstorms possible. Gusty northwesterly winds will develop in the wake of this frontal passage by early Tuesday morning, with winds shifting to northerly by Tuesday afternoon as high pressure building over the Ohio and Tennessee Valleys begins to wedge down the southeastern seaboard. Weak low pressure developing over the Bahamas towards midweek will likely bring Small Craft Advisory conditions to our local waters as northeasterly winds strengthen and seas build.

GULF STREAM

The approximate location of the west wall of the Gulf Stream as of Apr 03, 2025 at 1200 UTC...

58 nautical miles east of Flagler Beach. 66 nautical miles east of Saint Augustine Beach. 75 nautical miles east of Jacksonville Beach. 88 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

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AMZ450-452-454-050930
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
222 PM EDT Fri Apr 4 2025

TONIGHT
Southeast winds around 15 knots, becoming south around 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds. Intracoastal waters becoming a light chop. Patchy dense fog after midnight.

SATURDAY
South winds 10 to 15 knots, becoming southeast 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 8 seconds and southeast 2 feet at 3 seconds. Intracoastal waters becoming choppy. Patchy dense fog early in the morning.

SATURDAY NIGHT
South winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 8 seconds and southeast 3 feet at 5 seconds. Intracoastal waters a moderate chop.

SUNDAY
South winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and southeast 4 feet at 9 seconds. Intracoastal waters becoming choppy.

SUNDAY NIGHT
South southwest winds 15 to 20 knots, diminishing to around 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 8 seconds. Intracoastal waters becoming a moderate chop.

MONDAY
Southwest winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 8 seconds and southwest 3 feet at 4 seconds. Intracoastal waters choppy. A chance of showers in the morning, then showers and thunderstorms likely in the afternoon.

MONDAY NIGHT
Northwest winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. Showers with a chance of thunderstorms in the evening, then a chance of showers after midnight.

TUESDAY AND TUESDAY NIGHT
North northeast winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of showers.

WEDNESDAY
Northeast winds around 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet. Intracoastal waters choppy. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

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AMZ470-472-474-050930
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
222 PM EDT Fri Apr 4 2025

TONIGHT
South southeast winds around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 8 seconds.

SATURDAY
South winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 8 seconds.

SATURDAY NIGHT THROUGH SUNDAY NIGHT
South southwest winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 6 feet at 8 seconds.

MONDAY
South southwest winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds and southwest 2 feet at 4 seconds. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon.

MONDAY NIGHT
West winds 15 to 20 knots, becoming northwest after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Showers with a chance of thunderstorms.

TUESDAY AND TUESDAY NIGHT
North northeast winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers.

WEDNESDAY
Northeast winds around 20 knots. Seas 5 to 6 feet, occasionally to 8 feet, building to 7 to 10 feet, occasionally to 13 feet. A slight chance of showers.

Winds and seas higher in and near thunderstorms.