838
FZUS52 KJAX 151323
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
923 AM EDT Sat Mar 15 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.

AMZ400-152115-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
923 AM EDT Sat Mar 15 2025

.SYNOPSIS...

Winds will increase today from the southeast to south with
building seas leading to small craft advisory conditions by late
this afternoon. Small craft advisory conditions will continue
into Sunday. An occasional gust to gale force will be possible
tonight through Sunday. A line of potentially strong to severe
thunderstorms will move into the waters ahead of a cold front
Sunday afternoon and move east of the waters Sunday night. Breezy
northwest winds and rough seas are expected into Monday through
Monday night in the wake of the cold front. High pressure ridging
will then build in mid week.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Mar 13, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 93 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-152115-
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-
923 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH SUNDAY AFTERNOON...

.REST OF TODAY...Southeast winds 10 to 15 knots, increasing to
20 knots this afternoon. Seas 3 to 5 feet, occasionally to 6
feet. Wave Detail: Southeast 5 feet at 5 seconds. Intracoastal
waters choppy.
.TONIGHT...South winds 20 to 25 knots with gusts up to 35 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast
7 feet at 6 seconds. Intracoastal waters rough.
.SUNDAY...South winds 20 to 25 knots with gusts up to 35 knots,
diminishing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Southeast 7 feet at
7 seconds. Intracoastal waters rough. A chance of showers in the
morning, then showers with a chance of thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots, becoming west
15 to 20 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Southeast 6 feet at 8 seconds and west
3 feet at 3 seconds. Intracoastal waters choppy. A chance of
showers and thunderstorms in the evening, then a slight chance of
showers after midnight.
.MONDAY...Northwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at
8 seconds and northwest 3 feet at 4 seconds. Intracoastal waters
choppy.
.MONDAY NIGHT...Northwest winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Northwest 3 feet at 4 seconds and southeast
2 feet at 7 seconds. Intracoastal waters choppy.
.TUESDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal
waters a moderate chop.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming southwest
10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Intracoastal waters a moderate chop.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-152115-
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-
923 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH MONDAY AFTERNOON...

.REST OF TODAY...Southeast winds 15 knots increasing to 20 knots
this afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: Southeast 5 feet at 6 seconds and east 2 feet at 9
seconds. A chance of showers this morning.
.TONIGHT...South winds 20 to 25 knots with gusts up to 35 knots.
Seas 5 to 8 feet, occasionally to 10 feet, building to 7 to
9 feet, occasionally to 11 feet after midnight. Wave Detail:
Southeast 7 feet at 7 seconds and east 2 feet at 9 seconds,
becoming southeast 8 feet at 7 seconds and east 2 feet at
12 seconds.
.SUNDAY...South winds 20 to 25 knots with gusts up to 35 knots.
Seas 7 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast
9 feet at 7 seconds and east 2 feet at 12 seconds. A chance of
showers in the morning, then showers likely with a chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 15 to 20 knots, becoming west
after midnight. Seas 5 to 8 feet, occasionally to 10 feet. Wave
Detail: Southeast 8 feet at 8 seconds and west 4 feet at
4 seconds. Showers likely with a chance of thunderstorms in the
evening, then a chance of showers after midnight.
.MONDAY AND MONDAY NIGHT...North winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: West 5 feet at
5 seconds and southeast 4 feet at 8 seconds.
.TUESDAY...North winds 15 to 20 knots, diminishing to 5 to
10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast 5 feet at 9 seconds and north 4 feet at 6 seconds.
.WEDNESDAY...North winds 5 to 10 knots, becoming southwest 10 to
15 knots. Seas 5 to 7 feet, occasionally to 9 feet.

Winds and seas higher in and near thunderstorms.

$$