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FZUS52 KJAX 080940
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
540 AM EDT Sat Aug 8 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.

AMZ400-090045-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
540 AM EDT Sat Aug 8 2026

.SYNOPSIS...

A trough of low pressure will move through the area today with
breezy southeast to south winds and occasionally rough seas.  In
addition, numerous showers and thunderstorms are expected at times
over the area waters through tonight. Some of the thunderstorms may
be strong. High pressure ridging will slowly build into the area
late Sunday into early next week resulting in a slow lowering of
winds and seas.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 07, 2026 at 0000 UTC...

 46 nautical miles east of Flagler Beach.
 49 nautical miles east of Saint Augustine Beach.
 60 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-090045-
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-
540 AM EDT Sat Aug 8 2026

.TODAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds.
Intracoastal waters a moderate chop. Showers likely, and a chance
of thunderstorms.
.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to
10 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal
waters a moderate chop. A slight chance of showers and
thunderstorms.
.SUNDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 8 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 8 seconds. Intracoastal waters a moderate chop.
.MONDAY...South winds around 5 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 3 seconds and east 2 feet at 7 seconds.
Intracoastal waters a moderate chop.
.MONDAY NIGHT...South winds 10 to 15 knots, becoming southwest
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 7 seconds and southeast 2 feet at 4 seconds.
Intracoastal waters a moderate chop.
.TUESDAY THROUGH WEDNESDAY...Southwest winds 10 to 15 knots. Seas
2 to 3 feet. Intracoastal waters a moderate chop. A slight chance
of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-090045-
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-
540 AM EDT Sat Aug 8 2026

.TODAY...Southeast winds around 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. A
chance of thunderstorms. Showers likely, mainly this morning.
.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. A
slight chance of showers and thunderstorms.
.SUNDAY...South winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 8 seconds.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 8 seconds.
.MONDAY AND MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas
2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds.
.TUESDAY THROUGH WEDNESDAY...Southwest winds 10 to 15 knots. Seas
2 to 3 feet. Wave Detail: South 3 feet at 4 seconds and southeast
2 feet at 7 seconds.

Winds and seas higher in and near thunderstorms.

$$