026
FZUS52 KJAX 170448
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1248 AM EDT Thu Jul 17 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.

AMZ400-172000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1248 AM EDT Thu Jul 17 2025

.SYNOPSIS...

A broad area of low pressure continues to shift westward across the
northern Gulf today while the Atlantic high pressure extends across
the local waters. The high will slide south and extend across south
Florida late Friday allowing weak offshore flow to develop.
Afternoon thunderstorm chances will be low through the rest of the
week and over the weekend but are expected to increase over the
waters next week as a trough shifts toward the area.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Jul 15, 2025 at 1200 UTC...

 60 nautical miles east northeast of Flagler Beach.
 59 nautical miles east of Saint Augustine Beach.
 61 nautical miles east of Jacksonville Beach.
 66 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-172000-
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-
1248 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...South winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5
seconds. Intracoastal waters a moderate chop.
.THURSDAY...Southeast winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters a
moderate chop. A slight chance of showers in the morning, then a
chance of showers with a slight chance of thunderstorms in the
afternoon.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters a
moderate chop. A slight chance of showers in the evening.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 7 seconds. Intracoastal waters a moderate
chop. A slight chance of showers in the morning, then a chance of
showers and thunderstorms in the afternoon.
.FRIDAY 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 8 seconds. Intracoastal waters a moderate
chop.
.SATURDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet
at 8 seconds. Intracoastal waters light chop. A slight chance of
showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to
3 feet. Intracoastal waters light chop.
.SUNDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A slight chance of showers and
thunderstorms through the night.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters light chop. A chance of showers and
thunderstorms through the night. A chance of showers with a
slight chance of thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-172000-
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-
1248 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...South winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6
seconds. A slight chance of showers.
.THURSDAY...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of
thunderstorms in the morning. A slight chance of showers.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds and south 2 feet at
4 seconds. A slight chance of showers.
.FRIDAY...South winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 8 seconds. A slight chance of showers
and thunderstorms.
.FRIDAY NIGHT AND SATURDAY...South winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 8 seconds.
.SATURDAY NIGHT...Southwest winds around 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 8 seconds and south
2 feet at 3 seconds.
.SUNDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots. Seas 2 to 3 feet. A slight chance of showers. A slight
chance of thunderstorms.
.MONDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$