115
FZUS52 KJAX 311826
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
226 PM EDT Mon Aug 31 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.

AMZ400-010900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
226 PM EDT Mon Aug 31 2026

.SYNOPSIS...

High pressure will remain centered over the southern Appalachians
through midweek, with coastal troughing remaining situated over our
near shore Atlantic waters. Showers and thunderstorms impacting the
Georgia waters late this morning will diminish early this afternoon
as activity develops inland. Additional rounds of showers and
embedded thunderstorms will be possible across our local waters
tonight and Tuesday, mainly from the evening through the overnight
and morning hours, with decreasing coverage during the afternoon
hours as activity shifts inland. Showers and thunderstorms will then
increase in coverage throughout our local waters on Thursday and
Friday as another trough progresses westward from the Atlantic
waters across our region. Onshore winds will prevail through
Saturday, followed by winds shifting to westerly by Saturday night
and Sunday as a frontal boundary enters the southeastern states.
Several rounds of showers and thunderstorms are possible during the
upcoming weekend ahead of this frontal boundary.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 31, 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.


$$

AMZ450-452-454-010900-
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-
226 PM EDT Mon Aug 31 2026

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 6 seconds. Intracoastal
waters a moderate chop. A chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 7 seconds. Intracoastal waters light chop.
A slight chance of thunderstorms. A slight chance of showers in
the evening, then a chance of showers after midnight.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 8 seconds. Intracoastal waters light chop.
A chance of showers and thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 8 seconds. Intracoastal waters light chop.
A chance of showers with a slight chance of thunderstorms after
midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds. Intracoastal waters light chop.
Showers likely with a slight chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 11 seconds. Intracoastal
waters light chop. A slight chance of showers and thunderstorms.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Intracoastal waters light chop. A chance of showers and
thunderstorms through the day, then a slight chance of showers
and thunderstorms in the evening.
.FRIDAY...Southeast winds 5 to 10 knots, becoming south. Seas
around 2 feet. Intracoastal waters light chop. A slight chance of
showers and thunderstorms through the day.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-010900-
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-
226 PM EDT Mon Aug 31 2026

.REST OF TODAY...East winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 8 seconds. A chance of showers and
thunderstorms.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 3 feet. Wave Detail: East
3 feet at 8 seconds. A chance of showers and thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 8 seconds. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 8 seconds. A slight chance of
thunderstorms. A slight chance of showers in the evening, then a
chance of showers after midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 11 seconds.
Showers likely. A slight chance of thunderstorms in the morning,
then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
10 seconds. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. A
chance of showers and thunderstorms, mainly in the morning.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the morning. A slight
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$