686
FZUS52 KJAX 110626
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
226 AM EDT Tue Aug 11 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.

AMZ400-112100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
226 AM EDT Tue Aug 11 2026

.SYNOPSIS...

Today, Atlantic high pressure will shift south and westward as a
trough forms over the southeastern states, with winds prevailing
west-southwesterly this morning and more westerly the rest of the
week. Each afternoon, the sea breeze will shift winds southeasterly
over the near shore waters through the upcoming weekend, followed by
southerly evening wind surges which may briefly increase to near
caution levels. Scattered thunderstorms may push east from the coast
into the coastal waters this evening. Scattered mainly afternoon and
evening thunderstorms will remain possible each day through the
upcoming weekend.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 10, 2026 at 0000 UTC...

 46 nautical miles east of Flagler Beach.
 58 nautical miles east of Saint Augustine Beach.
 70 nautical miles east southeast of Jacksonville Beach.
 66 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-112100-
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 AM EDT Tue Aug 11 2026

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal
waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
7 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots, becoming west
after midnight. Seas around 2 feet. Wave Detail: South 2 feet at
4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters
a moderate chop. A slight chance of showers and thunderstorms in
the evening.
.WEDNESDAY...West winds 10 to 15 knots, becoming south 5 to
10 knots in the afternoon. Seas around 2 feet. Wave Detail: West
2 feet at 3 seconds and southeast 2 feet at 7 seconds.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal
waters a moderate chop. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY AND THURSDAY NIGHT...Southwest winds 10 to 15 knots.
Seas around 2 feet. Wave Detail: West 2 feet at 3 seconds.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms.
.FRIDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms in the afternoon.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
Intracoastal waters a moderate chop. A slight chance of showers
and thunderstorms in the afternoon. A chance of showers and
thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-112100-
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 AM EDT Tue Aug 11 2026

.REST OF TONIGHT...Southwest winds around 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 7 seconds.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
7 seconds.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 4 seconds and southeast
2 feet at 7 seconds. A slight chance of showers and thunderstorms
in the evening.
.WEDNESDAY...West winds 10 to 15 knots, becoming southwest in the
afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at
4 seconds and southeast 2 feet at 8 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southwest 3 feet at 4 seconds. A slight
chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.THURSDAY AND THURSDAY NIGHT...Southwest winds 10 to 15 knots.
Seas 2 to 3 feet. Wave Detail: West 3 feet at 4 seconds. A slight
chance of showers and thunderstorms.
.FRIDAY THROUGH SATURDAY...South winds 10 to 15 knots. Seas 2 to
3 feet. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$