808
FZUS52 KJAX 151826
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
226 PM EDT Sat Aug 15 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.

AMZ400-160900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
226 PM EDT Sat Aug 15 2026

.SYNOPSIS...

Atlantic high pressure will build westward across the Florida
peninsula today. Only isolated to widely scattered thunderstorms are
expected to develop late this afternoon and evening, mainly for the
waters north of St. Augustine. The axis of Atlantic high pressure
will then shift southward on Sunday and Monday as a frontal boundary
pushes into the southeastern states, with this feature stalling just
north of the Georgia waters by midweek. Southwest to westerly winds
will prevail from Sunday through midweek, with evening wind surges
likely increasing speeds to Caution levels. Only isolated to widely
scattered afternoon and evening thunderstorms are expected on Sunday
and Monday, with coverage potentially increasing towards midweek as
the frontal boundary approaches from the north.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 15, 2026 at 0000 UTC...

 50 nautical miles east of Flagler Beach.
 49 nautical miles east of Saint Augustine Beach.
 56 nautical miles east southeast of Jacksonville Beach.
 68 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-160900-
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 Sat Aug 15 2026

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal
waters a moderate chop.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds. Intracoastal waters a
moderate chop. A slight chance of showers and thunderstorms in
the evening.
.SUNDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters
light chop. A slight chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. 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 evening.
.MONDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
8 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 3 seconds and southeast 2 feet
at 8 seconds. Intracoastal waters a moderate chop. A slight
chance of showers in the evening.
.TUESDAY THROUGH WEDNESDAY...Southwest winds 5 to 10 knots. Seas
2 to 3 feet. Intracoastal waters light chop. A chance of showers
and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-160900-
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 Sat Aug 15 2026

.REST OF TODAY...South winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.TONIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 4 seconds.
.SUNDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at
4 seconds and southeast 2 feet at 8 seconds.
.SUNDAY NIGHT...Southwest winds around 10 knots, becoming west
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet
at 8 seconds and south 2 feet at 4 seconds.
.MONDAY...West winds around 10 knots, becoming southwest in the
afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at
3 seconds and southeast 2 feet at 8 seconds. A slight chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 4 seconds and southeast 2 feet
at 8 seconds.
.TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the afternoon.

Winds and seas higher in and near thunderstorms.

$$