243
FZUS52 KJAX 161826
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
226 PM EDT Sun Aug 16 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.

AMZ400-170900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
226 PM EDT Sun Aug 16 2026

.SYNOPSIS...

Atlantic high pressure will continue to extend its axis westward
across the Florida peninsula, creating a prevailing westerly wind
pattern across our local waters. A frontal boundary will then push
into the southeastern states by Monday afternoon, with this feature
stalling just north of the Georgia waters by midweek. Chances for
mainly afternoon and evening thunderstorms will increase across our
local waters during the work week. Southwest to westerly winds will
continue to prevail, with brief evening surges of wind speeds to
Caution levels through the work week.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 16, 2026 at 0000 UTC...

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

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-170900-
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 Sun Aug 16 2026

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds and southeast
2 feet at 8 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms.
.TONIGHT...Southwest winds around 10 knots, becoming west after
midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters
a moderate chop. A slight chance of showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
8 seconds. Intracoastal waters light chop. A slight chance of
showers. A slight chance of 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.
.TUESDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at
3 seconds and east 2 feet at 8 seconds. Intracoastal waters light
chop. A slight chance of showers and thunderstorms in the
afternoon.
.TUESDAY NIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds.
Intracoastal waters light chop. A slight chance of showers and
thunderstorms in the evening.
.WEDNESDAY THROUGH THURSDAY...South 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.

$$

AMZ470-472-474-170900-
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 Sun Aug 16 2026

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

Winds and seas higher in and near thunderstorms.

$$