594
FZUS52 KJAX 181751
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
151 PM EDT Tue Aug 18 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.

AMZ400-190800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
151 PM EDT Tue Aug 18 2026

.SYNOPSIS...

A surface front will continue to linger across the southeast region
with Atlantic coast high pressure extending across the Bahamas. This
pattern will continue a prevailing southwest to south wind pattern
across the local waters with brief surges near Small Craft Exercise
Caution wind criteria in the afternoons and evenings. A daily east
coast sea breeze will bring winds south to southeast along the
immediate coast. Daily showers and isolated storms will impact
mainly the coastal waters east of Florida.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 18, 2026 at 0000 UTC...

 50 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.


$$

AMZ450-452-454-190800-
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-
151 PM EDT Tue Aug 18 2026

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

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-190800-
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-
151 PM EDT Tue Aug 18 2026

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

Winds and seas higher in and near thunderstorms.

$$