709
FZUS52 KJAX 161805
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
205 PM EDT Thu Jul 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-
205 PM EDT Thu Jul 16 2026

.SYNOPSIS...

High pressure will remain to the west near the northern Gulf coast
through Friday with west to northwest winds turning east to
southeasterly each afternoon due to daily seabreeze circulation.
Afternoon thunderstorms near the coast may drift to the nearshore
waters during the early evening today and Friday. A weak trough will
develop over the area Saturday with prevailing wind flow from the
southwest with a southerly wind surge in the evening hours elevating
winds to near caution levels.

Surface troughing will strengthen Sunday and Monday, with weak low
pressure possibly developing over the northeast Gulf. The National
Hurricane Center has maintained a low chance, or 20 percent, of weak
tropical cyclone formation in the northeast Gulf. Showers and
thunderstorms will increase in coverage this weekend, and this weak
low pressure center may then progress northeastward across our local
waters early next week.


.GULF STREAM...

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

 46 nautical miles east of Flagler Beach.
 53 nautical miles east of Saint Augustine Beach.
 64 nautical miles east southeast of Jacksonville Beach.
 76 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-
205 PM EDT Thu Jul 16 2026

.REST OF TODAY...Southeast winds around 5 knots. Seas around
2 feet. Wave Detail: Northeast 2 feet at 7 seconds. Intracoastal
waters smooth. A slight chance of showers and thunderstorms.
.TONIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at
7 seconds. Intracoastal waters light chop.
.FRIDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at
7 seconds. Intracoastal waters light chop.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 3 seconds. Intracoastal waters light
chop.
.SATURDAY...South winds 5 to 10 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal
waters choppy. A chance of showers and thunderstorms in the
afternoon.
.SATURDAY NIGHT...South winds 15 to 20 knots, becoming southwest
10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east
2 feet at 8 seconds. Intracoastal waters choppy. A chance of
showers with a slight chance of thunderstorms in the evening.
.SUNDAY...South winds 15 to 20 knots, becoming southwest 10 to
15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal
waters choppy. A chance of thunderstorms in the afternoon. A
chance of showers through the night. A slight chance of
thunderstorms through the night. A slight chance of showers after
midnight.
.MONDAY...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 morning, then showers and thunderstorms
likely in the afternoon. A chance of showers and thunderstorms in
the evening, then a slight chance of showers after midnight.

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-
205 PM EDT Thu Jul 16 2026

.REST OF TODAY...East winds around 5 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 7 seconds.
.TONIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at
7 seconds.
.FRIDAY...West winds around 5 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at
7 seconds.
.FRIDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 3 seconds.
.SATURDAY...South winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: South 4 feet at 5 seconds. A slight chance
of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at
7 seconds. A slight chance of thunderstorms. A chance of showers,
mainly in the evening.
.SUNDAY THROUGH MONDAY...South winds 15 to 20 knots. Seas 3 to
4 feet, occasionally to 5 feet. A chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$