504
FZUS52 KJAX 140134
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
Issued by National Weather Service Tallahassee FL
934 PM EDT Thu Aug 13 2026

AMZ400-140730-
934 PM EDT Thu Aug 13 2026

.SYNOPSIS...

A trough of low pressure will develop over the southeast states
through the weekend while a high pressure ridge remains positioned
over the eastern Gulf and central Florida. This will result in
westerly winds during the next several days, with the sea breeze
shifting winds to southeast or south over the near shore waters each
afternoon, followed by south evening wind surges that may briefly
increase speeds to near caution levels before subsiding after
midnight. Stronger offshore flow may develop Monday and Tuesday next
week. Isolated to scattered mainly afternoon and evening
thunderstorms will remain possible each day through the upcoming
weekend, and some of the storms will be capable of producing strong
gusty winds and locally high seas.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 13, 2026 at 0000 UTC...

 42 nautical miles east of Flagler Beach.
 49 nautical miles east of Saint Augustine Beach.
 60 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-140730-
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-
934 PM EDT Thu Aug 13 2026

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

$$

AMZ470-472-474-140730-
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-
934 PM EDT Thu Aug 13 2026

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 3 seconds. A slight chance of
showers and thunderstorms in the evening.
.FRIDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
3 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 4 seconds.
.SATURDAY AND SATURDAY NIGHT...Southwest winds 10 to 15 knots.
Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds.
.SUNDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
8 seconds and south 2 feet at 4 seconds.
.MONDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms in the afternoon.

Winds and seas higher in and near thunderstorms.


$$