581
FZUS52 KJAX 091826
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
226 PM EDT Sun Aug 9 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.

AMZ400-100900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
226 PM EDT Sun Aug 9 2026

.SYNOPSIS...

Weak troughing situated along the southeastern seaboard will
continue to progress northeastward tonight, with Atlantic high
pressure slowly building westward across our local waters through
Monday. Scattered thunderstorms will develop close to the near shore
waters this afternoon hours. A few stronger storms will be possible,
with briefly gusty winds, frequent lightning strikes, and torrential
downpours through early this evening. Southwesterly flow will then
prevail beginning on Monday, with an afternoon sea breeze developing
over the near shore waters each afternoon, followed by a southerly
evening wind surge. Winds and seas are forecast to remain below
Caution levels this week. Only isolated afternoon and evening
thunderstorms are forecast from Monday through Friday, mainly
impacting the near shore waters.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 09, 2026 at 0000 UTC...

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

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-100900-
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 9 2026

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 8 seconds and southeast
2 feet at 3 seconds. Intracoastal waters a moderate chop. A
slight chance of showers and thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 8 seconds and south 2 feet at
4 seconds. Intracoastal waters a moderate chop. A slight chance
of showers in the evening.
.MONDAY...South winds around 5 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 7 seconds. Intracoastal waters a moderate
chop.
.MONDAY NIGHT...South winds 10 to 15 knots, becoming southwest
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 7 seconds and south 2 feet at 4 seconds.
Intracoastal waters a moderate chop.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 7 seconds. Intracoastal waters a moderate
chop. A slight chance of showers and thunderstorms in the
afternoon.
.TUESDAY NIGHT...South winds 10 to 15 knots, becoming southwest
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal
waters a moderate chop.
.WEDNESDAY THROUGH THURSDAY...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.

$$

AMZ470-472-474-100900-
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 9 2026

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas around
3 feet. Wave Detail: East 3 feet at 8 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at
8 seconds and south 2 feet at 3 seconds.
.MONDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds and south 2 feet at
3 seconds.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at
4 seconds and southeast 2 feet at 7 seconds.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 4 seconds and southeast
2 feet at 7 seconds. A slight chance of showers and thunderstorms
in the evening.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$