Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 101347
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
947 AM EDT Mon Aug 10 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.

AMZ400-110500-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
947 AM EDT Mon Aug 10 2026

.SYNOPSIS...

Atlantic high pressure will gradually build westward across our
local waters today and persist through the week. Southwesterly flow
will prevail over the local waters 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 today 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.


$$

AMZ450-452-454-110500-
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-
947 AM EDT Mon Aug 10 2026

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

$$

AMZ470-472-474-110500-
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-
947 AM EDT Mon Aug 10 2026

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

Winds and seas higher in and near thunderstorms.

$$