139
FZUS52 KJAX 230033
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
833 PM EDT Fri Aug 22 2025

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.

AMZ400-231545-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
833 PM EDT Fri Aug 22 2025

.SYNOPSIS...

Long period swells from distant Hurricane Erin will keep combined
seas elevated just below exercise caution levels through the
weekend, especially offshore. Meanwhile, a stationary frontal
boundary over the Georgia waters will remain in place through the
weekend. Rounds of showers and thunderstorms will develop in the
afternoon and early evening hours across the local waters through
Monday. Then, the frontal boundary will shift southward on
Tuesday, stalling across the Florida peninsula towards midweek,
resulting in a decreasing coverage of showers and thunderstorms
for our area by Tuesday and Wednesday.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 21, 2025 at 1200 UTC...

 56 nautical miles east northeast of Flagler Beach.
 54 nautical miles east of Saint Augustine Beach.
 61 nautical miles east of Jacksonville Beach.
 89 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-231545-
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-
833 PM EDT Fri Aug 22 2025

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at
12 seconds and southeast 2 feet at 6 seconds. Intracoastal waters
light chop. A chance of showers. A chance of thunderstorms,
mainly this evening.
.SATURDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 4 feet at 13 seconds and southeast 2 feet at
6 seconds. Intracoastal waters smooth. Showers likely with a
chance of thunderstorms in the morning, then showers with
thunderstorms likely in the afternoon.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
13 seconds and southeast 2 feet at 6 seconds. Intracoastal waters
light chop. Showers likely with a chance of thunderstorms in the
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
12 seconds and southeast 2 feet at 6 seconds. Intracoastal waters
light chop. A chance of showers and thunderstorms in the morning,
then showers with thunderstorms likely in the afternoon.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 14 seconds and southeast 2 feet at
6 seconds. Intracoastal waters light chop. A chance of showers
and thunderstorms, mainly in the evening.
.MONDAY AND MONDAY NIGHT...West winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Northeast 3 feet at 14 seconds and southeast
2 feet at 5 seconds. Intracoastal waters light chop. A chance of
showers and thunderstorms.
.TUESDAY THROUGH WEDNESDAY...Northeast winds 10 to 15 knots. Seas
2 to 3 feet. Intracoastal waters a moderate chop. A chance of
showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-231545-
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-
833 PM EDT Fri Aug 22 2025

.REST OF TONIGHT...Southwest winds 5 to 10 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at
12 seconds and southeast 2 feet at 6 seconds. A chance of
showers. A chance of thunderstorms, mainly this evening.
.SATURDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 5 feet at 13 seconds and southeast 2 feet at 6 seconds.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to
5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at
13 seconds and southeast 2 feet at 6 seconds. Showers with a
chance of thunderstorms.
.SUNDAY...West winds around 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
13 seconds and south 2 feet at 5 seconds. Showers with a chance
of thunderstorms.
.SUNDAY NIGHT...West winds around 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at
14 seconds and south 2 feet at 6 seconds. Showers likely with a
chance of thunderstorms in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.
.MONDAY AND MONDAY NIGHT...West winds 5 to 10 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at
14 seconds and west 2 feet at 4 seconds. A chance of showers and
thunderstorms.
.TUESDAY...North winds 5 to 10 knots. Seas 2 to 3 feet. A chance
of showers.
.WEDNESDAY...Northeast winds around 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms in the morning. A chance of
showers. A chance of thunderstorms. Showers likely after
midnight.

Winds and seas higher in and near thunderstorms.

$$