520
FZUS52 KJAX 201729
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1229 PM EST Thu Nov 20 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.

AMZ400-210800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1229 PM EST Thu Nov 20 2025

.SYNOPSIS...

High pressure ridging over the Florida panhandle will weaken while
shifting slowly southeastward by Friday afternoon and Saturday. A
weakening and mostly dry frontal boundary will then push southward
through the Georgia waters on Saturday night, with this boundary
pushing across the northeast FL waters on Sunday morning. High
pressure will build east-southeastward from the Upper Midwest on
Sunday night towards the Mid-Atlantic states by early Tuesday, with
breezy onshore winds developing across our local waters from Sunday
afternoon through Monday afternoon. A stronger cold front may then
push eastward across the southeastern states next Wednesday and
Wednesday night, with southerly winds expected to develop ahead of
this front beginning on Tuesday.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Nov 18, 2025 at 1200 UTC...

 50 nautical miles east of Flagler Beach.
 59 nautical miles east of Saint Augustine Beach.
 76 nautical miles east of Jacksonville Beach.
 85 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-210800-
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-
1229 PM EST Thu Nov 20 2025

.REST OF TODAY...North winds around 5 knots, becoming northeast
this afternoon. Seas around 2 feet. Intracoastal waters smooth.
.TONIGHT...East winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. Intracoastal waters smooth. Areas
of dense fog after midnight.
.FRIDAY...West winds around 5 knots, becoming southeast around
5 knots in the afternoon. Waves 1 foot or less. Intracoastal
waters smooth. Areas of dense fog in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet. Intracoastal waters light
chop.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters light chop.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters light chop.
.SUNDAY THROUGH MONDAY...Southeast winds 10 to 15 knots. Seas
2 to 3 feet. Intracoastal waters a moderate chop.

$$

AMZ470-472-474-210800-
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-
1229 PM EST Thu Nov 20 2025

.REST OF TODAY...North winds 5 to 10 knots. Seas around 2 feet.
.TONIGHT...Northeast winds around 5 knots, becoming northwest
around 5 knots after midnight. Seas around 2 feet in the evening,
then 1 foot or less.
.FRIDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet
at 6 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southwest 2 feet at 3 seconds and northeast 2 feet at 6 seconds.
.SATURDAY...Southwest winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 3 seconds and northeast 2 feet
at 7 seconds.
.SATURDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 3 seconds.
.SUNDAY THROUGH MONDAY...Southeast winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet.

$$