098
FZUS52 KJAX 210117
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
817 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.

AMZ400-211630-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
817 PM EST Thu Nov 20 2025

.SYNOPSIS...

Weakening high pressure will continue to shift slowly east-
southeastward across the Florida peninsula through Saturday. Dense
sea fog is expected to develop overnight across the Georgia waters,
with this fog potentially extending to the near shore waters
adjacent to northeast Florida on Friday morning before dissipating
by early afternoon. 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 early on
Sunday morning. High pressure will build eastward from the Ozarks on
Sunday towards the Mid-Atlantic states by Monday afternoon, 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 on Wednesday and
Wednesday night, with southerly winds expected to develop ahead of
this front beginning on Tuesday evening.

.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.

$$

AMZ450-452-454-211630-
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-
817 PM EST Thu Nov 20 2025

.REST OF TONIGHT...East winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. Intracoastal waters smooth. Areas
of fog this evening. Widespread dense fog developing after
midnight.
.FRIDAY...West winds around 5 knots, becoming southeast 5 to 10
knots in the afternoon. Waves 1 foot or less. Intracoastal waters
mostly smooth. Widespread dense fog in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet. Intracoastal waters mostly
smooth.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Intracoastal waters mostly smooth.
.SATURDAY NIGHT...West winds 10 to 15 knots, becoming northwest
after midnight. Seas around 2 feet. Intracoastal waters a light
chop.
.SUNDAY...Northwest winds around 10 knots, becoming northeast 10
to 15 knots during the afternoon. Seas around 2 feet. Wave Detail:
Northeast 2 feet at 7 seconds. Intracoastal waters a light chop.
.SUNDAY NIGHT AND MONDAY...Northeast winds 10 to 15 knots,
becoming east northeast during the afternoon. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 7 seconds. Intracoastal waters a
light chop.
.MONDAY NIGHT...East winds 10 to 15 knots, becoming southeast
around 10 knots after midnight. Seas 2 to 3 feet. Intracoastal
waters a light chop.
.TUESDAY...South winds 5 to 10 knots, becoming southeast 10 to 15
knots during the afternoon. Seas 2 to 3 feet. Intracoastal waters
a light chop.

$$

AMZ470-472-474-211630-
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-
817 PM EST Thu Nov 20 2025

.REST OF TONIGHT...Northeast winds around 5 knots, becoming
northwest around 5 knots after midnight. Seas 1 to 2 feet. Areas
of dense fog this evening. Widespread dense fog after midnight.
.FRIDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet
at 6 seconds. Widespread dense fog in the morning.
.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, becoming northwest
after midnight. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet
at 3 seconds.
.SUNDAY...Northwest winds 10 to 15 knots, becoming northeast
during the afternoon. Seas 2 to 3 feet. Wave Detail: North 3 feet
at 5 seconds.
.SUNDAY NIGHT AND MONDAY...Northeast winds 10 to 15 knots,
becoming east northeast during the afternoon. Seas 2 to 3 feet.
Wave Detail: North 3 feet at 5 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots, becoming southeast
after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
.TUESDAY...South southeast winds 10 to 15 knots. Seas 3 to 4
feet, occasionally to 5 feet. A slight chance of showers.

$$