950
FZUS52 KJAX 091920
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
220 PM EST Tue Dec 9 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.

AMZ400-101030-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
220 PM EST Tue Dec 9 2025

.SYNOPSIS...

High pressure will gradually weaken as it becomes centered over our
region tonight, allowing for winds and seas to gradually subside.
Westerly winds will then develop and strengthen on Wednesday
afternoon and evening ahead of an approaching dry frontal boundary,
with Small Craft Advisory conditions expected offshore on Wednesday
night. This front will cross our region late Wednesday night,
followed by another high pressure center building towards our region
on Thursday and Friday. This high pressure center will then shift
offshore by early Saturday ahead of the next frontal boundary that
will approach our local waters from the northwest on Sunday
afternoon. This front will likely remain dry as it crosses our local
waters on Sunday night. Strong high pressure building to the north
of our region in the wake of this frontal passage will result in
strengthening northerly winds on Sunday night that will shift to
northeasterly on Monday. Small Craft Advisory conditions are likely
throughout our local waters from Sunday night through Monday
evening.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Dec 06, 2025 at 1200 UTC...

 71 nautical miles east of Flagler Beach.
 74 nautical miles east of Saint Augustine Beach.
 85 nautical miles east southeast of Jacksonville Beach.
 97 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-101030-
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-
220 PM EST Tue Dec 9 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 5 PM EST THIS
AFTERNOON...

.TONIGHT...North winds 10 to 15 knots, becoming northwest around
10 knots after midnight. Seas 3 to 5 feet, occasionally to 6
feet. Wave Detail: Northeast 5 feet at 7 seconds and east 4 feet
at 9 seconds. Intracoastal waters a light chop.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming west and
increasing to around 15 knots in the afternoon. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at 10
seconds and west 2 feet at 3 seconds. Intracoastal waters becoming
a moderate chop.
.WEDNESDAY NIGHT...West winds 15 to 20 knots, becoming northwest
after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: East 4 feet at 10 seconds and southwest 3 feet at 4
seconds. Intracoastal waters choppy.
.THURSDAY...Northwest winds 15 to 20 knots, decreasing to around
10 knots during the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Northwest 3 feet at 4 seconds and east 3
feet at 10 seconds. Intracoastal waters becoming a light chop.
.THURSDAY NIGHT...Northwest winds 5 to 10 knots. Seas 2 to 3
feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet
at 9 seconds. Intracoastal waters mostly smooth.
.FRIDAY...Northwest winds 5 to 10 mph, becoming east southeast
during the afternoon. Seas around 2 feet. Wave Detail: North 2
feet at 3 seconds. Intracoastal waters mostly smooth.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet. Wave Detail: North 2 feet at
3 seconds. Intracoastal waters mostly smooth.
.SATURDAY...West winds around 5 knots, becoming east 5 to 10 knots
during the afternoon. Seas around 2 feet. Intracoastal waters
mostly smooth.
.SATURDAY NIGHT...East northeast winds around 5 knots, becoming
northwest 5 to 10 knots after midnight. Seas 1 to 2 feet.
Intracoastal waters mostly smooth.
.SUNDAY...Northwest winds 10 to 15 knots, becoming north around 15
knots during the afternoon. Seas 2 to 3 feet. Intracoastal waters
becoming a moderate chop.

$$

AMZ470-472-474-101030-
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-
220 PM EST Tue Dec 9 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 5 PM EST THIS
AFTERNOON...

.TONIGHT...North winds around 15 knots, becoming north northwest
around 10 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: Northeast 5 feet at 8 seconds and east 5
feet at 9 seconds.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming west and
increasing to 15 to 20 knots in the afternoon. Seas building to 5
to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet
at 10 seconds and west 3 feet at 4 seconds.
.WEDNESDAY NIGHT...West winds 20 to 25 knots, becoming northwest
after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave
Detail: West 6 feet at 5 seconds and northeast 5 feet at 10
seconds.
.THURSDAY...Northwest winds 15 to 20 knots, diminishing to around
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8
feet. Wave Detail: West 5 feet at 5 seconds and east 3 feet at 10
seconds.
.THURSDAY NIGHT...Northwest winds around 15 knots, diminishing to
around 10 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Northwest 3 feet at 4 seconds and east 2
feet at 9 seconds.
.FRIDAY...Northwest winds 5 to 10 knots, becoming southwest during
the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at
4 seconds and east 2 feet at 9 seconds.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 2 feet at 4 seconds and east 2 feet at 9
seconds.
.SATURDAY...West winds 5 to 10 knots, becoming south southeast
during the afternoon. Seas around 2 feet.
.SATURDAY NIGHT...South winds around 5 knots, becoming northwest
around 10 knots after midnight. Seas around 2 feet.
.SUNDAY...Northwest winds 10 to 15 knots, becoming north 15 to 20
knots during the afternoon. Seas building to 3 to 4 feet,
occasionally to 5 feet.

$$