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State Road 312, FL - Matanzas River Coastal Forecast

FZUS52 KJAX 280033
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
733 PM EST Sat Dec 27 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.

AMZ400-281300-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
733 PM EST Sat Dec 27 2025

.SYNOPSIS...

High pressure will remain centered over the southeast Gulf and
southern Florida peninsula through the weekend. High pressure will
then weaken and slide southward on Sunday night ahead of a strong
cold front. West-southwest winds increase to Caution levels on
Monday ahead of the approaching cold front. Winds shift to northwest
and strengthen to Small Craft Advisory levels Monday night into
Tuesday in the wake of the frontal passage. West northwest winds
continue for much of next week as high pressure builds eastward
along the northern Gulf coast.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Dec 27, 2025 at 0000 UTC...

50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.

$$

AMZ450-452-454-281300-
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-
733 PM EST Sat Dec 27 2025

.REST OF TONIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 12 seconds. Intracoastal waters light
chop.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
11 seconds. Intracoastal waters smooth. Patchy fog early in the
morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 3 seconds and east 2 feet at
11 seconds. Intracoastal waters light chop.
.MONDAY...Southwest winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southwest 3 feet at
4 seconds and east 3 feet at 11 seconds. Intracoastal waters a
moderate chop. A slight chance of showers in the afternoon.
.MONDAY NIGHT...Northwest winds 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northwest 5 feet at
5 seconds and east 3 feet at 12 seconds. Intracoastal waters
rough. A slight chance of showers in the evening.
.TUESDAY...Northwest winds 20 to 25 knots, diminishing to around
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Northwest 5 feet at 5 seconds and northeast
2 feet at 11 seconds. Intracoastal waters rough.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots. Seas 2 to
4 feet, occasionally to 5 feet. Intracoastal waters choppy.
.WEDNESDAY THROUGH THURSDAY...West winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Intracoastal waters a
moderate chop.

$$

AMZ470-472-474-281300-
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-
733 PM EST Sat Dec 27 2025

.REST OF TONIGHT...West winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 3 feet at 12
seconds and west 2 feet at 3 seconds.
.SUNDAY...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 11 seconds.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet after midnight. Wave Detail: East
3 feet at 11 seconds and southwest 2 feet at 3 seconds, becoming
southwest 3 feet at 4 seconds and northeast 3 feet at 11 seconds.
.MONDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southwest 4 feet at
4 seconds and northeast 4 feet at 12 seconds. A slight chance of
showers in the afternoon.
.MONDAY NIGHT...Northwest winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northwest 7 feet at
6 seconds and northeast 3 feet at 11 seconds. A slight chance of
showers in the evening.
.TUESDAY...Northwest winds 20 to 25 knots, diminishing to 15 to
20 knots in the afternoon. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Northwest 7 feet at 6 seconds and east
2 feet at 11 seconds.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots. Seas 3 to
5 feet, occasionally to 6 feet.
.WEDNESDAY THROUGH THURSDAY...West winds 15 to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet.

$$


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