Coastal Waters Forecast
Issued by NWS Jacksonville, FL

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FZUS52 KJAX 211446
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
1046 AM EDT Thu Mar 21 2024

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.

AMZ400-212300-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1046 AM EDT Thu Mar 21 2024

.SYNOPSIS...

High pressure over the area today will shift east through tonight
as a Gulf Low approaches. Rain chances increase Friday morning,
with periods of showers and isolated thunderstorm through
Saturday afternoon as the low crosses the local waters. Winds
increase Friday to Small Craft Advisory levels, with only a brief
lull in Advisory conditions Saturday before a stronger wind surge
develops Saturday night behind the departing low when Small Craft
Advisory conditions return. Occasional gusts to gale force are
possible Friday night and again Saturday night into Sunday. High
pressure builds north and northeast of the of the waters Sunday
into Monday.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Mar 16, 2024 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 94 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.


$$

AMZ450-452-454-212300-
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-
1046 AM EDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE FRIDAY NIGHT...

.REST OF TODAY...Light and variable winds 10 knots or less this
morning, becoming east in the afternoon. Seas around 2 feet with
a dominant period 8 seconds. Intracoastal waters light chop.
.TONIGHT...East winds 10 to 15 knots. Seas around 2 feet with a
dominant period 7 seconds. Intracoastal waters a moderate chop. A
chance of showers after midnight.
.FRIDAY...Southeast winds 15 to 20 knots. Seas 3 to 5 feet with a
dominant period 5 seconds, building to 5 to 7 feet with a
dominant period 5 seconds in the afternoon. Intracoastal waters
choppy. Showers in the morning, then showers likely with isolated
thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds 15 to 20 knots, becoming southwest
10 to 15 knots after midnight. Seas 5 to 7 feet with a dominant
period 8 seconds. Intracoastal waters choppy. Showers likely with
a chance of thunderstorms.
.SATURDAY...West winds 5 to 10 knots. Seas 5 to 7 feet with a
dominant period 9 seconds. Intracoastal waters light chop. A
chance of showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...North winds 15 to 20 knots, increasing to 20 to
25 knots with gusts up to 35 knots after midnight. Seas 4 to
6 feet with a dominant period 9 seconds. Intracoastal waters
rough. A chance of showers and thunderstorms in the evening, then
a slight chance of rain and thunderstorms after midnight.
.SUNDAY...North winds 20 to 25 knots, becoming northeast 15 to
20 knots in the afternoon. Seas 6 to 8 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 6 to 8 feet.
.MONDAY...East winds 10 to 15 knots. Seas 5 to 7 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-212300-
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-
1046 AM EDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
SATURDAY AFTERNOON...

.REST OF TODAY...Light and variable winds 10 knots or less this
morning, becoming east in the afternoon. Seas around 2 feet with
a dominant period 7 seconds.
.TONIGHT...East winds 10 to 15 knots, becoming southeast 15 to
20 knots after midnight. Seas 2 to 4 feet with a dominant period
7 seconds. A chance of showers after midnight.
.FRIDAY...Southeast winds 20 to 25 knots, increasing to 25 to
30 knots in the afternoon. Seas 3 to 5 feet with a dominant
period 7 seconds, building to 6 to 9 feet with a dominant period
7 seconds in the afternoon. Showers. Isolated thunderstorms in
the afternoon.
.FRIDAY NIGHT...South winds 25 to 30 knots, becoming southwest
20 to 25 knots after midnight. Seas 8 to 11 feet with a dominant
period 8 seconds. A chance of thunderstorms. Showers.
.SATURDAY...West winds 15 to 20 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 6 to 9 feet with a dominant
period 9 seconds, subsiding to 6 to 7 feet with a dominant period
9 seconds in the afternoon. A chance of thunderstorms. A chance
of showers in the morning, then rain likely in the afternoon.
.SATURDAY NIGHT...North winds 20 to 25 knots. Gusts up to
35 knots after midnight. Seas 5 to 7 feet with a dominant period
9 seconds. A chance of showers and thunderstorms.
.SUNDAY...Northeast winds 20 to 25 knots. Seas 7 to 9 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 7 to 9 feet.
.MONDAY...East winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 7 to 9 feet.
.MONDAY NIGHT...East winds around 15 knots. Seas 7 to 8 feet.

Winds and seas higher in and near thunderstorms.

$$


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