Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 121421
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
1021 AM AST Fri Apr 12 2024

Puerto Rico and the U.S. Virgin Islands Waters

Seas are provided as a range of the average height of the
highest 1/3 of the Seas...Along with the occasional height
of the average highest 10 percent of the Seas.

AMZ700-130330-
1021 AM AST Fri Apr 12 2024

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A surface ridge over the north-central Atlantic and the remnants of
a front will continue to generate fresh to locally strong east-
northeasterly winds into the weekend. This will bring periods of
passing showers and gusty winds across the regional waters. A fading
northerly swell and choppy wind-driven seas will continue to promote
hazardous conditions to small craft.

$$

AMZ711-130330-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 30
knots. Seas 6 to 8 feet with occasional seas up to 10 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Gusts up to 30 knots. Seas
5 to 7 feet with occasional seas up to 9 feet. Dominant period 8
seconds. Isolated showers.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25
knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 8 seconds. Scattered showers.
.SUNDAY...Northeast winds 10 to 15 knots. Gusts up to 25 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 8 seconds. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 9 seconds. Numerous
showers. Isolated thunderstorms through the night.
.TUESDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 8 seconds.
Scattered showers with isolated thunderstorms.

$$

AMZ712-130330-
Coastal Waters of Northern Puerto Rico out 10 NM-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 25
knots. Seas 6 to 8 feet with occasional seas up to 10 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds.
Scattered showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 10 seconds. Numerous showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 10 seconds. Numerous showers. Isolated thunderstorms
through the night.
.TUESDAY...East winds 15 to 20 knots, increasing to east 15 to 20
knots with gusts up to 30 knots. Seas 6 to 8 feet with occasional
seas up to 10 feet. Dominant period 7 seconds. Scattered showers
with isolated thunderstorms.

$$

AMZ716-130330-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 30
knots. Seas 6 to 8 feet with occasional seas up to 10 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 25 knots,
diminishing to east 15 to 20 knots in the afternoon. Seas 4 to 6
feet with occasional seas up to 8 feet. Dominant period 11
seconds. Isolated showers.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots, becoming east
with gusts up to 25 knots after midnight. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Scattered showers.
.SUNDAY...East winds 15 to 20 knots, increasing to east 15 to 20
knots with gusts up to 25 knots. Seas 4 to 6 feet with occasional
seas up to 8 feet. Dominant period 11 seconds. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds. Numerous
showers. Isolated thunderstorms through the night.
.TUESDAY...East winds 20 to 25 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 10 seconds,
subsiding to 7 seconds. Scattered showers with isolated
thunderstorms.

$$

AMZ723-130330-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 30
knots. Seas 8 to 10 feet with occasional seas up to 11 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 30 knots,
diminishing to east 15 to 20 knots in the afternoon. Seas 5 to 7
feet with occasional seas up to 9 feet. Dominant period 7 seconds.
Isolated showers.
.SATURDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 10 seconds. Scattered showers.
.SUNDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 11 seconds, decreasing to 7 seconds. Scattered showers.
.MONDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 7 seconds. Numerous showers with isolated thunderstorms.
.TUESDAY...East winds 20 to 25 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 7 seconds. Scattered
showers with isolated thunderstorms.

$$

AMZ726-130330-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 30
knots. Seas 6 to 8 feet with occasional seas up to 10 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 25 knots,
diminishing to east 15 to 20 knots in the afternoon. Seas 4 to 6
feet with occasional seas up to 8 feet. Dominant period 7 seconds.
Isolated showers.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Gusts up to 25
knots after midnight. Seas 3 to 5 feet with occasional seas up to
6 feet. Dominant period 10 seconds. Scattered showers.
.SUNDAY...East winds 15 to 20 knots, increasing to east 15 to 20
knots with gusts up to 25 knots. Seas 3 to 5 feet with occasional
seas up to 6 feet. Dominant period 11 seconds. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Numerous
showers. Isolated thunderstorms through the night.
.TUESDAY...East winds 20 to 25 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Numerous
showers with isolated thunderstorms.

$$

AMZ733-130330-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 30
knots. Seas 5 to 7 feet with occasional seas up to 9 feet.
Dominant period 7 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Numerous showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 7 seconds. Scattered showers.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 7 seconds. Scattered showers.
.SUNDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 6 seconds. Scattered
showers. Isolated thunderstorms through the night.
.TUESDAY...East winds 15 to 20 knots. Gusts up to 30 knots. Seas 3
to 5 feet with occasional seas up to 6 feet. Dominant period 7
seconds. Scattered showers with isolated thunderstorms.

$$

AMZ735-130330-
Coastal Waters of Southern Puerto Rico out 10 NM-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 25
knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 7 seconds. Numerous showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 7 seconds. Numerous showers.
.SATURDAY...East winds 15 to 20 knots. Gusts up to 30 knots. Seas
4 to 6 feet with occasional seas up to 8 feet. Dominant period 7
seconds. Isolated showers.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25
knots, becoming northeast after midnight. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 4 feet with occasional seas around 5 feet. Dominant
period 6 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Gusts up to 25 knots. Seas 2
to 4 feet with occasional seas around 5 feet. Dominant period 6
seconds. Isolated showers. Isolated thunderstorms through the
night.
.TUESDAY...East winds 15 to 20 knots, becoming northeast with
gusts up to 25 knots. Seas 2 to 4 feet with occasional seas around
5 feet. Dominant period 6 seconds. Scattered showers with isolated
thunderstorms.

$$

AMZ741-130330-
Mona Passage Southward to 17N-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to 25
knots. Seas 5 to 7 feet with occasional seas up to 9 feet.
Dominant period 10 seconds. Scattered showers.
.TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 10 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 8 seconds. Scattered showers.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25
knots. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 11 seconds. Isolated showers.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 11 seconds. Isolated
showers.
.TUESDAY...East winds 15 to 20 knots, becoming northeast with
gusts up to 30 knots. Seas 5 to 7 feet with occasional seas up to
9 feet. Dominant period 11 seconds. Isolated showers. Isolated
thunderstorms through the night.

$$

AMZ742-130330-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
1021 AM AST Fri Apr 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 10 to 15 knots. Gusts up to 25 knots
late this morning. Seas 5 to 7 feet with occasional seas up to 9
feet. Dominant period 10 seconds. Numerous showers.
.TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant
period 11 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots, becoming northeast in the
afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 11 seconds. Isolated showers.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Gusts up to 25
knots in the evening. Seas 3 to 5 feet with occasional seas up to
6 feet. Dominant period 11 seconds. Isolated showers.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Scattered showers.
.MONDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 11 seconds. Scattered showers.
.TUESDAY...Northeast winds 15 to 20 knots, increasing to northeast
15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Scattered showers with isolated thunderstorms.

$$

AMZ745-130330-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
1021 AM AST Fri Apr 12 2024

.REST OF TODAY...East winds 10 to 15 knots, increasing to east 10
to 15 knots with gusts up to 25 knots this afternoon. Seas 2 to 4
feet with occasional seas around 5 feet. Dominant period 10
seconds. Scattered showers.
.TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots,
diminishing to east 10 to 15 knots after midnight. Seas 2 to 4
feet with occasional seas around 5 feet. Dominant period 10
seconds. Isolated showers.
.SATURDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 11 seconds.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant period 10 seconds. Isolated showers.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant period 11 seconds. Scattered showers.
.MONDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.
.TUESDAY...East winds 10 to 15 knots, becoming northeast. Seas 1
to 3 feet. Dominant period 10 seconds, subsiding to 7 seconds.
Scattered showers with isolated thunderstorms.

$$


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