406
FZCA52 TJSJ 200956 AAA
CWFSJU

Coastal Waters Forecast...UPDATED
National Weather Service San Juan PR
556 AM AST Sun Apr 20 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-202200-
556 AM AST Sun Apr 20 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A surface high pressure system over the western Atlantic will
continue to push remnant showers of a past frontal boundary across
the region while a nearby mid to upper level trough and a surface
trough produces favorable conditions for their development this
morning. This will lead to increased showers and thunderstorms
across the local waters. Increasing northeasterly winds and a weak
northerly swell will maintain hazardous marine conditions into early
next week. A Small Craft Advisory is in effect for the offshore
Atlantic Waters, Mona Passage, and coastal waters of northern and
northwestern Puerto Rico.

$$

AMZ711-202200-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
556 AM AST Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT...

.TODAY...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
7 feet at 8 seconds. Scattered showers early this morning. Isolated
thunderstorms this morning. Isolated showers late this morning and
afternoon.
.TONIGHT...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas around 7 feet, occasionally to 9 feet. Wave Detail: North
7 feet at 8 seconds.
.MONDAY...North winds 10 to 15 knots with gusts up to 25 knots. Seas
6 to 7 feet, occasionally to 9 feet. Wave Detail: North 7 feet at
8 seconds.
.MONDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail:
North 6 feet at 9 seconds. Scattered showers after midnight.
.TUESDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 6 feet, occasionally to 8 feet. Wave Detail: North
6 feet at 9 seconds.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 5 to 6 feet, occasionally to 8 feet.
Wave Detail: North 6 feet at 9 seconds.
.WEDNESDAY...East winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-202200-
Coastal Waters of Northern Puerto Rico out 10 NM-
556 AM AST Sun Apr 20 2025

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

.TODAY...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
6 feet at 9 seconds. Showers with isolated thunderstorms this
morning, then isolated showers this afternoon.
.TONIGHT...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 6 to 7 feet, occasionally to 9 feet.
Wave Detail: North 6 feet at 8 seconds.
.MONDAY...North winds 10 to 15 knots with gusts up to 25 knots. Seas
around 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet at
8 seconds.
.MONDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
North 6 feet at 9 seconds. Scattered showers after midnight.
.TUESDAY...Northeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet.
Wave Detail: North 6 feet at 9 seconds. Scattered showers in the
morning.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: North 6 feet at 9 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-202200-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
556 AM AST Sun Apr 20 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...Northeast winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast
6 feet at 8 seconds. Numerous showers with isolated thunderstorms
this morning, then scattered showers early this afternoon. Isolated
showers late.
.TONIGHT...North winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast
6 feet at 8 seconds.
.MONDAY...North winds around 15 knots with gusts up to 20 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet
at 8 seconds.
.MONDAY NIGHT...North winds 10 to 15 knots with gusts up to
20 knots, becoming northeast 5 to 10 knots after midnight. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at
8 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at 9 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at 9 seconds.
.WEDNESDAY...East winds around 5 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ723-202200-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
556 AM AST Sun Apr 20 2025

.TODAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 8 seconds. Numerous showers this morning. Isolated
thunderstorms. Scattered showers this afternoon.
.TONIGHT...North winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast
5 feet at 8 seconds. Scattered showers in the evening.
.MONDAY...North winds around 15 knots with gusts up to 25 knots.
Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet
at 9 seconds.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: North 5 feet at 9 seconds and
northwest 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at 9 seconds
and northwest 1 foot at 4 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: North 4 feet at 9 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ726-202200-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
556 AM AST Sun Apr 20 2025

.TODAY...Northeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
3 feet at 5 seconds. Numerous showers this morning. Isolated
thunderstorms. Scattered showers this afternoon.
.TONIGHT...North winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
4 feet at 5 seconds.
.MONDAY...North winds 10 to 15 knots with gusts up to 25 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet
at 7 seconds.
.MONDAY NIGHT...North winds 10 to 15 knots, becoming northeast 5 to
10 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet.
Wave Detail: Northeast 3 feet at 6 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ733-202200-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
556 AM AST Sun Apr 20 2025

.TODAY...Northeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 5 seconds. Numerous showers this morning. Isolated
thunderstorms. Scattered showers this afternoon.
.TONIGHT...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet
at 6 seconds. Scattered showers in the evening.
.MONDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: North 4 feet at
6 seconds.
.MONDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Wave Detail: North 4 feet at 6 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds
and northwest 2 feet at 6 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Northeast 2 feet at 8 seconds
and northwest 1 foot at 7 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ735-202200-
Coastal Waters of Southern Puerto Rico out 10 NM-
556 AM AST Sun Apr 20 2025

.TODAY...Northeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet
at 5 seconds. Scattered showers with isolated thunderstorms early
this morning. Isolated showers late this morning and afternoon.
Isolated thunderstorms late.
.TONIGHT...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet
at 5 seconds.
.MONDAY...North winds 10 to 15 knots with gusts up to 25 knots. Seas
2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 3 feet
at 6 seconds.
.MONDAY NIGHT...North winds 10 to 15 knots with gusts up to
25 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
3 feet, occasionally to 4 feet. Wave Detail: Northeast 2 feet at
6 seconds.
.TUESDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers in the
afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 2 feet at 6 seconds.
Scattered showers in the evening.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas around 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ741-202200-
Mona Passage Southward to 17N-
556 AM AST Sun Apr 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT...

.TODAY...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
6 feet at 7 seconds. Scattered showers with isolated thunderstorms
early this morning. Isolated showers late this morning and
afternoon.
.TONIGHT...Northeast winds 20 to 25 knots with gusts up to 30 knots.
Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
7 feet at 8 seconds. Scattered showers in the evening.
.MONDAY...North winds 15 to 20 knots with gusts up to 30 knots. Seas
5 to 7 feet, occasionally to 9 feet. Wave Detail: North 7 feet at
8 seconds.
.MONDAY NIGHT...North winds 15 to 20 knots, becoming northeast 10 to
15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: North 6 feet at 8 seconds.
Scattered showers after midnight.
.TUESDAY...Northeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet.
Wave Detail: Northeast 5 feet at 8 seconds. Scattered showers in the
morning.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Northeast 5 feet at 9 seconds. Scattered showers.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-202200-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
556 AM AST Sun Apr 20 2025

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

.TODAY...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
6 feet at 8 seconds. Scattered showers early this morning, then
isolated showers late this morning and afternoon.
.TONIGHT...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet
at 8 seconds.
.MONDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas
4 to 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet at
8 seconds.
.MONDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet.
Wave Detail: North 6 feet at 8 seconds. Scattered showers after
midnight.
.TUESDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet
at 8 seconds. Scattered showers in the morning.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: North 6 feet at 9 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
.THURSDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Scattered showers in the afternoon.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.

$$

AMZ745-202200-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
556 AM AST Sun Apr 20 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...Northeast winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet
at 9 seconds and east 2 feet at 6 seconds. Isolated showers this
afternoon.
.TONIGHT...Northeast winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
4 feet at 7 seconds.
.MONDAY...North winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at
7 seconds and east 3 feet at 6 seconds.
.MONDAY NIGHT...North winds 15 to 20 knots, becoming northeast 10 to
15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: North 4 feet at 7 seconds. Scattered showers after
midnight.
.TUESDAY...Northeast winds around 5 knots, becoming north 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet, occasionally to 4 feet. Wave Detail: North 3 feet at
8 seconds. Scattered showers.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: North 3 feet at 8 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming northwest in
the afternoon. Seas 2 to 3 feet, occasionally to 4 feet.
.WEDNESDAY NIGHT...Northeast winds around 5 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.THURSDAY...Southeast winds around 5 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

$$