Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 211358
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
958 AM AST Thu Mar 21 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.

AMZ700-220215-
958 AM AST Thu Mar 21 2024

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Light easterly winds will continue as a cold front lingers north of
the area today. A surface high pressure building over the western
Atlantic will yield moderate to locally fresh east- northeast winds
starting Thursday night, and thus, causing deteriorating marine
conditions during the weekend. These winds will push fragments of
moisture over the local waters.

$$

AMZ711-220215-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
958 AM AST Thu Mar 21 2024

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

$$

AMZ712-220215-
Coastal Waters of Northern Puerto Rico out 10 NM-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Scattered showers.
.TONIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds.
Scattered showers.
.FRIDAY...East winds 15 to 20 knots, increasing to east 15 to 20
knots with gusts up to 25 knots in the afternoon. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant period 10 seconds.
Scattered showers.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
showers.
.SATURDAY...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. Isolated showers.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
showers. Isolated thunderstorms through the night.
.MONDAY...Southeast winds 5 to 10 knots, becoming northwest. Seas
2 to 4 feet with occasional seas around 5 feet. Dominant period 8
seconds. Numerous showers with isolated thunderstorms.

$$

AMZ716-220215-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
958 AM AST Thu Mar 21 2024

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

$$

AMZ723-220215-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant period 10 seconds. Isolated showers.
.TONIGHT...East winds 10 to 15 knots, becoming northeast after
midnight. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated
showers.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Isolated showers.
.FRIDAY NIGHT...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 7 seconds. Scattered showers.
.SATURDAY...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 6 seconds. Isolated showers.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to 25
knots, diminishing to southeast 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant period 7 seconds.
Isolated showers.
.MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
showers with isolated thunderstorms.

$$

AMZ726-220215-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots. Seas around 2 feet or
less. Dominant period 10 seconds. Isolated showers.
.TONIGHT...East winds 10 to 15 knots, becoming northeast after
midnight. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated
showers.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Isolated showers.
.FRIDAY NIGHT...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 10 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 6 seconds. Isolated
showers.
.SUNDAY...Southeast winds 10 to 15 knots. Gusts up to 25 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 7 seconds. Scattered showers. Isolated thunderstorms
through the night.
.MONDAY...Southeast winds 5 to 10 knots, becoming west. Seas 2 to
4 feet with occasional seas around 5 feet. Dominant period 7
seconds. Scattered showers with isolated thunderstorms.

$$

AMZ733-220215-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant period 7 seconds. Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Scattered showers.
.FRIDAY...East winds 10 to 15 knots. Gusts up to 25 knots in the
afternoon. Seas 2 to 4 feet with occasional seas around 5 feet.
Dominant period 10 seconds. Isolated showers.
.FRIDAY NIGHT...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 7 seconds. Isolated showers.
.SATURDAY...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 6 seconds. Isolated showers.
.SUNDAY...Southeast winds 10 to 15 knots. Gusts up to 25 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 7 seconds. Isolated showers. Isolated thunderstorms through
the night.
.MONDAY...Southeast winds 5 to 10 knots, becoming east. Seas 2 to
4 feet with occasional seas around 5 feet. Dominant period 7
seconds. Scattered showers with isolated thunderstorms.

$$

AMZ735-220215-
Coastal Waters of Southern Puerto Rico out 10 NM-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots, becoming southeast this
afternoon. Seas around 2 feet or less. Dominant period 6 seconds.
Isolated showers.
.TONIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet or
less. Dominant period 10 seconds. Scattered showers.
.FRIDAY...East winds 10 to 15 knots. Gusts up to 25 knots in the
afternoon. Seas 2 to 4 feet with occasional seas around 5 feet.
Dominant period 10 seconds. Isolated showers.
.FRIDAY NIGHT...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 7 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 6 seconds. Isolated
showers.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 6 seconds.
Scattered showers. Isolated thunderstorms through the night.
.MONDAY...Southeast winds 5 to 10 knots, becoming northeast. Seas
1 to 3 feet. Dominant period 6 seconds. Isolated thunderstorms
through the day. Scattered showers.

$$

AMZ741-220215-
Mona Passage Southward to 17N-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Isolated showers.
.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 25
knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant period 10 seconds. Isolated showers.
.FRIDAY...East winds 10 to 15 knots. Gusts up to 25 knots in the
afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant period 10 seconds. Scattered showers.
.FRIDAY NIGHT...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 7 seconds. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 6 seconds. Isolated
showers.
.SUNDAY...Southeast winds 10 to 15 knots. Gusts up to 25 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 7 seconds. Isolated showers.
.MONDAY...South winds 5 to 10 knots, becoming north. Seas 2 to 4
feet with occasional seas around 5 feet. Dominant period 7
seconds. Scattered showers with isolated thunderstorms.

$$

AMZ742-220215-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...Northeast winds 10 to 15 knots, becoming north
this afternoon. Seas 1 to 3 feet. Dominant period 10 seconds.
Scattered showers.
.TONIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds.
Scattered showers.
.FRIDAY...East winds 10 to 15 knots. Gusts up to 25 knots in the
afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant period 10 seconds. Numerous showers.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25
knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant period 8 seconds. Scattered showers.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 7 seconds.
Scattered showers.
.SUNDAY...Southeast winds 10 to 15 knots. Gusts up to 25 knots.
Seas 2 to 4 feet with occasional seas around 5 feet. Dominant
period 7 seconds. Isolated showers.
.MONDAY...South winds 5 to 10 knots, becoming northeast. Seas 1 to
3 feet. Dominant period 7 seconds. Scattered showers with isolated
thunderstorms.

$$

AMZ745-220215-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
958 AM AST Thu Mar 21 2024

.REST OF TODAY...Southeast winds 5 to 10 knots, becoming west this
afternoon. Seas around 2 feet or less. Dominant period 7 seconds.
.TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Scattered showers.
.FRIDAY...East winds 10 to 15 knots, becoming southeast in the
afternoon. Seas 2 to 4 feet with occasional seas around 5 feet.
Dominant period 10 seconds. Numerous showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 9 seconds.
Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 7 seconds. Isolated
showers.
.SUNDAY...Southeast 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.
.MONDAY...South winds 5 to 10 knots, becoming east. Seas around 2
feet or less. Dominant period 7 seconds. Scattered showers with
isolated thunderstorms.

$$


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