Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 121253
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
853 AM AST Tue Mar 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.

AMZ700-130115-
853 AM AST Tue Mar 12 2024

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A building surface high pressure spreading eastward across the western
Atlantic will yield moderate easterly winds today, and moderate to
fresh winds from Wednesday onwards. Northerly swells will continue to
arrive and spread across the local waters today. This will create hazardous
seas for small craft across the Atlantic waters by this evening, followed
by the coastal Atlantic waters and local passages on Wednesday. Small
Craft Advisories are in effect for these areas.

$$

AMZ711-130115-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TODAY...East winds 10 to 15 knots. Seas building 5 to 7
feet with occasional seas up to 9 feet. Dominant period 14 seconds.
Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 14 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Gusts up to 25 knots in
the afternoon. Seas 6 to 8 feet with occasional seas up to 10
feet. Dominant period 13 seconds. Isolated showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25
knots. Seas 6 to 8 feet with occasional seas up to 10 feet.
Dominant period 12 seconds.
.THURSDAY...East winds 15 to 20 knots, becoming northeast. Seas 5
to 7 feet with occasional seas up to 9 feet. Dominant period 11
seconds.
.FRIDAY...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. Scattered 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 6 seconds. Scattered showers.

$$

AMZ712-130115-
Coastal Waters of Northern Puerto Rico out 10 NM-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM AST THIS EVENING
THROUGH THURSDAY EVENING...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 14 seconds. Isolated
showers.
.TONIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 14 seconds.
.WEDNESDAY...East winds 15 to 20 knots, increasing to east 15 to
20 knots with gusts up to 30 knots in the afternoon. Seas 6 to 8
feet with occasional seas up to 10 feet. Dominant period 13
seconds. Isolated showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25
knots, diminishing to east 15 to 20 knots after midnight. Seas 6
to 8 feet with occasional seas up to 10 feet. Dominant period 12
seconds. Isolated showers.
.THURSDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 11 seconds. Isolated
showers.
.FRIDAY...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 11 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 6 seconds. Isolated showers.

$$

AMZ716-130115-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds. Isolated
showers.
.TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds. Isolated
showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 6 to 8 feet
with occasional seas up to 10 feet. Dominant period 12 seconds.
Isolated showers.
.THURSDAY...East winds 15 to 20 knots, becoming northeast. Seas 5
to 7 feet with occasional seas up to 9 feet. Dominant period 11
seconds. Isolated showers.
.FRIDAY...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 11 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 7 seconds. Isolated showers.

$$

AMZ723-130115-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
.TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds. Isolated
showers.
.WEDNESDAY...East winds 10 to 15 knots. Gusts up to 25 knots in
the morning. Seas 4 to 6 feet with occasional seas up to 8 feet.
Dominant period 12 seconds. Isolated showers.
.WEDNESDAY 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.
.THURSDAY...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. Scattered showers.
.FRIDAY...Northeast 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 11 seconds, subsiding to 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 6 seconds. Isolated showers.

$$

AMZ726-130115-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
853 AM AST Tue Mar 12 2024

.REST OF TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 12 seconds.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 12 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. Isolated
showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Gusts up to 25 knots
after midnight. Seas 4 to 6 feet with occasional seas up to 8
feet. Dominant period 11 seconds. Isolated showers.
.THURSDAY...East winds 15 to 20 knots, becoming northeast. Seas 4
to 6 feet with occasional seas up to 8 feet. Dominant period 11
seconds. Isolated showers.
.FRIDAY...Northeast 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. Isolated 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.

$$

AMZ733-130115-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
853 AM AST Tue Mar 12 2024

.REST OF TODAY...East winds 10 to 15 knots. Gusts up to 25 knots
this afternoon. Seas 2 to 4 feet with occasional seas around 5
feet. Dominant period 10 seconds.
.TONIGHT...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.
.WEDNESDAY...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 7 seconds. Isolated showers.
.WEDNESDAY 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 11 seconds. Isolated showers.
.THURSDAY...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 11 seconds. Isolated showers.
.FRIDAY...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 6 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 6 seconds. Isolated showers.

$$

AMZ735-130115-
Coastal Waters of Southern Puerto Rico out 10 NM-
853 AM AST Tue Mar 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.
.TONIGHT...East winds 10 to 15 knots. Gusts up to 25 knots in the
evening. Seas 2 to 4 feet with occasional seas around 5 feet.
Dominant period 7 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 7 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Gusts up to 25 knots
in the evening. Seas 2 to 4 feet with occasional seas around 5
feet. Dominant period 10 seconds.
.THURSDAY...East winds 15 to 20 knots, becoming northeast. Seas 3
to 5 feet with occasional seas up to 6 feet. Dominant period 10
seconds, decreasing to 7 seconds. Isolated showers.
.FRIDAY...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 6 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant
period 6 seconds. Isolated showers.

$$

AMZ741-130115-
Mona Passage Southward to 17N-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM AST THIS EVENING
THROUGH THURSDAY EVENING...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 12 seconds. Isolated
showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 12 seconds. Isolated
showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant period 12 seconds.
Isolated showers.
.THURSDAY...East winds 15 to 20 knots, becoming northeast. Gusts
up to 30 knots. Seas 5 to 7 feet with occasional seas up to 9
feet. Dominant period 11 seconds. Isolated showers.
.FRIDAY...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, decreasing to 7 seconds. Isolated showers.
.SATURDAY...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. Isolated showers.

$$

AMZ742-130115-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
853 AM AST Tue Mar 12 2024

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant period 12 seconds.
.TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant
period 13 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 13 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant period 12 seconds.
Isolated showers.
.THURSDAY...Northeast winds 15 to 20 knots, increasing to
northeast 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7
feet with occasional seas up to 9 feet. Dominant period 11
seconds. Scattered showers.
.FRIDAY...Northeast winds 15 to 20 knots with gusts up to 30
knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant period 10 seconds. Scattered showers.
.SATURDAY...East winds 10 to 15 knots. Gusts up to 25 knots. Seas
3 to 5 feet with occasional seas up to 6 feet. Dominant period 8
seconds. Scattered showers.

$$

AMZ745-130115-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
853 AM AST Tue Mar 12 2024

.REST OF TODAY...Northeast winds 5 to 10 knots, becoming southeast
this afternoon. Seas 2 to 4 feet with occasional seas around 5
feet. Dominant period 11 seconds.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 13 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 13 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant period 12 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. Isolated
showers.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 10 seconds.
Isolated showers.
.SATURDAY...East winds 15 to 20 knots with gusts up to 25 knots,
diminishing to east 15 to 20 knots. Seas 2 to 4 feet with
occasional seas around 5 feet. Dominant period 8 seconds. Isolated
showers.

$$


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