

947 

FZCA52 TJSJ 291233

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

833 AM AST Fri Jan 29 2021



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.



AMZ700-300100-

833 AM AST Fri Jan 29 2021



.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...

Light to moderate east to northeast trade winds will prevail, 

increasing during the weekend as a front moves across the region. 

Seas will continue to improve today. However, a dominant long period

northerly swell is forecast to invade the Atlantic waters beginning 

late tonight and continuing into early next week. This along with 

increasing trade winds will result in choppy and very hazardous seas 

through the upcoming weekend across much of the local waters and 

passages.



$$



AMZ710-300100-

Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-

833 AM AST Fri Jan 29 2021



...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH

TUESDAY EVENING...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 12 seconds.

Northeast swell around 4 Feet. Isolated showers through the day.

.TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet building to 10 to 12 feet with

occasional seas up to 15 feet after midnight. Dominant period 12

seconds. North swell 4 to 9 feet. Scattered showers.

.SATURDAY...Northeast winds 15 to 20 knots. Seas 10 to 12 feet

with occasional seas up to 15 feet. Dominant period 13 seconds.

North swell 6 to 11 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 10 to 11 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 9 to 10 feet. Scattered showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 13 seconds. North

swell 4 to 9 feet. Isolated showers.

.TUESDAY...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 12 seconds. East

swell 4 to 7 feet. Isolated showers.



$$



AMZ712-300100-

Coastal Waters of Northern Puerto Rico out 10 NM-

833 AM AST Fri Jan 29 2021



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

MONDAY NIGHT...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 12 seconds.

Isolated showers.

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet building to 8 to 10 feet with

occasional seas up to 11 feet after midnight. Dominant period 14

seconds. North swell 4 to 8 feet after midnight. Scattered

showers.

.SATURDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 5 to 10 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 9 to 11 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 8 to 10 feet. Scattered showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 13 seconds. North

swell 4 to 9 feet. Isolated showers.

.TUESDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet with

occasional seas up to 8 feet. Dominant period 13 seconds. North

swell 4 to 6 feet. Isolated showers.



$$



AMZ715-300100-

Coastal Waters of Northern USVI and Culebra out 10 NM-

833 AM AST Fri Jan 29 2021



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

TUESDAY MORNING...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Isolated showers through the day.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 12 seconds.

Scattered showers.

.SATURDAY...Northeast winds 15 to 20 knots. Seas 10 to 12 feet

with occasional seas up to 14 feet. Dominant period 14 seconds.

North swell 5 to 10 feet. Numerous showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 5 to 10 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 13 seconds. North

swell 5 to 10 feet. Isolated showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 12 seconds. North

swell 4 to 9 feet. Isolated showers.

.TUESDAY...Southeast winds 10 to 15 knots. Seas 4 to 7 feet with 

occasional seas up to 8 feet. Dominant period 11 seconds. North swell

4 to 6 feet. Isolated showers.



$$



AMZ722-300100-

Anegada Passage Southward to 17N-

833 AM AST Fri Jan 29 2021



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

TUESDAY AFTERNOON...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Scattered showers.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 14 seconds. North

swell around 4 feet after midnight. Scattered showers.

.SATURDAY...East winds 10 to 15 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 14 seconds. North

swell 4 to 8 feet. Numerous showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 15

seconds. North swell 4 to 9 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 14 seconds. North

swell 6 to 9 feet. Isolated showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 13 seconds. North

swell 4 to 8 feet. Isolated showers.

.TUESDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 12 seconds.

Northeast swell 5 to 7 feet. Isolated showers.



$$



AMZ725-300100-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

833 AM AST Fri Jan 29 2021



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

LATE MONDAY NIGHT...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Isolated showers through the day.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 11 seconds.

Scattered showers.

.SATURDAY...Northeast winds 10 to 15 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 12 seconds.

Northeast swell 4 to 7 feet. Numerous showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 12

seconds. Northeast swell 4 to 8 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 12 seconds.

Northeast swell 4 to 8 feet. Isolated showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 12 seconds. North

swell 4 to 8 feet. Scattered showers.

.TUESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with

occasional seas up to 8 feet. Dominant period 11 seconds. East

swell 4 to 5 feet. Isolated showers.



$$



AMZ732-300100-

Caribbean Waters of Puerto Rico from 10 NM to 17N-

833 AM AST Fri Jan 29 2021



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

TUESDAY AFTERNOON...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Isolated showers.

.TONIGHT...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 12 seconds.

Scattered showers.

.SATURDAY...East winds 15 to 20 knots. Seas 4 to 7 feet with

occasional seas up to 8 feet. Dominant period 12 seconds. North

swell 4 to 5 feet. Numerous showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet

with occasional seas up to 9 feet. Dominant period 13 seconds.

North swell 4 to 7 feet. Numerous showers.

.SUNDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 13 seconds. North

swell 4 to 7 feet. Isolated showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 12 seconds. North

swell 4 to 7 feet. Isolated showers.

.TUESDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 11 seconds. East

swell 4 to 6 feet. Isolated showers.



$$



AMZ735-300100-

Coastal Waters of Southern Puerto Rico out 10 NM-

833 AM AST Fri Jan 29 2021



.REST OF TODAY...Northeast winds 5 to 10 knots veering east in the

afternoon. Seas 1 to 3 feet. Dominant period 7 seconds.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers through the night.

.SATURDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 11 seconds.

Southeast swell around 4 feet in the afternoon. Scattered showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet

with occasional seas up to 8 feet. Dominant period 11 seconds.

Southeast swell 4 to 5 feet. Scattered showers.

.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 11 seconds.

Southeast swell 4 to 5 feet. Scattered showers.

.MONDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with

occasional seas up to 8 feet. Dominant period 10 seconds. Isolated

showers.

.TUESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 8 seconds. Isolated

showers.



$$



AMZ741-300100-

Mona Passage Southward to 17N-

833 AM AST Fri Jan 29 2021



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

TUESDAY AFTERNOON...



.REST OF TODAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Isolated showers through the day.

.TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 12 seconds. East

swell around 4 feet shifting to the north 4 to 7 feet after

midnight. Isolated showers through the night.

.SATURDAY...Northeast winds 15 to 20 knots. Seas 10 to 12 feet

with occasional seas up to 14 feet. Dominant period 13 seconds.

North swell 5 to 10 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 5 to 10 feet. Scattered showers.

.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 13 seconds. North

swell 6 to 10 feet. Scattered showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 12 seconds. North

swell 4 to 8 feet. Isolated showers.

.TUESDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 11 seconds.

Northeast swell 4 to 6 feet. Isolated showers.



$$



AMZ742-300100-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

833 AM AST Fri Jan 29 2021



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

LATE MONDAY NIGHT...



.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 11 seconds.

Isolated showers.

.TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 12 seconds. North

swell around 4 feet after midnight. Isolated showers.

.SATURDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 4 to 8 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 12

seconds. North swell 5 to 10 feet. Scattered showers.

.SUNDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 12 seconds. North

swell 4 to 9 feet. Scattered showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 12 seconds. North

swell 4 to 7 feet. Isolated showers.

.TUESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 11 seconds.

Northeast swell 4 to 5 feet. Isolated showers.



$$



AMZ745-300100-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

833 AM AST Fri Jan 29 2021



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

MONDAY EVENING...



.REST OF TODAY...Northeast winds 5 to 10 knots veering southeast

in the afternoon. Seas 1 to 3 feet. Dominant period 8 seconds.

.TONIGHT...Northeast winds 15 to 20 knots. Seas 1 to 3 feet.

Dominant period 11 seconds.

.SATURDAY...Northeast winds 15 to 20 knots veering southeast in

the afternoon. Seas 6 to 8 feet with occasional seas up to 10

feet. Dominant period 13 seconds. Northwest swell 4 to 7 feet.

Scattered showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 12

seconds. North swell 4 to 9 feet. Scattered showers.

.SUNDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 13 seconds. North

swell 4 to 8 feet. Scattered showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 4 to 7 feet with 

occasional seas up to 8 feet. Dominant period 12 seconds. North swell

4 to 6 feet. Isolated showers.

.TUESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 11 seconds. South

swell 4 to 5 feet. Isolated showers.



$$

