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413 

FZCA52 TJSJ 251437

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

1037 AM AST Fri Sep 25 2020



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.



AMZ700-260345-

1037 AM AST Fri Sep 25 2020



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

Long dominant period northerly swell will continue gradually diminish

throughout the day. Consequently, hazardous seas will continue across

the Atlantic waters and passages. Winds are forecast to become more 

easterly today. Showers and thunderstorms may continue to affect 

portions of the coastal waters of Puerto Rico during the afternoon 

hours.



$$



AMZ710-260345-

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

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM AST THIS AFTERNOON...

...SMALL CRAFT SHOULD EXERCISE CAUTION TONIGHT...



.REST OF TODAY...East winds 5 to 10 knots. Seas subsiding 5 to 7 

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

North swell 4 to 5 feet. Isolated showers.

.TONIGHT...East winds around 10 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Isolated showers.

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

occasional seas up to 6 feet. Dominant period 10 seconds. North

swell around 4 feet. Isolated showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 10 seconds.

Scattered showers.

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

occasional seas up to 5 feet. Dominant period 8 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. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Isolated

thunderstorms. Scattered showers.



$$



AMZ712-260345-

Coastal Waters of Northern Puerto Rico out 10 NM-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM AST THIS AFTERNOON...

...SMALL CRAFT SHOULD EXERCISE CAUTION AFTER 2 PM AST...



.REST OF TODAY...East winds 10 to 15 knots. Seas subsiding 4 to 7 

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

North swell 4 to 5 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

swell around 4 feet. Isolated showers.

.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 10 seconds. North

swell around 4 feet in the evening. Scattered showers.

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

occasional seas up to 5 feet. Dominant period 8 seconds. Scattered

showers.

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

occasional seas up to 5 feet. Dominant period 7 seconds. Scattered

showers and isolated thunderstorms.

.TUESDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 7 seconds. Scattered

showers. Isolated thunderstorms.



$$



AMZ715-260345-

Coastal Waters of Northern USVI and Culebra out 10 NM-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.REST OF TODAY...East winds around 10 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Scattered showers.

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

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

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 10 seconds.

North swell around 4 feet in the evening. Scattered showers.

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

occasional seas up to 5 feet. Dominant period 8 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. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Scattered

showers and isolated thunderstorms.



$$



AMZ722-260345-

Anegada Passage Southward to 17N-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.REST OF TODAY...East winds around 10 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Scattered showers.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

swell around 4 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet

with occasional seas up to 6 feet. Dominant period 10 seconds.

North swell around 4 feet in the evening. Scattered showers.

.SUNDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 8 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. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Scattered

showers and isolated thunderstorms.



$$



AMZ725-260345-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.REST OF TODAY...East winds around 10 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 10 seconds.

Scattered showers.

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

occasional seas up to 5 feet. Dominant period 10 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. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Scattered

showers and isolated thunderstorms.



$$



AMZ732-260345-

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

1037 AM AST Fri Sep 25 2020



.REST OF TODAY...East winds 10 to 15 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. Dominant period 11 seconds. Isolated

showers.

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

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

Scattered showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet

with occasional seas up to 5 feet. Dominant period 10 seconds.

Isolated showers.

.SUNDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 7 seconds. Isolated

showers.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Isolated

thunderstorms. Scattered showers.



$$



AMZ735-260345-

Coastal Waters of Southern Puerto Rico out 10 NM-

1037 AM AST Fri Sep 25 2020



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

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

Southeast swell around 4 feet. Isolated showers.

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

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

Southeast swell around 4 feet in the evening. Isolated showers

through the night.

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

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

showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3

feet. Dominant period 10 seconds. Isolated showers through the

night.

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

Dominant period 8 seconds. Isolated showers.

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

occasional seas up to 5 feet. Dominant period 7 seconds. Isolated

showers, then isolated thunderstorms.

.TUESDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 7 seconds. Scattered

showers. Isolated thunderstorms.



$$



AMZ741-260345-

Mona Passage Southward to 17N-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM AST THIS EVENING...

...SMALL CRAFT SHOULD EXERCISE CAUTION OVERNIGHT...



.REST OF TODAY...East winds 10 to 15 knots. Seas subsiding 5 to 7 

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

North swell 4 to 7 feet. Isolated showers.

.TONIGHT...East 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 6 feet. Isolated showers through the night.

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

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

swell 4 to 5 feet. Isolated showers.

.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet

with occasional seas up to 6 feet. Dominant period 10 seconds.

North swell around 4 feet. Isolated showers.

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

occasional seas up to 5 feet. Dominant period 10 seconds. Isolated

showers.

.MONDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 7 seconds. Scattered

showers. Isolated thunderstorms.

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

occasional seas up to 6 feet. Dominant period 7 seconds. Scattered

showers. Isolated thunderstorms.



$$



AMZ742-260345-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM AST THIS EVENING...

...SMALL CRAFT SHOULD EXERCISE CAUTION OVERNIGHT...





.REST OF TODAY...East winds 5 to 10 knots. Seas subsiding 5 to 7 

feet with occasional seas up to 9 feet. Dominant period 14 seconds. 

North swell 4 to 6 feet. Isolated showers.

.TONIGHT...East 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 5 feet. Isolated showers.

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

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

swell around 4 feet. Isolated showers.

.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 10 seconds. North

swell around 4 feet in the evening. Isolated showers.

.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant

period 10 seconds. Isolated showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers.

.TUESDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated thunderstorms, then isolated

showers.



$$



AMZ745-260345-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

1037 AM AST Fri Sep 25 2020



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM AST THIS EVENING...

...SMALL CRAFT SHOULD EXERCISE CAUTION OVERNIGHT...



.REST OF TODAY...Southeast winds 5 to 10 knots. Seas subsiding 5 to 

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

North swell 4 to 6 feet. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

.TONIGHT...Northeast 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 5 feet. Isolated showers.

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

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

swell around 4 feet. Scattered showers.

.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

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

Isolated showers.

.SUNDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant

period 10 seconds. Isolated thunderstorms, then isolated showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers.

.TUESDAY...East winds 15 to 20 knots. Seas 1 to 3 feet. Dominant

period 7 seconds. Isolated showers.



$$

