

444 

FZCA52 TJSJ 190829

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

429 AM AST Thu Nov 19 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.



AMZ700-192130-

429 AM AST Thu Nov 19 2020



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

Light to moderate easterly winds will continue across the regional 

waters through Today becoming moderate to locally fresh by Friday. 

A tropical will continue to cross the regional waters bringing 

periods of showers and possibly isolated thunderstorms to portions 

of the local waters today. Seas will become choppy and hazardous 

later tonight through Friday, as a long period swell will arrive and

spread across the local Atlantic waters. 



$$



AMZ710-192130-

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

429 AM AST Thu Nov 19 2020



...SMALL CRAFT OPERATORS SHOULD EXERCISE CAUTION...

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

EVENING...

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

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

showers.

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

occasional seas up to 9 feet. Dominant period 10 seconds. North

swell around 4 feet after midnight. Isolated thunderstorms through

the night. Scattered showers after midnight.

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

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

swell around 4 feet. Isolated thunderstorms in the morning.

Scattered showers through the day.

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

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

swell around 4 feet. Scattered showers and isolated thunderstorms.

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

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

swell around 4 feet. Scattered showers. Isolated thunderstorms.

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

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

swell around 4 feet. Isolated showers.

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

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

showers.



$$



AMZ712-192130-

Coastal Waters of Northern Puerto Rico out 10 NM-

429 AM AST Thu Nov 19 2020



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

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

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

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

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

Northeast swell around 4 feet. Scattered showers and isolated

thunderstorms.

.FRIDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Scattered showers and isolated thunderstorms.

.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 5 to 7 feet

with occasional seas up to 9 feet. Dominant period 10 seconds.

North swell 4 to 5 feet in the evening. Scattered showers through

the night. Isolated thunderstorms after midnight.

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

occasional seas up to 9 feet. Dominant period 10 seconds.

Scattered showers and isolated thunderstorms.

.SUNDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet with

occasional seas up to 6 feet. Dominant period 9 seconds. Scattered

showers.

.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet with

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

showers.



$$



AMZ715-192130-

Coastal Waters of Northern USVI and Culebra out 10 NM-

429 AM AST Thu Nov 19 2020



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

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

Scattered showers.

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

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

swell around 4 feet. Scattered showers through the night. Isolated

thunderstorms after midnight.

.FRIDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with

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

swell around 4 feet. Scattered showers and isolated thunderstorms.

.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

thunderstorms in the evening. Scattered showers through the night.

.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

Scattered showers and isolated thunderstorms.

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

occasional seas up to 8 feet. Dominant period 9 seconds. Scattered

showers.

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

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

showers.



$$



AMZ722-192130-

Anegada Passage Southward to 17N-

429 AM AST Thu Nov 19 2020



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

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

showers.

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

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

Northeast swell around 4 feet. Isolated thunderstorms in the

evening, then scattered showers after midnight.

.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

swell around 4 Feet. Isolated thunderstorms in the morning.

Scattered showers through the day.

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

occasional seas up to 9 feet. Dominant period 8 seconds. Scattered

showers through the night. Isolated thunderstorms after midnight.

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

occasional seas up to 9 feet. Dominant period 8 seconds. North

swell around 4 feet. Scattered showers and isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ725-192130-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

429 AM AST Thu Nov 19 2020



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

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

thunderstorms through the night. Scattered showers after midnight.

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

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

thunderstorms in the morning. Numerous showers through the day.

.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

Scattered showers and isolated thunderstorms.

.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

Scattered showers and isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ732-192130-

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

429 AM AST Thu Nov 19 2020



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

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

showers.

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

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

swell around 4 feet. Scattered showers.

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

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

thunderstorms in the morning, then isolated showers in the

afternoon.

.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with

occasional seas up to 8 feet. Dominant period 7 seconds. Scattered

showers and isolated thunderstorms.

.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with

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

showers and isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ735-192130-

Coastal Waters of Southern Puerto Rico out 10 NM-

429 AM AST Thu Nov 19 2020



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

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

showers.

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

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

showers in the evening, then isolated thunderstorms after

midnight.

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

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

showers.

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

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

Scattered showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ741-192130-

Mona Passage Southward to 17N-

429 AM AST Thu Nov 19 2020



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

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

showers.

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

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

Northeast swell around 4 feet after midnight. Isolated showers.

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

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

swell around 4 Feet. Isolated showers.

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

occasional seas up to 9 feet. Dominant period 10 seconds.

Scattered showers and isolated thunderstorms.

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

occasional seas up to 9 feet. Dominant period 10 seconds.

Scattered showers. Isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ742-192130-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

429 AM AST Thu Nov 19 2020



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

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

showers through the day. Isolated thunderstorms in the afternoon.

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

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

swell around 4 feet after midnight. Scattered showers.

.FRIDAY...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. Numerous showers through the day. Isolated

thunderstorms in the afternoon.

.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 10 seconds.

Scattered showers through the night. Isolated thunderstorms after

midnight.

.SATURDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with

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

thunderstorms, then isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ745-192130-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

429 AM AST Thu Nov 19 2020



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

period 8 seconds. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

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

period 7 seconds. Isolated showers.

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

period 8 seconds. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

.FRIDAY NIGHT...East 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 after midnight. Scattered showers.

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

occasional seas up to 6 feet. Dominant period 10 seconds. 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 5 to 10 knots. Seas 1 to 3 feet. Dominant

period 8 seconds. Isolated showers.



$$

