

681 

FZCA52 TJSJ 221538

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

1138 AM AST Sat Aug 22 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.



AMZ700-230430-

1138 AM AST Sat Aug 22 2020



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

Tropical Storm conditions are expected continue, spreading westward,

as Tropical Storm Laura progresses through the local Caribbean 

waters, moving westward. Hazardous seas and life- threatening 

conditions are expected today and tonight, but then subside rapidly 

on Sunday. The improving marine conditions are expected to continue 

into the workweek, though winds will remain moderate to fresh, and, 

as such, seas will be choppy.



$$



AMZ710-230430-

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

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. East winds 30 to 35

knots with gusts to around 55 knots. Seas 13 to 15 feet with

occasional seas up to 19 feet. Dominant period 10 seconds. North

swell 5 to 10 feet. Showers and isolated thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots. Gusts up to 50 knots subsiding to 40 knots after

midnight. Seas 13 to 15 feet with occasional seas up to 19 feet.

Dominant period 10 seconds. Northeast swell 4 to 9 feet. Showers

and isolated thunderstorms.

.SUNDAY...East winds 20 to 25 knots with gusts to around 35 knots.

Seas 8 to 10 feet with occasional seas up to 13 feet. Dominant

period 10 seconds. Southeast swell around 4 feet in the afternoon.

Isolated showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

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

Dominant period 8 seconds. East swell around 4 feet in the

evening. Scattered showers.

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

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

showers.

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

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

showers and isolated thunderstorms.

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

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

showers.

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

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

showers.

.WEDNESDAY...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. Isolated showers.



$$



AMZ712-230430-

Coastal Waters of Northern Puerto Rico out 10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. Southeast winds 30 to

35 knots with gusts to around 55 knots. Seas 10 to 12 feet with

occasional seas up to 15 feet. Dominant period 10 seconds.

Northeast swell 4 to 6 feet. Showers and isolated thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots with gusts to around 50 knots easing to 20 to 25 knots

with gusts to around 35 knots after midnight. Seas 10 to 12 feet

with occasional seas up to 15 feet. Dominant period 10 seconds.

Northeast swell 4 to 6 feet. Showers and isolated thunderstorms.

.SUNDAY...East winds 15 to 20 knots with gusts to around 35 knots.

Seas 8 to 10 feet with occasional seas up to 11 feet. Dominant

period 10 seconds. Isolated showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 35 knots in

the evening. Seas 5 to 7 feet with occasional seas up to 9 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 7 seconds. Scattered

showers.

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

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

showers.

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

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

Isolated showers.

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

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

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



$$



AMZ715-230430-

Coastal Waters of Northern USVI and Culebra out 10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. Southeast winds 30 to

35 knots with gusts to around 50 knots. Seas 10 to 12 feet with

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

Northeast swell 4 to 6 feet. Showers and isolated thunderstorms.

.TONIGHT...Southeast winds 15 to 20 knots with gusts to around 30

knots. Seas 8 to 10 feet with occasional seas up to 11 feet.

Dominant period 10 seconds. Northeast swell 4 to 5 feet. Showers

and isolated thunderstorms.

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

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

showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 3 to 5 feet with occasional seas up to 6 feet.

Dominant period 7 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.

.MONDAY NIGHT...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.

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

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

showers.

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

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

showers.



$$



AMZ722-230430-

Anegada Passage Southward to 17N-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions possible. Southeast

winds 15 to 20 knots with gusts to around 30 knots. Seas 10 to 12

feet with occasional seas up to 15 feet. Dominant period 10

seconds. Northeast swell 4 to 6 feet. Showers and isolated

thunderstorms.

.TONIGHT...Southeast winds 15 to 20 knots with gusts to around 30

knots. Seas 8 to 10 feet with occasional seas up to 11 feet.

Dominant period 8 seconds. East swell 4 to 5 feet in the evening.

Showers and isolated thunderstorms.

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

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

showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 4 to 6 feet with occasional seas up to 8 feet.

Dominant period 7 seconds. Scattered showers.

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

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.

.WEDNESDAY...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. Isolated showers.



$$



AMZ725-230430-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. Southeast winds 30 to

35 knots with gusts to around 50 knots. Seas 12 to 14 feet with

occasional seas up to 17 feet. Dominant period 10 seconds.

Northeast swell 4 to 6 feet. Showers and isolated thunderstorms.

.TONIGHT...Southeast winds 15 to 20 knots with gusts to around 30

knots. Seas 8 to 10 feet with occasional seas up to 13 feet.

Dominant period 8 seconds. East swell 4 to 5 feet. Showers and

isolated thunderstorms.

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

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

showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 3 to 5 feet with occasional seas up to 6 feet.

Dominant period 7 seconds. Scattered showers.

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

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

showers.

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

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

showers and isolated thunderstorms.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ732-230430-

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

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. South winds 30 to 35

knots with gusts to around 50 knots. Seas 10 to 12 feet with

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

swell up to 5 feet. Showers and scattered thunderstorms.

.TONIGHT... Tropical storm conditions possible. Southeast winds 20

to 25 knots. Gusts up to 30 knots increasing to 40 knots after

midnight. Seas 8 to 10 feet with occasional seas up to 11 feet.

Dominant period 8 seconds. East swell up to 5 feet. Showers and

scattered thunderstorms.

.SUNDAY...East winds 20 to 25 knots with gusts to around 35 knots.

Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant

period 8 seconds. Northeast swell up to 4 feet shifting to the

south in the afternoon. Isolated showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 5 to 7 feet with occasional seas up to 9 feet.

Dominant period 7 seconds. South swell up to 4 feet in the

evening. Isolated showers.

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

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

showers.

.MONDAY NIGHT...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.

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

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

showers.

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

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

showers.



$$



AMZ735-230430-

Coastal Waters of Southern Puerto Rico out 10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions. Southeast winds 30 to

35 knots with gusts to around 55 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 7 seconds. East

swell 4 to 5 feet in the afternoon. Showers and scattered

thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots. Gusts up to 50 knots subsiding to 40 knots after

midnight. Seas 8 to 10 feet with occasional seas up to 11 feet.

Dominant period 8 seconds. Northeast swell 4 to 5 feet. Showers

and scattered thunderstorms.

.SUNDAY...East winds 20 to 25 knots with gusts to around 35 knots.

Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant

period 8 seconds. East swell around 4 Feet. Scattered showers.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 4 to 6 feet with occasional seas up to 8 feet.

Dominant period 7 seconds. Isolated showers through the night.

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

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

showers through the day. Isolated thunderstorms in the afternoon.

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

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

showers.

.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers.

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

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

showers.



$$



AMZ741-230430-

Mona Passage Southward to 17N-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions expected. North winds

10 to 15 knots becoming southwest 30 to 35 knots with gusts to

around 55 knots in the afternoon. Seas 6 to 8 feet with occasional

seas up to 10 feet. Dominant period 7 seconds. Northeast swell up

to 4 feet in the afternoon. Showers and scattered thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots. Gusts up to 55 knots subsiding to 45 knots after

midnight. Seas 6 to 8 feet with occasional seas up to 10 feet.

Dominant period 10 seconds. Northeast swell up to 4 feet. Showers

and scattered thunderstorms.

.SUNDAY...Southeast winds 20 to 25 knots with gusts to around 40

knots. Seas 6 to 8 feet with occasional seas up to 10 feet.

Dominant period 10 seconds. Northeast swell up to 4 feet shifting

to the east in the afternoon. Isolated thunderstorms in the

morning. Scattered showers through the day.

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

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

swell up to 4 feet. Isolated showers through the night.

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

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ742-230430-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions expected. North winds

10 to 15 knots becoming southeast 30 to 35 knots with gusts to

around 55 knots in the afternoon. Seas 6 to 8 feet with occasional

seas up to 10 feet. Dominant period 7 seconds. Northeast swell

around 4 feet in the afternoon. Showers and scattered

thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots with gusts to around 50 knots. Seas 6 to 8 feet with

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

Northeast swell around 4 feet. Showers and scattered

thunderstorms.

.SUNDAY...Southeast winds 15 to 20 knots with gusts to around 30

knots. Seas 5 to 7 feet with occasional seas up to 9 feet.

Dominant period 10 seconds. Southeast swell around 4 feet in the

morning becoming light. Scattered showers through the day.

Isolated thunderstorms in the afternoon.

.SUNDAY NIGHT...East winds 15 to 20 knots. Gusts up to 30 knots in

the evening. Seas 3 to 5 feet with occasional seas up to 6 feet.

Dominant period 10 seconds. Isolated showers through the night.

.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.

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

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

showers.

.TUESDAY...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Scattered showers through the day.

Isolated thunderstorms in the afternoon.

.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers.

.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 12 seconds. Scattered showers through the day.

Isolated thunderstorms in the afternoon.



$$



AMZ745-230430-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

1138 AM AST Sat Aug 22 2020



...TROPICAL STORM WARNING IN EFFECT...



.REST OF TODAY... Tropical storm conditions expected. Northwest

winds around 10 knots becoming southeast 30 to 35 knots with gusts

to around 55 knots in the afternoon. Seas 3 to 5 feet with

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

and scattered thunderstorms.

.TONIGHT... Tropical storm conditions expected. Southeast winds 30

to 35 knots with gusts to around 50 knots. Seas 3 to 5 feet with

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

and scattered thunderstorms.

.SUNDAY...Southeast winds 15 to 20 knots with gusts to around 35

knots. Seas 3 to 5 feet with occasional seas up to 6 feet.

Dominant period 7 seconds. Isolated showers.

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

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

showers.

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

period 7 seconds. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

.MONDAY NIGHT...East 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. Scattered showers through the day.

Isolated thunderstorms in the afternoon.

.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Isolated showers.

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

period 7 seconds. Isolated showers.



$$

