

184 

FZCA52 TJSJ 110120

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

920 PM AST Sat Oct 10 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.



AMZ700-111345-

920 PM AST Sat Oct 10 2020



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

A ridge of high pressure across the western Atlantic and a weak

surface trough extending across the region will aid in maintaining

light to gentle east to southeast trade winds overnight through Sunday.

Fairly tranquil seas are forecast to persist through the weekend and

into the middle of next week. However isolated thunderstorm development

is forecast for portions of the north and west coastal waters of 

Puerto Rico each afternoon. 



$$



AMZ710-111345-

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

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4

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

Scattered showers and isolated thunderstorms.

.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.

.SUNDAY NIGHT...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 2 to 4 feet with

occasional seas up to 5 feet. Dominant period 10 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 8 seconds. Scattered

showers.

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

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

showers.

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

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

showers.

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

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

swell around 4 feet. Isolated showers.



$$



AMZ712-111345-

Coastal Waters of Northern Puerto Rico out 10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 3

feet. Dominant period 8 seconds. Scattered showers and isolated

thunderstorms.

.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.

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

occasional seas up to 5 feet. Dominant period 10 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 8 seconds. Isolated

showers.

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

Dominant period 8 seconds. Scattered showers.

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

period 7 seconds. Isolated showers.

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

period 7 seconds. Isolated showers.



$$



AMZ715-111345-

Coastal Waters of Northern USVI and Culebra out 10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 8 seconds. Scattered showers and isolated

thunderstorms.

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

period 10 seconds. Scattered showers.

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

Dominant period 10 seconds. Scattered showers.

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

period 10 seconds. Scattered showers.

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

Dominant period 10 seconds. Scattered showers.

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

period 8 seconds. Scattered showers.

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

period 8 seconds. Scattered showers.

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

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

showers.



$$



AMZ722-111345-

Anegada Passage Southward to 17N-

920 PM AST Sat Oct 10 2020



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

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

Isolated thunderstorms early in the evening. Scattered showers

through the night.

.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.

.SUNDAY 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.

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

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

showers.

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

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

showers.

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

period 8 seconds. Isolated showers.

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

period 8 seconds. Isolated showers.

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

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

swell around 4 feet. Scattered showers.



$$



AMZ725-111345-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 8 seconds. Scattered showers and isolated

thunderstorms.

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

period 8 seconds. Isolated thunderstorms in the morning. Scattered

showers through the day.

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

Dominant period 8 seconds. Scattered showers.

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

period 10 seconds. Scattered showers.

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

Dominant period 8 seconds. Scattered showers.

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

period 8 seconds. Scattered showers.

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

period 8 seconds. Scattered showers.

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

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

showers.



$$



AMZ732-111345-

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

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...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 night. Isolated thunderstorms after

midnight.

.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.

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

Dominant period 7 seconds. Scattered showers.

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

period 7 seconds. Scattered showers.

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

Dominant period 10 seconds. Scattered showers.

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

period 8 seconds. Scattered showers.

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

period 8 seconds. Isolated showers.

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

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

showers.



$$



AMZ735-111345-

Coastal Waters of Southern Puerto Rico out 10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 7 seconds. Scattered showers through the night.

Isolated thunderstorms after midnight.

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

period 7 seconds. Isolated showers.

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

Dominant period 7 seconds. Isolated showers.

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

period 7 seconds. Scattered showers.

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

Dominant period 7 seconds. Isolated showers.

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

period 7 seconds. Scattered showers.

.WEDNESDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Isolated showers.

.THURSDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Isolated showers.



$$



AMZ741-111345-

Mona Passage Southward to 17N-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 10 seconds. Isolated showers through the night.

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

period 8 seconds. Isolated thunderstorms in the morning.

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

Dominant period 10 seconds. Scattered showers.

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

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

showers.

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

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

showers.

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

period 7 seconds. Isolated showers.

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

period 7 seconds. Isolated showers.

.THURSDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 8 seconds. Isolated showers.



$$



AMZ742-111345-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 3

feet. Dominant period 10 seconds. Isolated showers.

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

Dominant period 8 seconds. Numerous showers through the day.

Isolated thunderstorms in the afternoon.

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

Dominant period 10 seconds. Isolated thunderstorms in the evening.

Scattered showers through the night.

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

period 10 seconds. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

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

Dominant period 8 seconds. Isolated showers.

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

period 8 seconds. Isolated showers.

.WEDNESDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Isolated thunderstorms, then isolated

showers.

.THURSDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Scattered showers.



$$



AMZ745-111345-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

920 PM AST Sat Oct 10 2020



.REST OF TONIGHT...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 10 seconds. Isolated showers.

.SUNDAY...East winds 5 to 10 knots. Seas 2 feet or less. Dominant

period 8 seconds. Isolated thunderstorms in the afternoon.

.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 10 seconds. Isolated showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 2 feet or less.

Dominant period 10 seconds. Isolated showers.

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

Dominant period 8 seconds. Isolated showers.

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

period 8 seconds. Isolated showers.

.WEDNESDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Isolated showers.

.THURSDAY...East winds 5 to 10 knots. Seas 2 feet or less.

Dominant period 7 seconds. Isolated showers.



$$

