

770 

FZCA52 TJSJ 202002

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

402 PM AST Fri Nov 20 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.



AMZ700-210845-

402 PM AST Fri Nov 20 2020



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

Moderate to locally fresh easterly winds will continue across the 

regional waters through the upcoming weekend. Moisture trailing a 

tropical wave will aid in the development of passing showers and 

possibly isolated thunderstorms over portions of the coastal waters 

for tonight. Seas will continue to be choppy and hazardous through 

the upcoming weekend, due to the arrival of a long dominant period 

swell which will spread across the Atlantic waters and local 

passages.



$$



AMZ710-210845-

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

402 PM AST Fri Nov 20 2020



...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT...



.TONIGHT...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.

.SATURDAY...Southeast 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.

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

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

swell around 4 feet. Scattered showers and isolated thunderstorms.

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

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

Northeast swell around 4 feet. Scattered showers.

.SUNDAY NIGHT...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 after midnight. Scattered showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ712-210845-

Coastal Waters of Northern Puerto Rico out 10 NM-

402 PM AST Fri Nov 20 2020



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



.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. Isolated showers.

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

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

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

Isolated thunderstorms in the afternoon.

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

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

Scattered showers.

.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.

.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet

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

Isolated showers.

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

occasional seas up to 6 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 8 seconds. Isolated

showers.

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

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

showers.



$$



AMZ715-210845-

Coastal Waters of Northern USVI and Culebra out 10 NM-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH SUNDAY MORNING...



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

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

swell around 4 feet after midnight. Scattered showers.

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

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

swell around 4 Feet. Scattered showers.

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

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

Scattered showers and isolated thunderstorms.

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

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

showers.

.SUNDAY NIGHT...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 4 to 6 feet with

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

showers. Isolated thunderstorms.

.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.

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

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

Scattered showers.



$$



AMZ722-210845-

Anegada Passage Southward to 17N-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...



.TONIGHT...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.

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

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

swell around 4 feet. Scattered showers.

.SATURDAY NIGHT...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. Isolated thunderstorms in the evening.

Scattered showers through the night.

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

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

swell around 4 Feet. Scattered showers.

.SUNDAY NIGHT...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 4 to 6 feet with

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

showers. Isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ725-210845-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH SUNDAY MORNING...



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

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

Scattered showers.

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

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

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

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

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

Northeast swell around 4 feet in the evening. 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 8 seconds. Scattered

showers.

.SUNDAY NIGHT...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 4 to 6 feet with

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

showers. Isolated thunderstorms.

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

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

showers.

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

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

showers.



$$



AMZ732-210845-

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

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

showers.

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

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

showers.

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

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

thunderstorms in the evening. Scattered showers through the night.

.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.

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

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

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, then isolated thunderstorms.

.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.

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

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

showers.



$$



AMZ735-210845-

Coastal Waters of Southern Puerto Rico out 10 NM-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

showers.

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

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

showers through the day.

.SATURDAY 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.

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

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

showers.

.SUNDAY 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.

.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.

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

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

showers.

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

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

showers.



$$



AMZ741-210845-

Mona Passage Southward to 17N-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH SATURDAY AFTERNOON...



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

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

Scattered showers through the night.

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

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

showers through the day.

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

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

showers.

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

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

showers.

.SUNDAY NIGHT...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. Isolated

showers.

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

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

showers.

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

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

showers.



$$



AMZ742-210845-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

402 PM AST Fri Nov 20 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

Scattered showers.

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

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

thunderstorms in the afternoon.

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

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

showers.

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

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

showers through the day. Isolated thunderstorms in the afternoon.

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

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

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

thunderstorms. Scattered showers.

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

period 8 seconds. Isolated thunderstorms. Scattered showers.

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

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

showers.



$$



AMZ745-210845-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

402 PM AST Fri Nov 20 2020



.TONIGHT...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. Isolated showers through the

night.

.SATURDAY...Southeast 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.

.SATURDAY NIGHT...Southeast 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 9 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 8 seconds. Isolated

showers.

.MONDAY...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. Isolated showers.

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

Dominant period 7 seconds. Scattered showers.



$$

