

517 

FZCA52 TJSJ 312002

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

402 PM AST Thu Dec 31 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.



AMZ700-010915-

402 PM AST Thu Dec 31 2020



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

Hazardous marine conditions caused by fresh to strong winds across 

the local waters are expected for the rest of the week into the 

weekend. Isolated to scattered showers can be expected across the 

local waters.



$$



AMZ710-010915-

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

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 10 to 12 feet with

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

swell around 5 feet. Isolated showers.

.FRIDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with

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

Northeast swell 5 to 6 feet. Isolated showers.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet

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

North swell around 5 feet. Isolated showers.

.SATURDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with

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

Northeast swell 4 to 5 feet. Isolated showers.

.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 8 to 10 feet

with occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 9 feet. Isolated showers.

.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 9 feet. Isolated showers.

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

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

showers.

.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.



$$



AMZ712-010915-

Coastal Waters of Northern Puerto Rico out 10 NM-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 10 to 12 feet with

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

Northeast swell 4 to 5 feet. Scattered showers.

.FRIDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with

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

Northeast swell 4 to 5 feet. Scattered showers.

.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Scattered showers.

.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 8 to 10 feet

with occasional seas up to 11 feet. Dominant period 9 seconds.

Northeast swell around 4 feet. Scattered showers through the

night.

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

occasional seas up to 10 feet. Dominant period 11 seconds.

Northeast swell 4 to 8 feet. Isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ715-010915-

Coastal Waters of Northern USVI and Culebra out 10 NM-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

swell 4 to 5 feet. Isolated showers.

.FRIDAY...Northeast winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds. North

swell 4 to 5 feet. Scattered showers.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet

with occasional seas up to 13 feet. Dominant period 10 seconds.

North swell 4 to 5 feet. Isolated showers.

.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds. North

swell 4 to 5 feet. Isolated showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 12

seconds. North swell 4 to 7 feet. Isolated showers.

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

occasional seas up to 10 feet. Dominant period 12 seconds. North

swell 4 to 8 feet. Isolated showers.

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

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

Scattered showers.

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

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

showers.



$$



AMZ722-010915-

Anegada Passage Southward to 17N-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 11 seconds.

Northeast swell 5 to 10 feet. Isolated showers.

.FRIDAY...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 11 seconds.

Northeast swell 5 to 10 feet. Isolated showers.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet

with occasional seas up to 14 feet. Dominant period 11 seconds.

Northeast swell 5 to 10 feet. Isolated showers.

.SATURDAY...Northeast winds 20 to 25 knots. Seas 10 to 12 feet

with occasional seas up to 14 feet. Dominant period 11 seconds.

Northeast swell 5 to 10 feet. Isolated showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 13 feet. Dominant period 12

seconds. Northeast swell 4 to 9 feet. Isolated showers.

.SUNDAY...Northeast winds 15 to 20 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 9 feet. Isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ725-010915-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

swell 4 to 5 feet. Isolated showers.

.FRIDAY...Northeast winds 20 to 25 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 5 feet. Scattered showers.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet

with occasional seas up to 11 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

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

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

Northeast swell around 4 feet. Scattered showers.

.SUNDAY...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 11 seconds.

Northeast swell 4 to 6 feet. Isolated showers.

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

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

swell around 4 feet. Isolated showers.

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

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

showers.



$$



AMZ732-010915-

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

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

swell 4 to 5 feet. Isolated showers.

.FRIDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

swell 4 to 5 feet. Isolated showers.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet

with occasional seas up to 13 feet. Dominant period 10 seconds.

North swell 4 to 5 feet. Isolated showers.

.SATURDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds. North

swell 4 to 5 feet. Isolated showers.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 13 feet. Dominant period 11

seconds. Northeast swell 4 to 9 feet. Scattered showers.

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

occasional seas up to 10 feet. Dominant period 11 seconds.

Northeast swell 4 to 9 feet. Isolated showers.

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

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

swell 4 to 6 feet. Isolated showers.

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

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

Scattered showers.



$$



AMZ735-010915-

Coastal Waters of Southern Puerto Rico out 10 NM-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...Northeast winds 20 to 25 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 7 seconds. East

swell around 4 feet. Isolated showers through the night.

.FRIDAY...East winds 20 to 25 knots. Seas 6 to 8 feet with

occasional seas up to 10 feet. Dominant period 7 seconds. East

swell around 4 feet. Isolated showers through the day.

.FRIDAY NIGHT...Northeast winds 20 to 25 knots. Seas 6 to 8 feet

with occasional seas up to 10 feet. Dominant period 7 seconds.

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

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

occasional seas up to 10 feet. Dominant period 7 seconds.

Southeast swell around 4 feet. Isolated showers.

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

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

Isolated showers through the night.

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

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

showers.

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

occasional seas up to 5 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.



$$



AMZ741-010915-

Mona Passage Southward to 17N-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

swell 4 to 5 feet. Isolated showers through the night.

.FRIDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers through the day.

.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers through the night.

.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet.

.SATURDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 10

seconds. Northeast swell around 4 feet.

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

occasional seas up to 10 feet. Dominant period 11 seconds.

Northeast swell 4 to 7 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

Scattered showers.



$$



AMZ742-010915-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

402 PM AST Thu Dec 31 2020



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



.TONIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 5 feet. Isolated showers through the night.

.FRIDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 5 feet. Isolated showers.

.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

.SATURDAY...Northeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 10 seconds. North

swell 4 to 5 feet. Isolated showers.

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

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

Northeast swell around 4 feet.

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

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

Northeast swell 4 to 7 feet. Isolated showers.

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

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

Northeast swell 4 to 5 feet. Isolated showers.

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

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

Scattered showers.



$$



AMZ745-010915-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

402 PM AST Thu Dec 31 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.

.FRIDAY...Northeast 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.

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

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

showers through the night.

.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.

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

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

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

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

showers.

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

Dominant period 11 seconds. Isolated showers.

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

period 10 seconds. Isolated showers.



$$

