

240 

FZCA52 TJSJ 040121

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

921 PM AST Sun Jan 3 2021



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.



AMZ700-041430-

921 PM AST Sun Jan 3 2021



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

A northeasterly swell and wind-driven seas will maintain hazardous

marine conditions through at least Monday afternoon. Moderate to

locally fresh winds will continue across the local waters. Seas will

improve tomorrow afternoon and onward. Another northeasterly swell 

will move across the local Atlantic Waters and Caribbean Passages 

around late Tuesday night and early Wednesday morning. 



$$



AMZ710-041430-

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

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...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...Northeast winds 10 to 15 knots. Seas 5 to 7 feet with

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

Northeast swell 4 to 7 Feet. Isolated showers through the day.

.MONDAY NIGHT...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 4 to 6 feet with

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

showers.

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

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

Northeast swell around 4 feet. Scattered showers.

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

occasional seas up to 6 feet. Dominant period 13 seconds. North

swell around 4 feet. Scattered showers.

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

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

swell 4 to 5 feet. Scattered 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 4 to 5 feet. Scattered showers.



$$



AMZ712-041430-

Coastal Waters of Northern Puerto Rico out 10 NM-

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...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...Northeast winds 10 to 15 knots. Seas 5 to 7 feet with

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

Northeast swell 4 to 7 Feet. Isolated showers.

.MONDAY NIGHT...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 5 to 10 knots. Seas 3 to 5 feet with

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

showers.

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

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

showers.

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

occasional seas up to 5 feet. Dominant period 13 seconds. North

swell around 4 feet. Isolated showers.

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

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

swell 4 to 5 feet. Scattered 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 4 to 5 feet. Isolated showers.



$$



AMZ715-041430-

Coastal Waters of Northern USVI and Culebra out 10 NM-

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...Northeast winds 15 to 20 knots. Seas 6 to 8

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

seconds. North swell 4 to 8 feet. Isolated showers through the

night.

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

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

Northeast swell 4 to 7 Feet. Scattered showers.

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

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

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.

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

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

Scattered showers.

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

occasional seas up to 5 feet. Dominant period 13 seconds. North

swell around 4 feet. Scattered showers.

.THURSDAY...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. Scattered showers.

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

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

swell 4 to 5 feet. Scattered showers.



$$



AMZ722-041430-

Anegada Passage Southward to 17N-

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...Northeast 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 8 feet. Isolated showers.

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

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

Northeast swell 4 to 6 Feet. Scattered showers.

.MONDAY 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.

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

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

showers.

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

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

Northeast swell around 4 feet. Scattered showers.

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

occasional seas up to 5 feet. Dominant period 13 seconds. North

swell around 4 feet. Scattered showers.

.THURSDAY...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. 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 4 to 5 feet. Scattered showers.



$$



AMZ725-041430-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

921 PM AST Sun Jan 3 2021



...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...



.REST OF TONIGHT...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 7 feet. Isolated showers through the

night.

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

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

swell 4 to 5 feet. Scattered showers.

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

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

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.

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

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

Scattered showers.

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

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

Scattered showers.

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

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

Northeast swell around 4 feet. Scattered showers.

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

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

Northeast swell around 4 feet. Scattered showers.



$$



AMZ732-041430-

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

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...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 8 feet. Isolated showers.

.MONDAY...Northeast winds 10 to 15 knots. Seas 6 to 8 feet with

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

swell 4 to 7 feet. Isolated showers.

.MONDAY NIGHT...Northeast winds 15 to 20 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 4 to 6 feet with

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

Scattered showers.

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

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

Scattered showers.

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

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

swell around 4 feet. Scattered showers.

.THURSDAY...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. Scattered showers.

.FRIDAY...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. Scattered showers.



$$



AMZ735-041430-

Coastal Waters of Southern Puerto Rico out 10 NM-

921 PM AST Sun Jan 3 2021



.REST OF TONIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5

feet with occasional seas up to 6 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.

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

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

Isolated showers through the night.

.TUESDAY...Northeast winds 5 to 10 knots veering east in the

afternoon. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated

showers.

.TUESDAY NIGHT...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 10 seconds. Isolated showers.

.THURSDAY...East winds 10 to 15 knots. Seas 2 feet or less.

Dominant period 11 seconds. Isolated showers.

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

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

showers.



$$



AMZ741-041430-

Mona Passage Southward to 17N-

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...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 8 feet. Isolated showers through the night.

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

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

swell 4 to 7 feet. Isolated showers through the day.

.MONDAY NIGHT...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 5 feet. Isolated showers through the night.

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

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

showers.

.TUESDAY 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.

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

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

Northeast swell around 4 feet. Isolated showers.

.THURSDAY...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. Isolated 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. Isolated showers.



$$



AMZ742-041430-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

921 PM AST Sun Jan 3 2021



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



.REST OF TONIGHT...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.

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

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

Northeast swell 4 to 7 feet. Isolated showers.

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

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

Northeast swell 4 to 5 feet in the evening. Isolated showers

through the night.

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

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

showers.

.TUESDAY 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.

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

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

showers.

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

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

swell around 4 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.



$$



AMZ745-041430-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

921 PM AST Sun Jan 3 2021



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

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

Isolated showers.

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

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

.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 10 seconds.

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

Dominant period 7 seconds. Isolated showers.

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

Dominant period 8 seconds. Isolated showers.

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

Dominant period 12 seconds. Isolated showers.

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

period 12 seconds. Isolated showers.

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

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

showers.



$$

