

478 

FZCA52 TJSJ 191952

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

352 PM AST Tue Jan 19 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.



AMZ700-200830-

352 PM AST Tue Jan 19 2021



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

Moderate to locally fresh easterly trade winds will continue across 

the local waters through mid-week. Hazardous seas are expected for 

the offshore Atlantic waters, associated with a northerly swell, with

seas of 6 feet or less elsewhere in the local waters. Isolated to 

scattered brief showers will be possible from time to time through 

the next several days.



$$



AMZ710-200830-

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

352 PM AST Tue Jan 19 2021



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



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

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

swell 4 to 6 feet. Scattered showers.

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

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

showers.

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

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

Isolated showers.

.THURSDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with

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

showers.

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

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

showers.

.FRIDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with

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

swell 4 to 5 feet. Scattered showers.

.SATURDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet with

occasional seas up to 8 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 10 seconds. Isolated

showers.



$$



AMZ712-200830-

Coastal Waters of Northern Puerto Rico out 10 NM-

352 PM AST Tue Jan 19 2021



...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 11 seconds. North

swell 4 to 5 feet. Scattered showers.

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

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

Scattered showers.

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

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

Isolated showers.

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

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

showers.

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

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

showers.

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

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

swell around 4 feet. Scattered showers.

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

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

Scattered showers.

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

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

showers.



$$



AMZ715-200830-

Coastal Waters of Northern USVI and Culebra out 10 NM-

352 PM AST Tue Jan 19 2021



...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 11 seconds. North

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Isolated showers.

.WEDNESDAY NIGHT...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.

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

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

Scattered showers.

.THURSDAY NIGHT...East winds around 10 knots. Seas 2 to 4 feet

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

Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

Scattered showers.



$$



AMZ722-200830-

Anegada Passage Southward to 17N-

352 PM AST Tue Jan 19 2021



...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 11 seconds. North

swell 4 to 5 feet. Scattered showers.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

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

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

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

showers.

.THURSDAY NIGHT...East winds around 10 knots. Seas 3 to 5 feet

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

Isolated showers.

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

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

showers.

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

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

Scattered showers.

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

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

Scattered showers.



$$



AMZ725-200830-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

352 PM AST Tue Jan 19 2021



...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 10 seconds.

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

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

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

showers.

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

with occasional seas up to 6 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. Scattered

showers.

.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

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

Scattered showers.

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

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

Scattered showers.

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

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

Scattered showers.

.SUNDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 10 seconds. Scattered showers.



$$



AMZ732-200830-

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

352 PM AST Tue Jan 19 2021



...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 8 seconds. North

swell 4 to 5 feet in the evening. Scattered showers.

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

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

showers.

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

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

showers.

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

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

Isolated showers.

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

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

showers.

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

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

Scattered showers.

.SUNDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 11 seconds. Scattered showers.



$$



AMZ735-200830-

Coastal Waters of Southern Puerto Rico out 10 NM-

352 PM AST Tue Jan 19 2021



...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 7 seconds. Scattered

showers through the night.

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

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

showers.

.WEDNESDAY 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 through the night.

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

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

showers.

.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet

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

Isolated showers.

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

period 8 seconds. Scattered showers.

.SATURDAY...Northeast 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. Scattered showers.



$$



AMZ741-200830-

Mona Passage Southward to 17N-

352 PM AST Tue Jan 19 2021



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

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

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

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

Northeast swell 4 to 5 feet. Isolated showers.

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

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

Northeast swell around 4 feet in the evening. Isolated showers

through the night.

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

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

showers.

.THURSDAY 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.

.FRIDAY...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.

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

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

swell around 4 feet. Isolated showers.

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

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

showers.



$$



AMZ742-200830-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

352 PM AST Tue Jan 19 2021



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

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

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

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

swell 4 to 5 feet. Isolated showers.

.WEDNESDAY NIGHT...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 in the evening. Isolated showers through

the night.

.THURSDAY...East winds 5 to 10 knots backing northeast in the

afternoon. Seas 2 to 4 feet with occasional seas up to 5 feet.

Dominant period 10 seconds. Isolated showers.

.THURSDAY 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.

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

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

swell around 4 feet. Isolated showers.

.SATURDAY...Northeast 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 10 to 15 knots. Seas 2 to 4 feet with

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

showers.



$$



AMZ745-200830-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

352 PM AST Tue Jan 19 2021



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

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

showers.

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

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

.WEDNESDAY 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.

.THURSDAY...East winds 5 to 10 knots backing north in the

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

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

Dominant period 7 seconds. Isolated showers.

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

period 8 seconds. Isolated showers.

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

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

showers.

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

Dominant period 10 seconds. Scattered showers.



$$

