

070 

FZCA52 TJSJ 121957

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

357 PM AST Tue Jan 12 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.



AMZ700-130815-

357 PM AST Tue Jan 12 2021



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

Moderate to fresh easterly winds are expected at least through 

tomorrow, due to a surface high pressure over the western Atlantic. 

A northeasterly swell will continue to impact the local waters, and 

in combination with the winds, is causing choppy and hazardous seas.

However, calmer seas are expected tomorrow and the next few days 

thereafter. 



$$



AMZ710-130815-

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

357 PM AST Tue Jan 12 2021



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



.TONIGHT...East winds 15 to 20 knots. Seas 4 to 7 feet with 

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

swell 4 to 6 feet. Isolated showers.

.WEDNESDAY...East winds 10 to 15 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 NIGHT...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.

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

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

Scattered showers.

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

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ712-130815-

Coastal Waters of Northern Puerto Rico out 10 NM-

357 PM AST Tue Jan 12 2021



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



.TONIGHT...East winds 15 to 20 knots. Seas 4 to 7 feet with 

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

swell 4 to 6 feet. Scattered showers.

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

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

Northeast swell 4 to 5 feet. 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.

Northeast swell 4 to 5 feet. Scattered showers.

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

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

Scattered showers.

.THURSDAY 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.

.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.

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

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

showers.



$$



AMZ715-130815-

Coastal Waters of Northern USVI and Culebra out 10 NM-

357 PM AST Tue Jan 12 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 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.

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

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

Scattered showers.

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

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

Scattered showers.

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

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

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

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

showers.



$$



AMZ722-130815-

Anegada Passage Southward to 17N-

357 PM AST Tue Jan 12 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 4 to 5 feet. Isolated showers.

.WEDNESDAY...East 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. Isolated showers.

.WEDNESDAY 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.

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

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

Scattered showers.

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

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ725-130815-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

357 PM AST Tue Jan 12 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.

Northeast swell 4 to 5 feet. Isolated showers.

.WEDNESDAY...East 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. Scattered 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.

Scattered showers.

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

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

Scattered 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 10 to 15 knots. Seas 3 to 5 feet with

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ732-130815-

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

357 PM AST Tue Jan 12 2021



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



.TONIGHT...East 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 5 feet. Isolated showers.

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

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

Northeast swell 4 to 5 feet. Isolated showers.

.WEDNESDAY NIGHT...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. Scattered showers.

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

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

Scattered showers.

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

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

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. Isolated

showers.

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

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

showers.



$$



AMZ735-130815-

Coastal Waters of Southern Puerto Rico out 10 NM-

357 PM AST Tue Jan 12 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. Isolated

showers through the night.

.WEDNESDAY...East winds 10 to 15 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.

.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 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 10 to 15 knots. Seas 1 to 3 feet. Dominant

period 7 seconds. Isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ741-130815-

Mona Passage Southward to 17N-

357 PM AST Tue Jan 12 2021



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



.TONIGHT...East 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 through the night.

.WEDNESDAY...East 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 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 4 to 5 feet. Isolated showers.

.THURSDAY...East 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. Isolated showers.

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

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

showers.

.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.

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

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

showers.



$$



AMZ742-130815-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

357 PM AST Tue Jan 12 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. Isolated showers.

.WEDNESDAY...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.

.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 4 to 5 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 10 seconds.

.THURSDAY 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.

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

period 10 seconds. Isolated showers.

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

Dominant period 10 seconds. Isolated showers.

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

period 10 seconds. Isolated showers.



$$



AMZ745-130815-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

357 PM AST Tue Jan 12 2021



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

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

showers.

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

occasional seas up to 5 feet. Dominant period 8 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...Southeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

.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 1 to 3 feet. Dominant

period 8 seconds. Isolated showers.

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

Dominant period 7 seconds. Isolated showers.

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

period 7 seconds. Isolated showers.



$$

