

470 

FZCA52 TJSJ 312019

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

419 PM AST Sun Jan 31 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.



AMZ700-010900-

419 PM AST Sun Jan 31 2021



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

Hazardous marine conditions continue due to the invading long period

northerly swell across the regional waters. Rough seas will continue

through early in the week. Small craft advisory conditions are 

expected through at least midweek, mainly across the Atlantic waters 

and passages. Moderate to fresh northeast to east trade winds will 

prevail through this evening, then shift to the southeast on Monday.



$$



AMZ710-010900-

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

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 15 feet. Dominant period 13 seconds. North

swell 9 to 11 feet. Numerous showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 10 to 12 feet with

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 8 to 10 feet. Scattered showers through the day.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 8 to 10 feet

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

North swell 7 to 9 feet. Isolated showers through the night.

.TUESDAY...Southeast 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.

.TUESDAY NIGHT...Southeast 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 7 feet. Isolated showers.

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

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

Northwest swell 4 to 7 feet. Isolated showers.

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

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

Northwest swell 4 to 6 feet. Isolated showers.

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

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

Northwest swell around 4 feet. Isolated showers.



$$



AMZ712-010900-

Coastal Waters of Northern Puerto Rico out 10 NM-

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 15 feet. Dominant period 13 seconds. North

swell 9 to 11 feet. Scattered showers through the night.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

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

swell 8 to 10 feet. Isolated showers.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 8 to 10 feet

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

North swell 6 to 9 feet. Isolated showers through the night.

.TUESDAY...Southeast winds 5 to 10 knots. Gusts up to 25 knots in

the morning. Seas 6 to 8 feet with occasional seas up to 10 feet.

Dominant period 12 seconds. North swell 5 to 8 feet. Isolated

showers.

.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 7 feet

with occasional seas up to 9 feet. Dominant period 12 seconds.

North swell 4 to 6 feet. Isolated showers.

.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet with

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

Northwest swell 4 to 6 feet. Isolated showers.

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

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

Northwest swell 4 to 6 feet. Isolated showers.

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

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

swell 4 to 6 feet. Isolated showers.



$$



AMZ715-010900-

Coastal Waters of Northern USVI and Culebra out 10 NM-

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 6 to 11 feet. Scattered showers.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

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

swell 5 to 10 feet. Isolated showers.

.MONDAY NIGHT...Southeast 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 9 feet. Isolated showers.

.TUESDAY...Southeast 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.

.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 5 to 7 feet

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

North swell 4 to 6 feet. Isolated showers.

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

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

Northwest swell 4 to 5 feet. Isolated showers.

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

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

Northwest swell 4 to 5 feet. Isolated showers.

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

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

Northwest swell 4 to 5 feet. Scattered showers.



$$



AMZ722-010900-

Anegada Passage Southward to 17N-

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 13 feet. Dominant period 14 seconds. North

swell 7 to 10 feet. Isolated showers through the night.

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

occasional seas up to 13 feet. Dominant period 14 seconds. North

swell 8 to 9 feet. Isolated showers.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 8 to 10 feet

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

North swell 7 to 9 feet. Isolated showers.

.TUESDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 12 seconds. North

swell 6 to 8 feet. Isolated showers.

.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 6 to 8 feet

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

Northeast swell 5 to 7 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.

Northeast swell 4 to 5 feet. Isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ725-010900-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

419 PM AST Sun Jan 31 2021



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



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

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

Northeast swell 4 to 8 feet. Isolated showers.

.MONDAY...Southeast 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 8 feet. Isolated showers.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 6 to 8 feet

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

Northeast swell 4 to 8 feet. Isolated showers through the night.

.TUESDAY...Southeast 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.

.TUESDAY NIGHT...Southeast 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.

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

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

swell around 4 feet. Isolated showers.

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

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

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.

Scattered showers.



$$



AMZ732-010900-

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

419 PM AST Sun Jan 31 2021



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



.TONIGHT...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 7 feet. Isolated showers.

.MONDAY...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 NIGHT...Southeast 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 through the night.

.TUESDAY...Southeast 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.

.TUESDAY NIGHT...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 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.

Southeast swell 4 to 5 feet. Isolated showers.

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

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

swell around 4 feet. Isolated showers.

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

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

showers.



$$



AMZ735-010900-

Coastal Waters of Southern Puerto Rico out 10 NM-

419 PM AST Sun Jan 31 2021



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



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

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

showers.

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

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

Southeast swell around 4 feet shifting to the north in the

afternoon. Isolated showers through the day.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet

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

Isolated showers.

.TUESDAY...Southeast winds 15 to 20 knots. Seas 4 to 6 feet with

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

showers.

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

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

showers.

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

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

showers.

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

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

showers.



$$



AMZ741-010900-

Mona Passage Southward to 17N-

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 15 feet. Dominant period 13 seconds. North

swell 7 to 11 feet. Isolated showers through the night.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

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

swell 7 to 10 feet. Isolated showers through the day.

.MONDAY NIGHT...Southeast 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 9 feet. Isolated showers through the night.

.TUESDAY...Southeast 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.

.TUESDAY NIGHT...Southeast 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.

.WEDNESDAY...East 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.

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

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

swell 4 to 6 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.



$$



AMZ742-010900-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

419 PM AST Sun Jan 31 2021



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



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

occasional seas up to 14 feet. Dominant period 13 seconds. North

swell 4 to 9 feet. Scattered showers.

.MONDAY...Southeast winds 10 to 15 knots. Seas 8 to 10 feet with

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

swell 4 to 8 feet.

.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 8 to 10 feet

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

North swell 4 to 7 feet.

.TUESDAY...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with

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

swell 4 to 7 feet. Isolated showers.

.TUESDAY NIGHT...East 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 6 feet. Isolated showers.

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

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

Northwest swell 4 to 5 feet. Isolated showers.

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

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

Northwest swell 4 to 5 feet. Isolated showers.

.FRIDAY...East winds 15 to 20 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.



$$



AMZ745-010900-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

419 PM AST Sun Jan 31 2021



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



.TONIGHT...East winds 10 to 15 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 13 seconds. North

swell 4 to 8 feet. Scattered showers through the night.

.MONDAY...Southeast winds 15 to 20 knots. Seas 8 to 10 feet with

occasional seas up to 11 feet. Dominant period 13 seconds. North

swell 4 to 8 feet. Isolated showers through the day.

.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 6 to 8 feet

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

Northwest swell 4 to 7 feet.

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

occasional seas up to 9 feet. Dominant period 12 seconds.

Northwest swell 4 to 6 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

Northwest swell around 4 feet. Isolated showers.

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

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

Northwest swell 4 to 5 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. Isolated showers.



$$

