

440 

FZCA52 TJSJ 310941 CCA

CWFSJU



Coastal Waters Forecast...CORRECTED

National Weather Service San Juan PR

541 AM 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.



AMZ700-312115-

541 AM 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 for the next couple days.



$$



AMZ710-312115-

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

541 AM AST Thu Dec 31 2020



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



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

occasional seas up to 14 feet. Dominant period 8 seconds. North

swell 4 to 6 feet. Isolated showers.

.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 5 to 6 feet. Isolated showers.

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

occasional seas up to 15 feet. Dominant period 10 seconds.

Northeast swell 6 to 11 feet. Scattered showers.

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

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

Northeast swell around 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.

Northeast swell 4 to 5 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...Northeast winds 10 to 15 knots. Seas 4 to 6 feet with

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

showers.



$$



AMZ712-312115-

Coastal Waters of Northern Puerto Rico out 10 NM-

541 AM AST Thu Dec 31 2020



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



.TODAY...East 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.

.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 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 4 to 5 feet. Scattered showers.

.FRIDAY 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 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.

.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 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 10 seconds. Isolated

showers.



$$



AMZ715-312115-

Coastal Waters of Northern USVI and Culebra out 10 NM-

541 AM AST Thu Dec 31 2020



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



.TODAY...Northeast 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. Scattered showers.

.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. Scattered 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 6 to 8 feet with

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

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 10 seconds.

Scattered showers.



$$



AMZ722-312115-

Anegada Passage Southward to 17N-

541 AM AST Thu Dec 31 2020



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



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

occasional seas up to 14 feet. Dominant period 8 seconds. North

swell 4 to 7 feet. Scattered showers.

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

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

showers.



$$



AMZ725-312115-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

541 AM AST Thu Dec 31 2020



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



.TODAY...Northeast 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. Scattered showers.

.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. Scattered showers.

.FRIDAY...Northeast 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.

.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 6 to 8 feet with

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

Northeast swell around 4 feet. Isolated showers.

.SUNDAY...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.

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

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

showers.



$$



AMZ732-312115-

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

541 AM AST Thu Dec 31 2020



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



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

occasional seas up to 14 feet. Dominant period 8 seconds. North

swell 4 to 5 feet. Scattered showers.

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

occasional seas up to 14 feet. Dominant period 8 seconds. North

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. 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 11 feet. Dominant period 10 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

.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 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. Isolated

showers.



$$



AMZ735-312115-

Coastal Waters of Southern Puerto Rico out 10 NM-

541 AM AST Thu Dec 31 2020



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



.TODAY...East winds 20 to 25 knots. Seas 5 to 7 feet with

occasional seas up to 9 feet. Dominant period 7 seconds. North

swell around 4 feet in the afternoon. Isolated showers.

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

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

Northeast swell around 4 feet. Isolated showers.

.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.

.FRIDAY NIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet

with occasional seas up to 9 feet. Dominant period 7 seconds.

Southeast swell around 4 feet. Isolated showers.

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

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

showers.

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

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

showers.



$$



AMZ741-312115-

Mona Passage Southward to 17N-

541 AM AST Thu Dec 31 2020



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



.TODAY...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 6 feet. Isolated showers.

.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 10 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...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.

.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 10 seconds. East

swell 4 to 5 feet. Isolated showers.



$$



AMZ742-312115-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

541 AM AST Thu Dec 31 2020



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



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

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

swell 4 to 5 feet. Isolated showers.

.TONIGHT...East 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. Isolated showers.

.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.

.FRIDAY NIGHT...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...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. Isolated showers.

.SUNDAY...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 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.

Northeast swell 4 to 5 feet. Isolated showers.



$$



AMZ745-312115-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

541 AM AST Thu Dec 31 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.TODAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with

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

showers.

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

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

.FRIDAY NIGHT...Northeast winds 15 to 20 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 5 to 10 knots. Seas 2 to 4 feet with

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

showers.

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

Dominant period 10 seconds. Isolated showers.



$$

