

823 

FZCA52 TJSJ 291407

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

1007 AM AST Tue Dec 29 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.



AMZ700-300315-

1007 AM AST Tue Dec 29 2020



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

Choppy seas continue this morning for the Atlantic waters. 

Increasing winds, becoming fresh to moderate, will cause building 

seas later today. Hazardous marine conditions are anticipated 

starting tonight and spreading across the waters through tomorrow. 

These conditions will continue through the week. Isolated to 

scattered showers can be expected across the local waters for the 

next few days as a weak surface trough moves over the region.



$$



AMZ710-300315-

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

1007 AM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH SATURDAY EVENING...



.REST OF TODAY...North winds 10 to 15 knots. Seas 4 to 6 feet with

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

showers.

.TONIGHT...North winds 15 to 20 knots. Seas 6 to 8 feet with

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

Northeast swell 4 to 5 feet. Scattered showers.

.WEDNESDAY...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.

.WEDNESDAY NIGHT...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.

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

occasional seas up to 14 feet. Dominant period 8 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 14 feet. Dominant period 10 seconds.

Northeast swell 5 to 6 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.



$$



AMZ712-300315-

Coastal Waters of Northern Puerto Rico out 10 NM-

1007 AM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH

SATURDAY EVENING...



.REST OF TODAY...North winds 10 to 15 knots. Seas 4 to 6 feet with

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

showers.

.TONIGHT...North 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. Scattered showers.

.WEDNESDAY...Northeast winds 20 to 25 knots. Seas 8 to 10 feet

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

Northeast swell 4 to 5 feet. Scattered showers.

.WEDNESDAY NIGHT...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 5 feet. Numerous showers.

.THURSDAY...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.

.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.



$$



AMZ715-300315-

Coastal Waters of Northern USVI and Culebra out 10 NM-

1007 AM AST Tue Dec 29 2020



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

SATURDAY EVENING...



.REST OF TODAY...North winds 5 to 10 knots. Seas 3 to 5 feet with

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

showers.

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

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

swell around 4 feet after midnight. Scattered showers.

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

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

swell 4 to 5 feet. Scattered showers.

.WEDNESDAY NIGHT...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. Numerous showers.

.THURSDAY...East 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. Scattered showers.

.FRIDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with

occasional seas up to 11 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 10 seconds. North

swell 4 to 5 feet. Isolated showers.



$$



AMZ722-300315-

Anegada Passage Southward to 17N-

1007 AM AST Tue Dec 29 2020



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

SATURDAY EVENING...



.REST OF TODAY...North winds 5 to 10 knots. Seas 3 to 5 feet with

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

Northeast swell around 4 feet. Isolated showers.

.TONIGHT...North winds 5 to 10 knots. Seas 3 to 5 feet with

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

Northeast swell around 4 feet. Scattered showers.

.WEDNESDAY...Northeast 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 6 feet. Isolated showers.

.WEDNESDAY NIGHT...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. Scattered showers.

.THURSDAY...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. 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.

Northeast swell 5 to 6 feet. Isolated showers.

.SATURDAY...East winds 15 to 20 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.



$$



AMZ725-300315-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

1007 AM AST Tue Dec 29 2020



.REST OF TODAY...North winds 10 to 15 knots. Seas 2 to 4 feet with

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

showers.

.TONIGHT...North winds 10 to 15 knots. Seas 3 to 5 feet with

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

Scattered showers.

.WEDNESDAY...Northeast winds 15 to 20 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...Northeast winds 20 to 25 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 7

seconds. Northeast swell 4 to 5 feet. Numerous showers.

.THURSDAY...East 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. Scattered showers.

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



$$



AMZ732-300315-

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

1007 AM AST Tue Dec 29 2020



.REST OF TODAY...North winds 5 to 10 knots. Seas 2 to 4 feet with

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

Northeast swell around 4 feet. Isolated showers through the day.

.TONIGHT...North 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.

.WEDNESDAY...Northeast 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 NIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10

feet with occasional seas up to 11 feet. Dominant period 7

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

.THURSDAY...East 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. Scattered showers.

.FRIDAY...East 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.

.SATURDAY...East 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.



$$



AMZ735-300315-

Coastal Waters of Southern Puerto Rico out 10 NM-

1007 AM AST Tue Dec 29 2020



.REST OF TODAY...Northwest winds 5 to 10 knots.Seas 1 to 3 feet. 

Dominant period 8 seconds. Isolated showers through the day.

.TONIGHT...North 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.

.WEDNESDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with

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

showers.

.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6

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

Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

showers.



$$



AMZ741-300315-

Mona Passage Southward to 17N-

1007 AM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH SATURDAY EVENING...



.REST OF TODAY...North winds 15 to 20 knots. Seas 4 to 6 feet with

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

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

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

swell around 4 feet after midnight. Isolated showers.

.WEDNESDAY...Northeast winds 20 to 25 knots. Seas 8 to 10 feet

with occasional seas up to 11 feet. Dominant period 7 seconds.

East swell around 4 feet. Isolated showers.

.WEDNESDAY NIGHT...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 5 feet. Scattered showers.

.THURSDAY...East 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. Scattered showers.

.FRIDAY...East 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. Scattered showers.

.SATURDAY...East 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.



$$



AMZ742-300315-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

1007 AM AST Tue Dec 29 2020



...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH

SATURDAY EVENING...



.REST OF TODAY...North winds 10 to 15 knots. Seas 3 to 5 feet with

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

showers.

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

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

showers.

.WEDNESDAY...Northeast winds 20 to 25 knots. Seas 6 to 8 feet with

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

swell around 4 feet. Scattered showers.

.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 8 to 10

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

seconds. North swell around 4 feet. Isolated showers.

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

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

swell 4 to 5 feet. Isolated showers.

.FRIDAY...East winds 20 to 25 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.

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

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

Northeast swell around 4 feet. Isolated showers.



$$



AMZ745-300315-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

1007 AM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.REST OF TODAY...North winds 15 to 20 knots. Seas 2 to 4 feet with

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

.TONIGHT...North 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...Northeast 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...Northeast winds 15 to 20 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 8 seconds. Scattered

showers.

.FRIDAY...Northeast 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.



$$

