

451 

FZCA52 TJSJ 300122

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

922 PM 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.



AMZ700-301345-

922 PM AST Tue Dec 29 2020



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

Fresh to strong winds are beginning to produce hazardous marine 

conditions across the region, beginning with the outer northwest

Atlantic waters. Rough seas will spread across the remaining local waters

through tomorrow, and these conditions will continue through the 

rest of the week. Isolated to scattered showers can be expected 

across the local waters for the next few days, especially between

tonight and tomorrow afternoon over the Atlantic. 



$$



AMZ710-301345-

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

922 PM AST Tue Dec 29 2020



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



.REST OF 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 around 5 feet. Isolated showers.

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

with occasional seas up to 14 feet. Dominant period 9 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.

.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.



$$



AMZ712-301345-

Coastal Waters of Northern Puerto Rico out 10 NM-

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST WEDNESDAY THROUGH

SUNDAY MORNING...



.REST OF TONIGHT...North winds 15 to 20 knots. Seas 4 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. Numerous 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.

.THURSDAY NIGHT...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.

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

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

Northeast swell around 4 feet. Isolated showers.



$$



AMZ715-301345-

Coastal Waters of Northern USVI and Culebra out 10 NM-

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM AST WEDNESDAY THROUGH

SUNDAY MORNING...



.REST OF TONIGHT...North winds 15 to 20 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 20 to 25 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 13 feet. Dominant period 8 seconds. North

swell 4 to 5 feet. Scattered showers.

.THURSDAY NIGHT...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 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.

.SUNDAY...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.



$$



AMZ722-301345-

Anegada Passage Southward to 17N-

922 PM AST Tue Dec 29 2020



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

SUNDAY MORNING...



.REST OF TONIGHT...North winds 10 to 15 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 25 knots. Seas 4 to 7 feet with 

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

swell 4 to 6 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 6 feet. Scattered 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. Scattered showers.

.THURSDAY NIGHT...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.

.FRIDAY...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 6 feet. Isolated showers.

.SATURDAY...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.

.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.



$$



AMZ725-301345-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

SUNDAY MORNING...



.REST OF TONIGHT...North winds 15 to 20 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 7 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 13 feet. Dominant period 7 seconds. North

swell 4 to 5 feet. Scattered showers.

.THURSDAY NIGHT...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 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.

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

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

swell around 4 feet. Isolated showers.



$$



AMZ732-301345-

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

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

SUNDAY MORNING...



.REST OF TONIGHT...North winds 15 to 20 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 7 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 7 seconds. North

swell 4 to 5 feet. Scattered showers.

.THURSDAY NIGHT...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 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. North

swell 4 to 5 feet. Scattered showers.

.SATURDAY...East winds 15 to 20 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.

.SUNDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with

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

swell 4 to 6 feet. Isolated showers.



$$



AMZ735-301345-

Coastal Waters of Southern Puerto Rico out 10 NM-

922 PM AST Tue Dec 29 2020



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

SUNDAY MORNING...



.REST OF 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 20 to 25 knots. Seas 4 to 6

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

Scattered showers.

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

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

showers.

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

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

North swell around 4 feet. Isolated showers.

.FRIDAY...Northeast winds 15 to 20 knots. Seas 4 to 7 feet with 

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

swell around 4 feet. Scattered showers.

.SATURDAY...Northeast winds 10 to 15 knots. Seas 4 to 7 feet with 

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

showers.

.SUNDAY...East winds 10 to 15 knots. Seas 4 to 7 feet with 

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

showers.



$$



AMZ741-301345-

Mona Passage Southward to 17N-

922 PM AST Tue Dec 29 2020



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



.REST OF 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 13 feet. Dominant period 8 seconds.

Northeast swell 4 to 5 feet. Scattered showers.

.THURSDAY NIGHT...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...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 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 5 to 7 feet with

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

swell 4 to 5 feet. Isolated showers.



$$



AMZ742-301345-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST WEDNESDAY THROUGH

SUNDAY MORNING...



.REST OF TONIGHT...Northeast 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 20 to 25 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 8 to 10 feet with

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

swell around 4 feet. Isolated showers.

.THURSDAY NIGHT...East 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. 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.

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

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

showers.



$$



AMZ745-301345-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

922 PM AST Tue Dec 29 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.REST OF 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.

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

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

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.

.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.



$$

