

391 

FZCA52 TJSJ 230111

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

911 PM AST Tue Sep 22 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.



AMZ700-231330-

911 PM AST Tue Sep 22 2020



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

A northerly swell is affecting the local waters, and will continue 

through Friday night, causing hazardous seas. Light to gentle 

southerly winds will prevail across the regional waters through the 

next few days. Showers and thunderstorms will move across the region 

through tonight.



$$



AMZ710-231330-

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

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...South winds 5 to 10 knots. Seas 10 to 12 feet

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

North swell 7 to 11 feet. Scattered showers.

.WEDNESDAY...South winds 5 to 10 knots. Seas 10 to 12 feet with

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

swell 9 to 11 feet. Isolated showers.

.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12

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

seconds. North swell 9 to 11 feet. Isolated thunderstorms in the

evening. Scattered showers through the night.

.THURSDAY...East winds 5 to 10 knots. Seas 10 to 12 feet with

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

swell 8 to 10 feet. Isolated showers.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 7 to 9 feet. Scattered showers.

.FRIDAY...East 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.

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

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

swell around 4 feet. Scattered 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.



$$



AMZ712-231330-

Coastal Waters of Northern Puerto Rico out 10 NM-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...South winds 5 to 10 knots. Seas 10 to 12 feet

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

North swell 5 to 10 feet. Isolated showers through the night.

.WEDNESDAY...South winds 5 to 10 knots backing north in the

afternoon. Seas 10 to 12 feet with occasional seas up to 14 feet.

Dominant period 13 seconds. North swell 7 to 10 feet. Scattered

showers through the day. Isolated thunderstorms in the afternoon.

.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots veering southeast

after midnight. Seas 10 to 12 feet with occasional seas up to 14

feet. Dominant period 14 seconds. North swell 9 to 11 feet.

Isolated showers through the night.

.THURSDAY...Southeast winds 5 to 10 knots backing northeast in the

afternoon. Seas 10 to 12 feet with occasional seas up to 14 feet.

Dominant period 14 seconds. North swell 8 to 10 feet. Isolated

showers.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 7 to 9 feet. Scattered showers.

.FRIDAY...East winds 10 to 15 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.

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

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

swell around 4 feet. Scattered showers.

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

period 8 seconds. Isolated showers.



$$



AMZ715-231330-

Coastal Waters of Northern USVI and Culebra out 10 NM-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...South winds 5 to 10 knots. Seas 8 to 10 feet

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

North swell 4 to 8 feet. Scattered showers.

.WEDNESDAY...South winds 5 to 10 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.

.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 6 to 10 feet. Isolated showers through the

night.

.THURSDAY...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with

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

swell 5 to 10 feet. Isolated showers in the morning, then isolated

thunderstorms in the afternoon.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 4 to 9 feet. Scattered showers.

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

occasional seas up to 8 feet. Dominant period 13 seconds. North

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

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

showers.



$$



AMZ722-231330-

Anegada Passage Southward to 17N-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...Southeast winds 5 to 10 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 through the night.

.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with

occasional seas up to 13 feet. Dominant period 12 seconds. North

swell 4 to 9 feet. Isolated showers.

.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet

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

North swell 5 to 10 feet. Isolated showers.

.THURSDAY...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 5 to 9 feet. Isolated showers.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet with

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

swell 4 to 8 feet. Scattered showers.

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

occasional seas up to 8 feet. Dominant period 13 seconds. North

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

period 10 seconds. Isolated showers.



$$



AMZ725-231330-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...South winds 5 to 10 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...South winds 5 to 10 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 7 feet. Isolated showers.

.WEDNESDAY NIGHT...Southeast winds 5 to 10 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 through the

night.

.THURSDAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with

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

Northeast swell 4 to 8 feet. Scattered showers through the day.

Isolated thunderstorms in the afternoon.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet with

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

swell 4 to 7 feet. Scattered showers.

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

occasional seas up to 6 feet. Dominant period 12 seconds. East

swell 4 to 5 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.

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

period 10 seconds. Isolated showers.



$$



AMZ732-231330-

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

911 PM AST Tue Sep 22 2020



.REST OF TONIGHT...Southeast 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 after midnight. Isolated showers

through the night.

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

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

swell 4 to 5 feet. Isolated showers through the day.

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

occasional seas up to 8 feet. Dominant period 12 seconds.

Northeast swell 4 to 5 feet.

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

occasional seas up to 8 feet. Dominant period 12 seconds.

Northeast swell 4 to 5 feet. Isolated showers.

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

occasional seas up to 8 feet. Dominant period 12 seconds.

Northeast swell 4 to 5 feet. Scattered showers.

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

occasional seas up to 5 feet. Dominant period 12 seconds. Isolated

showers.

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

period 11 seconds. Isolated showers.

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

period 10 seconds. Isolated showers.



$$



AMZ735-231330-

Coastal Waters of Southern Puerto Rico out 10 NM-

911 PM AST Tue Sep 22 2020



.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet

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

South swell around 4 feet after midnight. Isolated showers through

the night.

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

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

swell 4 to 5 feet.

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

occasional seas up to 8 feet. Dominant period 12 seconds. South

swell 4 to 5 feet. Isolated showers.

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

occasional seas up to 8 feet. Dominant period 12 seconds.

Southeast swell 4 to 5 feet. Isolated showers.

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

occasional seas up to 5 feet. Dominant period 12 seconds.

Southeast swell around 4 feet. Isolated showers.

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

Dominant period 11 seconds. Isolated showers.

.SUNDAY...East winds 5 to 10 knots. Seas 2 feet or less. Dominant

period 10 seconds. Isolated showers.



$$



AMZ741-231330-

Mona Passage Southward to 17N-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 8 to 10

feet with occasional seas up to 13 feet. Dominant period 12

seconds. North swell 4 to 9 feet. Isolated showers through the

night.

.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 10 to 12 feet

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

North swell 5 to 10 feet. Isolated showers through the day.

.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12

feet with occasional seas up to 14 feet. Dominant period 13

seconds. North swell 6 to 11 feet.

.THURSDAY...East winds 5 to 10 knots. Seas 10 to 12 feet with

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

swell 6 to 11 feet.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 5 to 9 feet. Isolated showers.

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

occasional seas up to 9 feet. Dominant period 13 seconds. North

swell 4 to 7 feet. Isolated showers.

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

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

swell around 4 feet. 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.



$$



AMZ742-231330-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

911 PM AST Tue Sep 22 2020



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



.REST OF TONIGHT...Southeast winds 5 to 10 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 through the

night.

.WEDNESDAY...South winds 5 to 10 knots. Seas 10 to 12 feet with

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

swell 4 to 9 feet. Isolated showers.

.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 10 to 12 feet

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

North swell 4 to 9 feet.

.THURSDAY...East winds 5 to 10 knots backing north in the

afternoon. Seas 10 to 12 feet with occasional seas up to 14 feet.

Dominant period 14 seconds. North swell 4 to 8 feet. Isolated

thunderstorms in the afternoon.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 4 to 8 feet. Isolated showers.

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

occasional seas up to 8 feet. Dominant period 13 seconds. North

swell 4 to 7 feet. Isolated showers.

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

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

swell around 4 feet. Isolated showers.

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

period 10 seconds. Isolated showers.



$$



AMZ745-231330-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

911 PM AST Tue Sep 22 2020



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

FRIDAY EVENING...



.REST OF TONIGHT...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 7 feet. Isolated showers through the night.

.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 4 to 9 feet. Isolated showers through the day.

.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet

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

North swell 5 to 10 feet.

.THURSDAY...Northeast winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 5 to 10 feet.

.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with

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

swell 4 to 9 feet. Isolated showers.

.FRIDAY...East winds 5 to 10 knots. Seas 4 to 7 feet with

occasional seas up to 8 feet. Dominant period 13 seconds. North

swell 4 to 6 feet. Isolated showers.

.SATURDAY...East 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.

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

period 10 seconds. Isolated showers.



$$

