

182 

FZCA52 TJSJ 221433

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

1033 AM 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.



AMZ700-230330-

1033 AM AST Tue Sep 22 2020



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

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 increase across the 

region Tuesday and Tuesday night.



$$



AMZ710-230330-

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

1033 AM AST Tue Sep 22 2020



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



.REST OF TODAY...Southwest winds 5 to 10 knots. Seas 6 to 8 feet

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

North swell 4 to 7 feet.  and isolated thunderstorms.

.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 thunderstorms in the evening.

Scattered showers through the night.

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

occasional seas up to 15 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 15 feet. Dominant period 14

seconds. North swell 9 to 11 feet. Scattered showers.

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

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

swell 7 to 10 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 11 seconds. North

swell around 4 feet. Scattered showers.



$$



AMZ712-230330-

Coastal Waters of Northern Puerto Rico out 10 NM-

1033 AM AST Tue Sep 22 2020



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



.REST OF TODAY...East winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 4 to 6 feet.  and scattered thunderstorms.

.TONIGHT...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 thunderstorms through the night.

Isolated showers after midnight.

.WEDNESDAY...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 13 seconds. North swell 7 to 10 feet.

Scattered showers through the day. Isolated thunderstorms in the

afternoon.

.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 9 to 11 feet. Scattered showers.

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

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

swell 7 to 10 feet. Isolated 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.



$$



AMZ715-230330-

Coastal Waters of Northern USVI and Culebra out 10 NM-

1033 AM AST Tue Sep 22 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM AST THIS AFTERNOON 

THROUGH FRIDAY AFTERNOON...



.REST OF TODAY...South winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 4 to 5 feet. Scattered showers late in the morning. Isolated

thunderstorms through the day.

.TONIGHT...Southwest winds 5 to 10 knots backing south after

midnight. Seas 8 to 10 feet with occasional seas up to 11 feet.

Dominant period 12 seconds. North swell 4 to 8 feet. Isolated

thunderstorms in the evening. Scattered 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.

.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 5 to 10 feet. Scattered showers.

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

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

swell 5 to 10 feet. Isolated thunderstorms. Scattered showers.

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

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

swell 4 to 6 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.



$$



AMZ722-230330-

Anegada Passage Southward to 17N-

1033 AM AST Tue Sep 22 2020



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

THROUGH FRIDAY AFTERNOON...



.REST OF TODAY...South 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 through the day.

.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 10 to 12 feet

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

North swell 5 to 10 feet. Scattered showers.

.THURSDAY...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 9 feet. Scattered showers.

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

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

swell 4 to 6 feet. Scattered showers.

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

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

swell around 4 feet. Scattered showers.



$$



AMZ725-230330-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

1033 AM AST Tue Sep 22 2020



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

THROUGH FRIDAY AFTERNOON...



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

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

Northeast swell around 4 feet. Isolated thunderstorms late in the

morning. Scattered showers through the day.

.TONIGHT...South winds 5 to 10 knots. Seas 4 to 7 feet with 

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

swell 4 to 5 feet. Isolated thunderstorms in the evening. Scattered 

showers through the night.

.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 6 to 8 feet with

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

Northeast swell 4 to 7 feet. Isolated showers in the morning, then

isolated thunderstorms in the afternoon.

.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. Scattered showers.

.THURSDAY...East winds 5 to 10 knots. Seas 5 to 7 feet with

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

Northeast swell 4 to 8 feet. Isolated thunderstorms. 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.



$$



AMZ732-230330-

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

1033 AM AST Tue Sep 22 2020



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

Dominant period 10 seconds. Isolated showers through the day.

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

occasional seas up to 6 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. Scattered showers.

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

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

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. East

swell around 4 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. Isolated

showers.



$$



AMZ735-230330-

Coastal Waters of Southern Puerto Rico out 10 NM-

1033 AM AST Tue Sep 22 2020



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

Dominant period 11 seconds. Scattered showers and isolated

thunderstorms.

.TONIGHT...Southeast winds 5 to 10 knots backing east after

midnight. Seas 3 to 5 feet with occasional seas up to 6 feet.

Dominant period 11 seconds. South swell around 4 feet after

midnight. Scattered showers and isolated thunderstorms.

.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. Isolated showers through the night.

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

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

Southeast swell 4 to 5 feet. Isolated showers.

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

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

Southeast swell around 4 feet. Isolated showers.

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

period 11 seconds. Isolated showers.



$$



AMZ741-230330-

Mona Passage Southward to 17N-

1033 AM AST Tue Sep 22 2020



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



.REST OF TODAY...South winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 4 to 5 feet. Isolated thunderstorms.

.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 thunderstorms through the night.

Isolated showers after midnight.

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

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

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

North swell 6 to 11 feet.

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

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

swell 6 to 11 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 8 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 4 to 5 feet. Isolated showers.



$$



AMZ742-230330-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

1033 AM AST Tue Sep 22 2020



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



.REST OF TODAY...South winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 4 to 5 feet. Isolated thunderstorms in the afternoon.

.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. Isolated showers through the night.

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

thunderstorms in the afternoon.

.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. Seas 6 to 8 feet with

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

swell 4 to 8 feet. Isolated thunderstorms, then isolated 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 7 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. North

swell around 4 feet. Isolated showers.



$$



AMZ745-230330-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

1033 AM AST Tue Sep 22 2020



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

EVENING...



.REST OF TODAY...South 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 in the afternoon. Scattered showers through

the day. Isolated thunderstorms in the afternoon.

.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 thunderstorms through the night.

Isolated showers after midnight.

.WEDNESDAY...Southeast winds around 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 4 to 9 feet.

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

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

swell 4 to 9 feet. Isolated thunderstorms, then isolated 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 7 feet. Isolated showers.

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

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

Northwest swell around 4 feet. Isolated showers.



$$

