

983 

FZCA52 TJSJ 170802

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

402 AM AST Thu Sep 17 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.



AMZ700-172045-

402 AM AST Thu Sep 17 2020



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

Moderate northeast winds will persist across the regional waters 

today. The remnants of Rene will move from the Atlantic waters and 

across the local area today, increasing shower and thunderstorm 

activity. Winds will decrease and become more southerly during the 

weekend as Hurricane Teddy moves northwestward across the Atlantic 

and stays far away to our north. However, northeasterly swells 

generated from Teddy are forecast to move across the Atlantic and 

eastern waters of the islands later today, deteriorating the marine 

conditions and becoming hazardous through Monday.



$$



AMZ710-172045-

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

402 AM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH 2 PM AST...

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

THROUGH MONDAY MORNING...



.TODAY...Northeast 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 8 feet.  and isolated thunderstorms.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 6 to 8 feet with

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

swell 4 to 8 feet. Isolated thunderstorms in the evening.

Scattered showers through the night.

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

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

swell 4 to 9 feet. Scattered showers.

.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 8 to 10 feet

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

East swell 5 to 9 feet. Scattered showers.

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

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

Northeast swell 5 to 9 feet. Isolated showers.

.SUNDAY...South winds 5 to 10 knots. Seas 6 to 8 feet with

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

Northeast swell 5 to 8 feet. Isolated showers.

.MONDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 5 to 6 feet. Scattered showers.



$$



AMZ712-172045-

Coastal Waters of Northern Puerto Rico out 10 NM-

402 AM AST Thu Sep 17 2020



.TODAY...Northeast winds around 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 through the day.

Isolated thunderstorms in the afternoon.

.TONIGHT...East 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. Numerous showers and isolated

thunderstorms.

.FRIDAY...Northeast 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.

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

after midnight. Seas 4 to 6 feet with occasional seas up to 8

feet. Dominant period 12 seconds. Northeast swell 4 to 5 feet.

Scattered showers.

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

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

Northeast swell 4 to 8 feet. Isolated showers.

.SUNDAY...South winds 5 to 10 knots. Seas 6 to 8 feet with

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

Northeast swell 5 to 8 feet. Scattered showers.

.MONDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 5 to 6 feet. Isolated thunderstorms. Scattered showers.



$$



AMZ715-172045-

Coastal Waters of Northern USVI and Culebra out 10 NM-

402 AM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE

SUNDAY NIGHT...



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

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

swell 4 to 5 feet. Scattered showers and isolated thunderstorms.

.TONIGHT...East winds 10 to 15 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 in the evening.

Scattered showers through the night.

.FRIDAY...Northeast 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 8 feet. Isolated showers.

.FRIDAY NIGHT...Northeast winds 5 to 10 knots veering east after

midnight. Seas 6 to 8 feet with occasional seas up to 10 feet.

Dominant period 13 seconds. North swell 4 to 8 feet. Isolated

showers.

.SATURDAY...South winds 5 to 10 knots. Seas 5 to 7 feet with

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

Northeast swell 4 to 8 feet. Scattered showers.

.SUNDAY...South winds 5 to 10 knots. Seas 5 to 7 feet with

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

swell 4 to 7 feet. Scattered showers.

.MONDAY...South 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. Isolated thunderstorms. Scattered showers.



$$



AMZ722-172045-

Anegada Passage Southward to 17N-

402 AM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY

AFTERNOON...



.TODAY...Northeast 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 5 feet shifting to the east 4 to 7 feet in the

afternoon. Scattered showers and isolated thunderstorms through

the day.

.TONIGHT...East winds 10 to 15 knots. Seas 6 to 8 feet with

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

swell 4 to 8 feet. Isolated thunderstorms in the evening.

Scattered showers through the night.

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

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

Northeast swell 4 to 8 feet. Isolated showers.

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

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

feet. Dominant period 13 seconds. Northeast swell 4 to 9 feet.

Isolated showers.

.SATURDAY...South winds 5 to 10 knots. Seas 6 to 8 feet with

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

Northeast swell 4 to 9 feet. Isolated showers.

.SUNDAY...South 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. Scattered showers.

.MONDAY...Southeast 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. Isolated thunderstorms. Scattered showers.



$$



AMZ725-172045-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

402 AM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY

AFTERNOON...



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

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

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

Scattered showers in the afternoon.

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

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

swell 4 to 7 feet. Isolated thunderstorms in the evening.

Scattered showers through the night.

.FRIDAY...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. Isolated showers.

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

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

swell 4 to 7 feet. Isolated showers.

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

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

Northeast swell 4 to 7 feet. Scattered showers.

.SUNDAY...South winds 5 to 10 knots. Seas 3 to 7 feet with

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

Northeast swell 4 to 5 feet. Scattered showers.

.MONDAY...South winds 5 to 10 knots. Seas 3 to 5 feet with

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

swell 4 to 5 feet. Isolated thunderstorms. Scattered showers.



$$



AMZ732-172045-

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

402 AM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY

AFTERNOON...



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

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

swell around 4 feet in the afternoon. Isolated showers.

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

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

swell 4 to 5 feet. Scattered showers and isolated thunderstorms.

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

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

swell 4 to 5 feet. Isolated showers.

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

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

swell 4 to 6 feet. Isolated showers through the night.

.SATURDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet with

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

Northeast swell 4 to 7 feet. Isolated showers.

.SUNDAY...Southeast winds 5 to 10 knots. Seas 4 to 7 feet with

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

swell 4 to 7 feet. Scattered showers.

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

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

Southeast swell around 4 feet. Isolated thunderstorms. Scattered

showers.



$$



AMZ735-172045-

Coastal Waters of Southern Puerto Rico out 10 NM-

402 AM AST Thu Sep 17 2020



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

period 8 seconds. Scattered showers through the day. Isolated

thunderstorms in the afternoon.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

thunderstorms in the evening. Scattered showers through the night.

.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.

.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 12 seconds. Scattered showers.

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

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

swell around 4 feet. Isolated showers.

.SUNDAY...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 11 seconds. Scattered showers.

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

Dominant period 11 seconds. Isolated showers.



$$



AMZ741-172045-

Mona Passage Southward to 17N-

402 AM AST Thu Sep 17 2020



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

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

.TONIGHT...Northeast 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 after midnight. Isolated

thunderstorms in the evening.

.FRIDAY...Northeast 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. Isolated thunderstorms in the

morning. Scattered showers through the day.

.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 5 feet

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

Northeast swell 4 to 5 feet. Isolated showers.

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

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

Northeast swell 4 to 6 feet. Isolated showers.

.SUNDAY...Southeast 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 7 feet. Isolated showers.

.MONDAY...Southeast 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 7 feet. Isolated showers.



$$



AMZ742-172045-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

402 AM AST Thu Sep 17 2020



.TODAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

showers through the day.

.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

thunderstorms in the evening, then isolated showers after

midnight.

.FRIDAY...Northeast 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.

.FRIDAY NIGHT...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.

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

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

Northeast swell 4 to 5 feet. Isolated showers.

.SUNDAY...Southeast 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 7 feet. Isolated thunderstorms. Scattered

showers.

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

occasional seas up to 6 feet. Dominant period 13 seconds. North

swell 4 to 7 feet. Isolated thunderstorms. Scattered showers.



$$



AMZ745-172045-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

402 AM AST Thu Sep 17 2020



.TODAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

.TONIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with

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

.FRIDAY...Northeast winds 5 to 10 knots veering southwest in the

afternoon. Seas 1 to 3 feet. Dominant period 10 seconds.

.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.

Dominant period 11 seconds. Isolated showers.

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

Dominant period 11 seconds. Isolated showers.

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

Dominant period 12 seconds. Isolated showers.

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

Dominant period 13 seconds. Isolated showers.



$$

