

099 

FZCA52 TJSJ 172022

CWFSJU



Coastal Waters Forecast

National Weather Service San Juan PR

422 PM 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.



AMZ700-180930-

422 PM 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

through the end of the workweek, decreasing and becoming southerly 

as Hurricane Teddy moves northwestward across the Atlantic and well 

northeast of the local islands during the weekend. However, 

northeasterly swells generated from Teddy are forecast to spread 

across the regional waters starting this evening, resulting in 

hazardous marine conditions through at least late Sunday night.



$$



AMZ710-180930-

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

422 PM AST Thu Sep 17 2020



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



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

occasional seas up to 11 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 13 feet. Dominant period 12 seconds. East

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

thunderstorms in the afternoon.

.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 8 to 10 feet

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

East swell 5 to 10 feet. Scattered showers.

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

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

Northeast swell 5 to 10 feet. Isolated showers.

.SATURDAY NIGHT...North winds 5 to 10 knots veering south after

midnight. Seas 8 to 10 feet with occasional seas up to 13 feet.

Dominant period 13 seconds. Northeast swell 7 to 9 feet. Isolated

showers.

.SUNDAY...South 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 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 12 seconds. North

swell 5 to 6 feet. Scattered showers.

.TUESDAY...South 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 7 feet. Scattered showers.



$$



AMZ712-180930-

Coastal Waters of Northern Puerto Rico out 10 NM-

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

SUNDAY NIGHT...



.TONIGHT...Northeast 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. 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...East 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 6 feet. Scattered showers.

.SATURDAY...South winds 5 to 10 knots veering north in the

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

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

showers.

.SATURDAY NIGHT...Northeast winds 5 to 10 knots veering south

after midnight. Seas 8 to 10 feet with occasional seas up to 13

feet. Dominant period 13 seconds. Northeast swell 5 to 9 feet.

Isolated showers.

.SUNDAY...South 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 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.

.TUESDAY...South 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 7 feet. Isolated thunderstorms. Scattered showers.



$$



AMZ715-180930-

Coastal Waters of Northern USVI and Culebra out 10 NM-

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH LATE SUNDAY NIGHT...



.TONIGHT...Northeast 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...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 8 feet. Isolated showers.

.SATURDAY...Southwest 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. Scattered showers.

.SATURDAY NIGHT...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 8 feet. Isolated 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 11 seconds. North

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

.TUESDAY...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.



$$



AMZ722-180930-

Anegada Passage Southward to 17N-

422 PM AST Thu Sep 17 2020



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



.TONIGHT...Northeast 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 9 feet. Isolated showers.

.FRIDAY NIGHT...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 9 feet. Isolated showers.

.SATURDAY...Southwest 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 9 feet. Isolated showers.

.SATURDAY NIGHT...South 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 9 feet. Isolated showers.

.SUNDAY...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 6 feet. Scattered showers.

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

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

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

.TUESDAY...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. Scattered showers.



$$



AMZ725-180930-

Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out

10 NM-

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

THROUGH LATE SATURDAY NIGHT...



.TONIGHT...Northeast 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...Northeast 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...Southwest 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 7 feet. Scattered showers.

.SATURDAY NIGHT...South 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.

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

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

Northeast swell up 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 around 4 feet. Isolated thunderstorms. Scattered showers.

.TUESDAY...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. Scattered

showers.



$$



AMZ732-180930-

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

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION... 

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

LATE SATURDAY NIGHT...



.TONIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 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 6 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 13 seconds. East

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

.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 7 feet. Isolated showers.

.SATURDAY NIGHT...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 7 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. East

swell 4 to 6 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.

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

Dominant period 11 seconds. Scattered showers.



$$



AMZ735-180930-

Coastal Waters of Southern Puerto Rico out 10 NM-

422 PM AST Thu Sep 17 2020



.TONIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.

Dominant period 8 seconds. Isolated thunderstorms in the evening.

Scattered showers through the night.

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

period 12 seconds. Isolated showers in the morning.

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

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

Scattered showers.

.SATURDAY...Northeast winds 5 to 10 knots veering south in the

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

Dominant period 12 seconds. East swell around 4 feet. Isolated

showers.

.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet

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

East swell around 4 feet. Isolated showers.

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

Dominant period 11 seconds. Scattered showers.

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

Dominant period 11 seconds. Isolated showers.

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

Dominant period 11 seconds. Isolated thunderstorms. Scattered

showers.



$$



AMZ741-180930-

Mona Passage Southward to 17N-

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



.TONIGHT...Northeast 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 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...East winds 10 to 15 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.

.SATURDAY...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 5 feet. Isolated showers.

.SATURDAY NIGHT...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 7 feet. Isolated showers.

.SUNDAY...Southeast 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 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 6 feet. Isolated showers.

.TUESDAY...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 7 feet. Scattered showers.



$$



AMZ742-180930-

Coastal Waters of Northwestern Puerto Rico out 10 NM-

422 PM AST Thu Sep 17 2020



.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 10 to 15 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 10 to 15 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 backing northwest in the

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

Dominant period 11 seconds. Northeast swell around 4 feet.

Isolated showers.

.SATURDAY 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.

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 12 seconds. North

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

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

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

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



$$



AMZ745-180930-

Coastal Waters of Southwestern Puerto Rico out 10 NM-

422 PM AST Thu Sep 17 2020



...SMALL CRAFT SHOULD EXERCISE CAUTION...



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

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

.FRIDAY...North winds 5 to 10 knots. Seas 1 to 3 feet. Dominant

period 10 seconds.

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

Dominant period 11 seconds. Isolated showers.

.SATURDAY...East winds 5 to 10 knots veering southwest in the

afternoon. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated

showers.

.SATURDAY NIGHT...North winds 5 to 10 knots veering east after

midnight. 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.

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

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

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



$$

