Coastal Waters Forecast
Issued by NWS San Juan, PR

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790
FZCA52 TJSJ 210900
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
500 AM AST Sat Sep 21 2019

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.

AMZ700-212115-
500 AM AST Sat Sep 21 2019

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Hazardous seas will continue through the weekend across the Atlantic
waters and local passages due to a long dominant period northerly
swell and a northeast swell from Tropical Storm Jerry. As this
system further to the north of the islands over the Atlantic waters,
showers and thunderstorms associated with the outer bands of the
storm are expected to move across the regional waters through the
weekend.

$$

AMZ710-212115-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
500 AM AST Sat Sep 21 2019

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

.TODAY...South winds 10 to 15 knots. Seas 12 to 14 feet with
occasional seas up to 17 feet. Dominant period 13 seconds. North
swell 7 to 11 feet. Isolated thunderstorms in the morning.
Scattered showers through the day.
.TONIGHT...Southeast winds 10 to 15 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 in the evening, then isolated
thunderstorms after midnight.
.SUNDAY...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. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 11 seconds. North
swell 4 to 6 feet. Isolated thunderstorms.
.MONDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds. Isolated
showers.
.TUESDAY...South winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 8 seconds. Isolated
thunderstorms. Numerous showers.
.WEDNESDAY...South winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. Numerous
showers and scattered thunderstorms.

$$

AMZ712-212115-
Coastal Waters of Northern Puerto Rico out 10 NM-
500 AM AST Sat Sep 21 2019

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

.TODAY...Southeast winds 5 to 10 knots backing east in the
afternoon. Seas 8 to 10 feet with occasional seas up to 13 feet.
Dominant period 13 seconds. North swell 7 to 9 feet. Scattered
showers through the day. Isolated thunderstorms in the afternoon.
.TONIGHT...Southeast 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 9 feet. Isolated showers through the night.
.SUNDAY...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. Numerous showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds. North
swell 4 to 5 feet. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds. Isolated
thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 8 seconds. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...South winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 11 seconds. Scattered showers and isolated thunderstorms.

$$

AMZ715-212115-
Coastal Waters of Northern USVI and Culebra out 10 NM-
500 AM AST Sat Sep 21 2019

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

.TODAY...Southeast 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 thunderstorms in the morning.
Scattered showers through the day.
.TONIGHT...Southeast 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. Scattered showers through the night. Isolated
thunderstorms after midnight.
.SUNDAY...East 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. Isolated thunderstorms in the morning.
Scattered showers through the day.
.SUNDAY NIGHT...East 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. Isolated showers.
.MONDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds.
Scattered showers. Isolated thunderstorms.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 8 seconds. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...South winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant period 11 seconds. Numerous showers and scattered
thunderstorms.

$$

AMZ722-212115-
Anegada Passage Southward to 17N-
500 AM AST Sat Sep 21 2019

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

.TODAY...Southeast winds around 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 thunderstorms in the morning.
Scattered showers through the day.
.TONIGHT...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. Scattered showers through the night. Isolated
thunderstorms after midnight.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds. North
swell 5 to 6 feet. Isolated thunderstorms in the morning.
Scattered showers through the day.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 11 seconds. North
swell 4 to 5 feet. Isolated showers.
.MONDAY...Southeast 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 thunderstorms. Numerous
showers.
.TUESDAY...South winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 8 seconds. North
swell up to 4 feet. Numerous showers and scattered thunderstorms.
.WEDNESDAY...Southeast 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. Numerous showers and scattered
thunderstorms.

$$

AMZ725-212115-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
500 AM AST Sat Sep 21 2019

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

.TODAY...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 6 feet. Isolated thunderstorms in the
morning. Scattered showers through the day.
.TONIGHT...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. Scattered showers through the night.
Isolated thunderstorms after midnight.
.SUNDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 11 seconds.
Northeast swell around 4 feet. Isolated thunderstorms in the
morning. Numerous showers through the day.
.SUNDAY 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 around 4 feet. Isolated showers.
.MONDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds.
Scattered showers. Isolated thunderstorms.
.TUESDAY...South winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 8 seconds. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. Numerous
showers and scattered thunderstorms.

$$

AMZ732-212115-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
500 AM AST Sat Sep 21 2019

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...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 thunderstorms in the
morning. Scattered showers through the day.
.TONIGHT...East winds 10 to 15 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 through the night.
Isolated thunderstorms after midnight.
.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 thunderstorms in the
morning. Scattered showers through the day.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 11 seconds.
Northeast swell 4 to 5 feet. Isolated showers.
.MONDAY...Southeast winds 10 to 15 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 10 seconds. East
swell around 4 feet. Isolated thunderstorms. Scattered showers.
.TUESDAY...South winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 7 seconds. Northeast
swell up to 4 feet. Numerous showers and scattered thunderstorms.
.WEDNESDAY...South 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. Numerous showers and scattered
thunderstorms.

$$

AMZ735-212115-
Coastal Waters of Southern Puerto Rico out 10 NM-
500 AM AST Sat Sep 21 2019

.TODAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. Isolated
showers.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. Isolated
showers in the evening, then isolated thunderstorms after
midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. Isolated
thunderstorms in the morning. Scattered showers through the day.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Isolated
showers.
.MONDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds.
Scattered showers.
.TUESDAY...South winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 7 seconds. Numerous
showers and scattered thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 7 seconds. Numerous
showers and isolated thunderstorms.

$$

AMZ741-212115-
Mona Passage Southward to 17N-
500 AM AST Sat Sep 21 2019

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

.TODAY...Southeast 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. Isolated showers.
.TONIGHT...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. Isolated showers.
.SUNDAY...East 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. Isolated thunderstorms in the morning.
Scattered showers through the day.
.SUNDAY NIGHT...East 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. Isolated thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 11 seconds.
Southeast swell around 4 feet. Scattered showers.
.TUESDAY...South winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds.
Scattered showers and isolated thunderstorms.
.WEDNESDAY...South winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$

AMZ742-212115-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
500 AM AST Sat Sep 21 2019

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

.TODAY...South 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 7 feet. 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 showers through the night.
.SUNDAY...East 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 through the day. Isolated
thunderstorms in the afternoon.
.SUNDAY NIGHT...East winds around 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.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. Isolated
thunderstorms. Numerous showers.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 10 seconds.
Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 feet or less.
Dominant period 12 seconds. Isolated showers.

$$

AMZ745-212115-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
500 AM AST Sat Sep 21 2019

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

.TODAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 13 seconds.
Northwest swell 4 to 7 feet. Scattered showers.
.TONIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 13 seconds.
Northwest swell 4 to 6 feet.
.SUNDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 12 seconds.
Northwest swell around 4 feet. Isolated showers.
.SUNDAY NIGHT...East winds around 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Northwest swell around 4 feet. Isolated showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. Isolated
showers.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant period 8 seconds. Isolated thunderstorms. Scattered
showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 feet or less.
Dominant period 7 seconds. Scattered showers.

$$



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