Coastal Waters Forecast
Issued by NWS San Juan, PR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZCA52 TJSJ 190101
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
901 PM AST Fri Aug 18 2017

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.

AMZ700-191415-
901 PM AST Fri Aug 18 2017

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Based on the latest advisory from the National Hurricane Center Tropical
Storm Harvey was located near LAT 13.4N...LON 62.9W. Harvey is
forecast to move westward across the Caribbean Sea and pass well
south of the forecast area overnight through Saturday morning.
However, this will result in hazardous seas mainly across the
Caribbean waters and local passages. An area of low pressure east of
the Leeward Islands is also expected to reach the forecast area by
early next week. As a result, winds and seas are forecast to
increase across the offshore Atlantic waters late Sunday through
Monday.

$$

AMZ710-191415-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY Morning...

.REST OF TONIGHT...East winds 15 to 20 knots. Seas 6 to 8 feet
with occasional seas up to 10 feet. Dominant Period 8 seconds.
Northwest swell around 4 feet. Isolated showers through the night.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 8 seconds. North
swell around 4 feet. Isolated showers.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell around 4 feet in the evening. Isolated thunderstorms through
the night. Scattered showers after midnight.
.SUNDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds.
Northeast swell 4 to 7 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds.
Northeast swell 4 to 7 feet. Numerous showers and isolated
thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. East
swell around 4 feet. Isolated showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. East
swell around 4 feet. Scattered showers.

$$

AMZ712-191415-
Coastal Waters of Northern Puerto Rico out 10 NM-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST SATURDAY THROUGH
SATURDAY Evening...

.REST OF TONIGHT...East winds 15 to 20 knots. Seas increasing 5 to 7
feet with occasional seas up to 9 feet. Dominant Period 8 seconds.
North swell around 4 feet after midnight. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell around 4 feet. Isolated showers in the morning, then
isolated thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell around 4 feet in the evening. Scattered showers and isolated
thunderstorms.
.SUNDAY...East 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 in the afternoon. Scattered 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 10 seconds.
Northeast swell 4 to 5 feet. Scattered showers in the evening.
Isolated thunderstorms through the night.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.TUESDAY...East winds 5 to 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.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.

$$

AMZ715-191415-
Coastal Waters of Northern USVI and Culebra out 10 NM-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST SATURDAY THROUGH
SATURDAY Afternoon...

.REST OF TONIGHT...East winds 15 to 20 knots. Seas increasing 5 to 7
feet with occasional seas up to 9 feet. Dominant Period 8 seconds.
North swell around 4 feet after midnight. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell around 4 Feet. Scattered showers in the morning, then
isolated thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Northeast swell 4 to 5 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Northeast
swell around 4 feet in the evening. Numerous showers and isolated
thunderstorms.
.MONDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers. Isolated thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 10 seconds. Isolated thunderstorms. Scattered
showers.

$$

AMZ722-191415-
Anegada Passage Southward to 17N-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY Afternoon...

.REST OF TONIGHT...East winds 15 to 20 knots. Seas increasing 6 to 8
feet with occasional seas up to 10 feet. Dominant Period 7 seconds.
Northeast swell around 4 feet. Scattered showers through the night.
Isolated thunderstorms after midnight.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 8 seconds.
Northeast swell around 4 feet. Scattered showers and isolated
thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds.
Northeast swell 4 to 5 feet. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.MONDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. 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 8 seconds. Scattered
showers. Isolated thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.

$$

AMZ725-191415-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY Afternoon...

.REST OF TONIGHT...Northeast winds 15 to 20 knots. Seas increasing
6 to 8 feet with occasional seas up to 10 feet. Dominant Period 7
seconds. Northeast swell around 4 feet. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 8 seconds.
Northeast swell around 4 feet shifting to the southeast in the
afternoon. Scattered showers through the day. Isolated
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. East
swell 4 to 5 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 8 seconds. Southeast
swell 4 to 5 feet in the evening. Numerous showers and isolated
thunderstorms.
.MONDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers. Isolated thunderstorms.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.

$$

AMZ732-191415-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
901 PM AST Fri Aug 18 2017

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

.REST OF TONIGHT...Northeast winds increasing 20 to 25 knots. Seas 8
to 10 feet with occasional seas up to 11 feet. Dominant Period 7 seconds.
Northeast swell 4 to 5 feet. Scattered showers through the night. Isolated
thunderstorms after midnight.
.SATURDAY...East winds 20 to 25 knots. Seas 8 to 10 feet with occasional
seas up to 11 feet. Dominant Period 8 seconds. Northeast swell 4 to 5 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 8 to 10 feet with occasional
seas up to 11 feet. Dominant Period 7 seconds. East swell around 4 feet
in the evening. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with occasional
seas up to 8 feet. Dominant Period 10 seconds. East swell around 4 feet
in the afternoon. Scattered 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 10 seconds. East
swell around 4 feet. Scattered showers and isolated thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with occasional
seas up to 6 feet. Dominant Period 7 seconds. Isolated thunderstorms.
Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with occasional
seas up to 6 feet. Dominant Period 10 seconds. Scattered showers.
Isolated thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with occasional
seas up to 5 feet. Dominant Period 10 seconds. Isolated thunderstorms.
Scattered showers.

$$

AMZ735-191415-
Coastal Waters of Southern Puerto Rico out 10 NM-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST SATURDAY THROUGH
SATURDAY Evening...

.REST OF TONIGHT...Northeast winds 15 to 20 knots. Seas increasing 5
to 7 feet with occasional seas up to 9 feet. Dominant Period 7
seconds. Southeast swell around 4 feet after midnight. Isolated
showers through the night.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 8 seconds. East
swell around 4 feet. Scattered showers through the day. Isolated
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 7 seconds.
Southeast swell around 4 feet in the evening. Scattered showers in
the evening. Isolated thunderstorms through the night.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Scattered
showers in the morning. Isolated thunderstorms through the day.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
thunderstorms. Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 8 seconds. Scattered showers.

$$

AMZ741-191415-
Mona Passage Southward to 17N-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM AST SATURDAY THROUGH
LATE SATURDAY NIGHT...

.REST OF TONIGHT...Northeast winds 15 to 20 knots. Seas increasing 6
to 8 feet with occasional seas up to 10 feet. Dominant Period 7 seconds.
East swell around 4 feet after midnight. Isolated showers through the
night.
.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with occasional
seas up to 11 feet. Dominant Period 10 seconds. East swell 4 to 6 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 8 to 10 feet
with occasional seas up to 11 feet. Dominant Period 8 seconds.
East swell 4 to 6 feet. Isolated thunderstorms in the evening.
Scattered showers through the night.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Scattered
showers through the day. Isolated thunderstorms in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. Isolated
thunderstorms in the evening, then isolated showers after
midnight.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers, then isolated thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.

$$

AMZ742-191415-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
901 PM AST Fri Aug 18 2017


...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TONIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6
feet with occasional seas up to 8 feet. Dominant Period 7 seconds.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Scattered showers through the day. Isolated thunderstorms in the
afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers through the day. Isolated thunderstorms in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. East
swell around 4 feet. Isolated thunderstorms in the evening.
Scattered showers through the night.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Scattered showers.

$$

AMZ745-191415-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
901 PM AST Fri Aug 18 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION ON SATURDAY...

.REST OF TONIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3
feet. Dominant Period 7 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. Isolated
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated showers in the morning, then
isolated thunderstorms in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated thunderstorms in the evening,
then isolated showers after midnight.
.MONDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated thunderstorms. Scattered
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 feet or less.
Dominant Period 7 seconds. Isolated thunderstorms. Scattered
showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 feet or less.
Dominant Period 7 seconds. Scattered showers.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.