Coastal Waters Forecast
Issued by NWS San Juan, PR

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355
FZCA52 TJSJ 180825
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
425 AM AST Sat Nov 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.

AMZ700-182045-
425 AM AST Sat Nov 18 2017

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A frontal boundary and associated moisture will continue to linger
across the local Atlantic waters through the weekend to result in
southerly winds and showers with thunderstorms at times. A northerly
swell is forecast to reach the Atlantic Waters through Saturday.
Easterly winds and a more stable air mass is expected across the
local waters the next week.

$$

AMZ710-182045-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
425 AM AST Sat Nov 18 2017

.TODAY...West 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. Scattered showers and isolated thunderstorms.
.TONIGHT...Southeast 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. Isolated thunderstorms in the evening.
Scattered showers through the night.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Scattered showers through the day. Isolated thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast 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 after midnight. Isolated thunderstorms
in the evening, then isolated showers after midnight.
.MONDAY...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. Isolated thunderstorms. 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. Isolated
showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.

$$

AMZ712-182045-
Coastal Waters of Northern Puerto Rico out 10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...Southwest winds 5 to 10 knots veering north in the
afternoon. Seas 2 to 4 feet with occasional seas up to 5 feet.
Dominant Period 10 seconds. North swell around 4 feet. Scattered
showers and isolated thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Scattered showers and isolated thunderstorms.
.SUNDAY...South winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY NIGHT...Southeast 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 after midnight. Isolated showers.
.MONDAY...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. Isolated thunderstorms. Scattered
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 10 seconds. Isolated showers.

$$

AMZ715-182045-
Coastal Waters of Northern USVI and Culebra out 10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...South 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 in the afternoon. Scattered showers and
isolated thunderstorms.
.TONIGHT...East 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. Isolated thunderstorms in the evening.
Scattered showers through the night.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...Southeast 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 after midnight. 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 10 seconds. North
swell around 4 feet. Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Scattered showers.

$$

AMZ722-182045-
Anegada Passage Southward to 17N-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Isolated thunderstorms through the day.
Scattered showers in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Scattered showers.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers through the day. Isolated thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast 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 after midnight. 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 11 seconds. North
swell around 4 feet. Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Northeast swell around 4 feet. Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Scattered showers.

$$

AMZ725-182045-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers and isolated thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
thunderstorms in the evening. Scattered showers through the night.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers through the day. Isolated thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers and isolated thunderstorms.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 8 seconds. Scattered showers.

$$

AMZ732-182045-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers and isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
thunderstorms in the evening. Scattered showers through the night.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 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.
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 11 seconds. East
swell around 4 feet. Isolated showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. East
swell around 4 feet. Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ735-182045-
Coastal Waters of Southern Puerto Rico out 10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots veering southwest in the
afternoon. Seas 1 to 3 feet. Dominant Period 7 seconds. Scattered
showers and isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Scattered showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Scattered showers.
.MONDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Isolated showers.
.TUESDAY...East 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 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated showers.

$$

AMZ741-182045-
Mona Passage Southward to 17N-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots veering north in the afternoon.
Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant
Period 10 seconds. West swell around 4 feet shifting to the
northwest in the afternoon. Numerous showers and isolated
thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Numerous 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 8 seconds. Scattered
showers and isolated thunderstorms.
.SUNDAY NIGHT...Southeast 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.
.MONDAY...East 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. Isolated thunderstorms, then isolated
showers.
.TUESDAY...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. Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.

$$

AMZ742-182045-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...North winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Northwest swell around 4 feet. Numerous showers and isolated
thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Numerous showers and isolated thunderstorms.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Scattered
showers.
.SUNDAY NIGHT...Southeast 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 after midnight. Isolated showers.
.MONDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. North
swell around 4 feet. Isolated thunderstorms. Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Isolated showers.

$$

AMZ745-182045-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
425 AM AST Sat Nov 18 2017

.TODAY...South winds 5 to 10 knots veering north in the afternoon.
Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant
Period 10 seconds. Numerous showers and isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Numerous
showers and isolated thunderstorms.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 10 seconds.
Isolated showers.
.MONDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 feet or less.
Dominant Period 8 seconds. Isolated showers.

$$



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