Coastal Waters Forecast
Issued by NWS San Juan, PR

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258
FZCA52 TJSJ 181359
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
Issued by National Weather Service Miami FL
959 AM AST Wed Oct 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.

AMZ700-190215-
959 AM AST Wed Oct 18 2017

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
With the tropical wave moving from east to west south of the Islands
today, most of the shower and thunderstorm activity will be
concentrated to the south. However, cannot rule out additional
convection north of the island, albeit less likely. Any thunderstorm
will be capable of producing high and choppy seas, gusty winds and
lightning. Drier air is forecast to move into the region this
afternoon from east to west, reducing the chance for showers and
thunderstorms tonight into tomorrow.

$$

AMZ710-190215-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
959 AM AST Wed Oct 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY Evening...

.REST OF TODAY...Southeast 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. Isolated showers late in the morning.
.TONIGHT...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 6 feet. Isolated thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Northeast
swell 4 to 6 feet. Isolated thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. North
swell 4 to 6 feet. Isolated thunderstorms in the evening, then
isolated showers after midnight.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell 4 to 5 feet. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. Isolated
showers.

$$

AMZ712-190215-
Coastal Waters of Northern Puerto Rico out 10 NM-
959 AM AST Wed Oct 18 2017

.REST OF TODAY...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.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Northeast
swell around 4 feet in the evening. Scattered showers in the
evening. Isolated thunderstorms through the night.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Northeast
swell around 4 feet. Isolated thunderstorms.
.THURSDAY NIGHT...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 evening. Isolated
thunderstorms in the evening, then isolated showers after
midnight.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.

$$

AMZ715-190215-
Coastal Waters of Northern USVI and Culebra out 10 NM-
959 AM AST Wed Oct 18 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Northeast swell around 4 feet. Isolated thunderstorms.
.TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Northeast swell around 4 feet in the evening. Isolated
thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Northeast
swell around 4 feet. Isolated thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 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, then
isolated showers after midnight.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. Isolated
thunderstorms, then isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ722-190215-
Anegada Passage Southward to 17N-
959 AM AST Wed Oct 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY Evening...

.REST OF TODAY...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 7 feet. Isolated showers.
.TONIGHT...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. Isolated thunderstorms.
.THURSDAY...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 7 feet. Isolated thunderstorms.
.THURSDAY 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 6 feet. Isolated thunderstorms in the
evening, then isolated showers after midnight.
.FRIDAY...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 6 feet. 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
showers.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ725-190215-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
959 AM AST Wed Oct 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY Evening...

.REST OF TODAY...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 6 feet. Scattered showers and isolated
thunderstorms.
.TONIGHT...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 thunderstorms.
.THURSDAY...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 6 feet. Isolated thunderstorms.
.THURSDAY 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 thunderstorms in the
evening, then isolated showers after midnight.
.FRIDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Southeast swell 4 to 5 feet. Isolated thunderstorms, then isolated
showers.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ732-190215-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
959 AM AST Wed Oct 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY Evening...

.REST OF TODAY...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 6 feet. Numerous showers and scattered thunderstorms.
.TONIGHT...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 7 feet. Isolated thunderstorms.
.THURSDAY...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 7 feet. Isolated thunderstorms.
.THURSDAY 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 7 feet. Isolated thunderstorms in the evening, then
isolated showers after midnight.
.FRIDAY...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 7 feet. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet. Isolated thunderstorms, then isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet. Isolated showers.

$$

AMZ735-190215-
Coastal Waters of Southern Puerto Rico out 10 NM-
959 AM AST Wed Oct 18 2017

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

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

$$

AMZ741-190215-
Mona Passage Southward to 17N-
959 AM AST Wed Oct 18 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY Evening...

.REST OF TODAY...Southeast 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 6 feet. Numerous showers and scattered
thunderstorms.
.TONIGHT...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 7 feet. Isolated thunderstorms.
.THURSDAY...East winds 20 to 25 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 11 seconds.
Northeast swell 4 to 7 feet. Isolated showers in the morning.
.THURSDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 11 seconds. North
swell 4 to 7 feet. Isolated thunderstorms in the evening, then
isolated showers after midnight.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. North
swell 4 to 7 feet. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. North
swell around 4 feet. Isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 10 seconds. North
swell around 4 feet. Isolated showers.

$$

AMZ742-190215-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
959 AM AST Wed Oct 18 2017

.REST OF TODAY...Southeast 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.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers in the evening. Isolated thunderstorms through the night.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
thunderstorms in the evening, then isolated showers after
midnight.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SATURDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 8 seconds. Isolated thunderstorms, then isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
thunderstorms, then isolated showers.

$$

AMZ745-190215-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
959 AM AST Wed Oct 18 2017

...Small Craft should exercise caution...

.REST OF TODAY...Southeast winds 15 to 20 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 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Southwest swell around 4 feet after midnight. Scattered showers in
the evening. Isolated thunderstorms through the night.
.THURSDAY...Southeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 11 seconds.
Southwest swell around 4 feet.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Southwest swell around 4 feet. Isolated thunderstorms in the
evening, then isolated showers after midnight.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms, then isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.

$$



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