Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 180744
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
344 AM AST Thu Jan 18 2018

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.

AMZ700-182015-
344 AM AST Thu Jan 18 2018

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Surface high pressure in the north central Atlantic will continue to
weaken through the end of the week. A frontal boundary will linger
to the west of this high pressure while an induced surface trough
continue to weaken north of the region through Friday. Another high
pressure ridge will move into the west and central Atlantic over the
weekend. This will maintain a moderate to locally fresh trade winds
across the regional waters.

$$

AMZ710-182015-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
344 AM AST Thu Jan 18 2018

...Small Craft should exercise caution...

.TODAY...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. Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Northeast
swell 4 to 5 feet in the evening. Isolated showers.
.FRIDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Isolated
showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. Isolated
showers.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 10 seconds. North
swell 4 to 7 feet. Isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 10 seconds. North
swell 4 to 7 feet. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 10 seconds. North
swell 4 to 8 feet. Scattered showers.

$$

AMZ712-182015-
Coastal Waters of Northern Puerto Rico out 10 NM-
344 AM AST Thu Jan 18 2018

...Small Craft should exercise caution...

.TODAY...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Northeast swell 4 to 5 feet. Isolated showers.
.TONIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Northeast
swell 4 to 5 feet in the evening. Isolated showers.
.FRIDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Isolated
showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. Isolated
showers.
.SATURDAY...East winds 10 to 15 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.
.SUNDAY...East winds 10 to 15 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.
.MONDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. Isolated
showers.

$$

AMZ715-182015-
Coastal Waters of Northern USVI and Culebra out 10 NM-
344 AM AST Thu Jan 18 2018

...Small Craft should exercise caution...

.TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. North
swell around 4 Feet. Scattered showers.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 9 seconds. Isolated
showers.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 9 seconds. Isolated
showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. Isolated
showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 11 seconds. North
swell 4 to 6 feet. Scattered showers.
.SUNDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. North
swell 4 to 7 feet. Isolated showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet. Scattered showers.

$$

AMZ722-182015-
Anegada Passage Southward to 17N-
344 AM AST Thu Jan 18 2018

...Small Craft should exercise caution...

.TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Isolated
showers.
.TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.FRIDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.FRIDAY NIGHT...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 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 showers.
.SUNDAY...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.
.MONDAY...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. Scattered showers.

$$

AMZ725-182015-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
344 AM AST Thu Jan 18 2018

...Small Craft should exercise caution...

.TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. East
swell 4 to 5 Feet. Scattered showers.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.
.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.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. East
swell around 4 feet. Isolated showers.
.SATURDAY...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. Scattered showers.
.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. Isolated showers.
.MONDAY...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.

$$

AMZ732-182015-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
344 AM AST Thu Jan 18 2018

.TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. East
swell around 4 feet. Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.
.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.
.FRIDAY NIGHT...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. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 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 11 seconds. North
swell 4 to 5 feet. Scattered showers.
.MONDAY...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. Scattered showers.

$$

AMZ735-182015-
Coastal Waters of Southern Puerto Rico out 10 NM-
344 AM AST Thu Jan 18 2018

.TODAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.TONIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 8 seconds. Isolated showers.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 7 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
showers.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. Isolated
showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ741-182015-
Mona Passage Southward to 17N-
344 AM AST Thu Jan 18 2018

.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 4 to 5 feet. Isolated showers.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 9 seconds. North
swell around 4 feet in the evening. Isolated showers.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers.
.SATURDAY...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.
.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 6 feet. Isolated showers.
.MONDAY...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.

$$

AMZ742-182015-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
344 AM AST Thu Jan 18 2018

.TODAY...Northeast 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 showers.
.TONIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.SATURDAY...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 6 feet. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet. Scattered showers.
.MONDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.

$$

AMZ745-182015-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
344 AM AST Thu Jan 18 2018

.TODAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 10 seconds. Isolated showers.
.TONIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 9 seconds. Isolated showers.
.FRIDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 8 seconds. Scattered showers.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 10 seconds. Scattered showers.
.SATURDAY...East winds 5 to 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.
.SUNDAY...East 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. Isolated showers.
.MONDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Scattered
showers.

$$



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