Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 210834
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
434 AM AST Wed Feb 21 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.

AMZ700-212130-
434 AM AST Wed Feb 21 2018

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Surface high pressure north of the region will continue to produce
hazardous seas across the local waters and all passages the rest of
the week due to the fresh to strong east northeast trade winds it is
generating. Brief passing showers with stronger gusts will be
encountered.

$$

AMZ710-212130-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 8 seconds. North
swell 4 to 6 feet. Scattered showers through the day.
.TONIGHT...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 15 feet. Dominant Period 10 seconds. North
swell 5 to 6 feet increasing to 6 to 11 feet after midnight.
Isolated showers.
.THURSDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 15 feet. Dominant Period 10 seconds.
Northeast swell 6 to 11 feet. Scattered showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 15 feet. Dominant Period 10 seconds.
Northeast swell 10 to 11 feet. Scattered showers.
.FRIDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds. North
swell 6 to 11 feet. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 9 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.
Northeast swell 4 to 7 feet. Isolated showers.

$$

AMZ712-212130-
Coastal Waters of Northern Puerto Rico out 10 NM-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 7 seconds. North
swell 4 to 5 feet. Numerous showers.
.TONIGHT...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet increasing to 6 to 11 feet after midnight.
Scattered showers.
.THURSDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 15 feet. Dominant Period 10 seconds.
Northeast swell 6 to 11 feet. Scattered showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 15 feet. Dominant Period 10 seconds.
Northeast swell 9 to 11 feet. Numerous showers.
.FRIDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 7 to 10 feet. Numerous showers.
.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 10 seconds.
Northeast 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 10 seconds.
Scattered showers.

$$

AMZ715-212130-
Coastal Waters of Northern USVI and Culebra out 10 NM-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 8 seconds. North
swell 4 to 5 feet. Numerous showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds. North
swell 5 to 10 feet. Scattered showers.
.THURSDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds. North
swell 5 to 10 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant Period 10 seconds.
North swell 5 to 10 feet. Numerous showers.
.FRIDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 10 seconds. North
swell 4 to 9 feet. Numerous showers.
.SATURDAY...Northeast 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.
.SUNDAY...Northeast 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.

$$

AMZ722-212130-
Anegada Passage Southward to 17N-
434 AM AST Wed Feb 21 2018

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

.TODAY...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 8 seconds. North
swell 4 to 5 feet. Scattered showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 15 feet. Dominant Period 10 seconds. North
swell 4 to 6 feet shifting to the northeast 6 to 11 feet after
midnight. Scattered showers.
.THURSDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 15 feet. Dominant Period 10 seconds. North
swell 6 to 11 feet. Isolated showers through the day.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 15 feet. Dominant Period 10 seconds.
Northeast swell 6 to 11 feet. Isolated showers.
.FRIDAY...East winds 15 to 20 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 6 to 11 feet. Scattered showers.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 10 seconds.
Northeast swell 4 to 8 feet. Isolated showers.
.SUNDAY...Northeast 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. Scattered showers.

$$

AMZ725-212130-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
434 AM AST Wed Feb 21 2018

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

.TODAY...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. Numerous showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 6 feet. Scattered showers.
.THURSDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 9 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 8 to 10 feet
with occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 9 feet. Scattered showers.
.FRIDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 10 seconds. East
swell 4 to 8 feet. Scattered showers.
.SATURDAY...Northeast winds 15 to 20 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.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Scattered showers.

$$

AMZ732-212130-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 7 seconds. North
swell 4 to 5 feet. Scattered showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds. North
swell 4 to 6 feet. Scattered showers.
.THURSDAY...Northeast winds 20 to 25 knots. Seas 10 to 12 feet
with occasional seas up to 15 feet. Dominant Period 10 seconds.
North swell 5 to 10 feet. Scattered showers through the day.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 5 to 10 feet. Isolated showers.
.FRIDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 9 feet. Scattered showers.
.SATURDAY...Northeast 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...Northeast 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.

$$

AMZ735-212130-
Coastal Waters of Southern Puerto Rico out 10 NM-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 7 seconds. East
swell around 4 feet. Isolated showers.
.TONIGHT...Northeast winds 20 to 25 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 night.
.THURSDAY...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. Isolated showers through the day.
.THURSDAY 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. Scattered showers through the
night.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Southeast
swell around 4 feet. Isolated showers.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ741-212130-
Mona Passage Southward to 17N-
434 AM AST Wed Feb 21 2018

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

.TODAY...East winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 8 seconds.
Northeast swell around 4 feet. Scattered showers through the day.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 4 to 5 feet. Isolated showers through the night.
.THURSDAY...East winds 20 to 25 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 5 to 10 feet. Isolated showers through the day.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 5 to 10 feet. Isolated showers.
.FRIDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 4 to 9 feet. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 10 seconds.
Northeast swell 4 to 8 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. Isolated
showers.

$$

AMZ742-212130-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
434 AM AST Wed Feb 21 2018

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

.TODAY...Northeast winds 20 to 25 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 8 seconds. North
swell around 4 feet. Isolated showers.
.TONIGHT...Northeast winds 20 to 25 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds. North
swell 4 to 8 feet. Isolated showers.
.THURSDAY...Northeast winds 20 to 25 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant Period 10 seconds.
North swell 4 to 8 feet.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant Period 10 seconds.
Northeast swell 4 to 8 feet. Isolated showers through the night.
.FRIDAY...Northeast 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 8 feet. Isolated showers.
.SATURDAY...Northeast 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 7 feet. Scattered showers.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds.
Scattered showers.

$$

AMZ745-212130-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
434 AM AST Wed Feb 21 2018

...Small Craft should exercise caution...

.TODAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Northwest swell 4 to 5 feet after midnight. Scattered showers.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Northwest swell 4 to 5 feet.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 10 seconds.
Northwest swell 4 to 5 feet. Isolated showers.
.FRIDAY...Northeast 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. Scattered showers.
.SATURDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
Scattered showers.
.SUNDAY...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Scattered showers.

$$



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