Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 211412
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
1012 AM AST Fri Jul 21 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.

AMZ700-220315-
1012 AM AST Fri Jul 21 2017

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A surge of moisture will continue to produce showers and gusty winds
across the local waters the rest of today. A broad surface high
pressure across the Central Atlantic will continue to promote
moderate to locally fresh easterly trade winds through at least
Tuesday. Small craft operators should continue to exercise caution
due to choppy marine conditions until winds and seas subside on
Saturday. A tropical wave is forecast to enter the Eastern Caribbean
on Saturday, increasing shower and thunderstorm activity across the
regional waters.

$$

AMZ710-220315-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.TONIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.SATURDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 9 seconds. Isolated
showers.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 9 seconds. Numerous
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 8 seconds. Isolated
thunderstorms, then 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.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.

$$

AMZ712-220315-
Coastal Waters of Northern Puerto Rico out 10 NM-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Scattered
showers.
.TONIGHT...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 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.SATURDAY 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 and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated showers.

$$

AMZ715-220315-
Coastal Waters of Northern USVI and Culebra out 10 NM-
1012 AM AST Fri Jul 21 2017

.REST OF TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. 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. Scattered
showers.
.SATURDAY...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 NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Numerous
showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated showers.

$$

AMZ722-220315-
Anegada Passage Southward to 17N-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. 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.
.SATURDAY...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 NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Numerous
showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
thunderstorms. Scattered 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.
.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.

$$

AMZ725-220315-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. 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. Scattered
showers.
.SATURDAY...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 NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Numerous
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 8 seconds. Isolated
thunderstorms. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 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. Scattered
showers.

$$

AMZ732-220315-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Numerous
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.
.SATURDAY...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 NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Numerous
showers and isolated thunderstorms.
.SUNDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
thunderstorms. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
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.

$$

AMZ735-220315-
Coastal Waters of Southern Puerto Rico out 10 NM-
1012 AM AST Fri Jul 21 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 7 seconds. Isolated
showers.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers through the night.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers.
.SATURDAY NIGHT...East winds 10 to 15 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.
.SUNDAY...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.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 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.

$$

AMZ741-220315-
Mona Passage Southward to 17N-
1012 AM AST Fri Jul 21 2017

...Small Craft should exercise caution...

.REST OF TODAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers late in the morning, then isolated thunderstorms in the
afternoon.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers through the night.
.SATURDAY...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 NIGHT...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 7 seconds. Isolated
showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ742-220315-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
1012 AM AST Fri Jul 21 2017

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Numerous showers through the day. Isolated thunderstorms in the
afternoon.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers through the night.
.SATURDAY...Northeast 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 afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers through the night.
.SUNDAY...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.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
thunderstorms, then isolated showers.
.TUESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated showers.

$$

AMZ745-220315-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
1012 AM AST Fri Jul 21 2017

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 7 seconds.
Isolated showers late in the morning, then isolated thunderstorms
in the afternoon.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds.
.SATURDAY...East winds 5 to 10 knots backing northeast in the
afternoon. Seas 1 to 3 feet. Dominant Period 7 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated thunderstorms. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated thunderstorms, then isolated showers.
.TUESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds. Isolated showers.

$$



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