Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 142033
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
433 PM AST Thu Dec 14 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.

AMZ700-150915-
433 PM AST Thu Dec 14 2017

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A surface high pressure across the east central Atlantic and a weakening
frontal trough northwest of the region, will maintain gentle to moderate
easterly winds across the regional waters. By Friday and through the upcoming
weekend, a high pressure ridge will build and spread across the western
Atlantic. This in turn will increase the local pressure gradient and promote
moderate to fresh east to northeast trade winds. A northerly swell will
arrive and spread across the Atlantic waters and local passages late tonight
through Friday.

$$

AMZ710-150915-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
433 PM AST Thu Dec 14 2017


...SMALL CRAFT EXERCISE CAUTION TONIGHT...
...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH LATE
FRIDAY NIGHT...

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

$$

AMZ712-150915-
Coastal Waters of Northern Puerto Rico out 10 NM-
433 PM AST Thu Dec 14 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 11 seconds.
Northeast swell around 4 feet shifting to the north 4 to 5 feet
after midnight. Isolated showers.
.FRIDAY...East winds 10 to 15 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 NIGHT...East winds 10 to 15 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.
.SATURDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. North
swell 4 to 5 feet. Isolated showers.
.SATURDAY NIGHT...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 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. 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.
Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers.

$$

AMZ715-150915-
Coastal Waters of Northern USVI and Culebra out 10 NM-
433 PM AST Thu Dec 14 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 12 seconds. North
swell 4 to 5 feet. Scattered showers.
.FRIDAY...East winds 10 to 15 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 NIGHT...East winds 10 to 15 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.
.SATURDAY...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.
.SATURDAY NIGHT...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 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Scattered
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 around 4 feet. Scattered showers.
.TUESDAY...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. Scattered showers.

$$

AMZ722-150915-
Anegada Passage Southward to 17N-
433 PM AST Thu Dec 14 2017

...SMALL CRAFT SHOULD EXERCISE CAUTION ON FRIDAY...

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

$$

AMZ725-150915-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
433 PM AST Thu Dec 14 2017

.TONIGHT...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 after midnight. Scattered showers.
.FRIDAY...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.
.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...Northeast winds 15 to 20 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 NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 7 seconds.
Isolated showers.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. North
swell around 4 feet. Scattered showers.
.MONDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Southeast swell 4 to 5 feet. Scattered showers.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 10 seconds. East
swell around 4 feet. Scattered showers.

$$

AMZ732-150915-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
433 PM AST Thu Dec 14 2017

.TONIGHT...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 after midnight. Isolated showers
through the night.
.FRIDAY...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.
.FRIDAY NIGHT...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 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.SATURDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant Period 7 seconds.
Isolated showers.
.SUNDAY...Northeast winds 20 to 25 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 7 seconds. North
swell around 4 feet. Scattered showers.
.MONDAY...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 11 seconds.
Northeast swell around 4 feet. Scattered showers.
.TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds. North
swell around 4 feet. Isolated showers.

$$

AMZ735-150915-
Coastal Waters of Southern Puerto Rico out 10 NM-
433 PM AST Thu Dec 14 2017

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds.
.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 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Isolated
showers.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Isolated showers.
.SUNDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.MONDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.

$$

AMZ741-150915-
Mona Passage Southward to 17N-
433 PM AST Thu Dec 14 2017

...Small Craft should exercise caution...

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

$$

AMZ742-150915-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
433 PM AST Thu Dec 14 2017

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

$$

AMZ745-150915-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
433 PM AST Thu Dec 14 2017

.TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 12 seconds.
Northwest swell around 4 feet after midnight.
.FRIDAY...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.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 11 seconds.
Isolated showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. Isolated
showers.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 8 seconds.
Isolated showers.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.MONDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 8 seconds. Isolated showers.

$$



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