Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 240112
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
912 PM AST Tue Jan 23 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.

AMZ700-241415-
912 PM AST Tue Jan 23 2018

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Surface high pressure will continue to build across the west and
central Atlantic to maintain moderate to locally fresh trade winds
and a slight chop across the local waters through Thursday.
Increasing northeast winds and hazardous seas are forecast by Friday
and into the weekend due to the arrival of another long dominant
period northerly swell.

$$

AMZ710-241415-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
912 PM AST Tue Jan 23 2018

...Small Craft should exercise caution...

.REST OF TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 8 seconds.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 8 seconds.
Isolated showers.
.THURSDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 7 seconds.
Scattered showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 7 seconds. North
swell around 4 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. North
swell 5 to 10 feet. Scattered showers.
.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 11 seconds. North
swell 5 to 10 feet. Scattered showers.

$$

AMZ712-241415-
Coastal Waters of Northern Puerto Rico out 10 NM-
912 PM AST Tue Jan 23 2018

...Small Craft should exercise caution...

.REST OF TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 8 seconds.
Scattered showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Scattered
showers through the day.
.WEDNESDAY 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.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Scattered showers.
.FRIDAY...Northeast 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. 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. North
swell 5 to 10 feet. Scattered showers.
.SUNDAY...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 5 feet. Scattered showers.

$$

AMZ715-241415-
Coastal Waters of Northern USVI and Culebra out 10 NM-
912 PM AST Tue Jan 23 2018

.REST OF 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.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.WEDNESDAY 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.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY 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.
.FRIDAY...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.
.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 9 feet. Scattered 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 8 feet. Scattered showers.

$$

AMZ722-241415-
Anegada Passage Southward to 17N-
912 PM AST Tue Jan 23 2018

...Small Craft should exercise caution...

.REST OF TONIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 8 seconds.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Scattered
showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 7 seconds.
Isolated showers.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY 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.
.FRIDAY...Northeast 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. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 12 seconds. North
swell 5 to 10 feet. Scattered showers.
.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds. North
swell 5 to 10 feet. Isolated showers.

$$

AMZ725-241415-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
912 PM AST Tue Jan 23 2018

.REST OF 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.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers.
.WEDNESDAY 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.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY 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.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Northeast
swell around 4 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. North
swell 4 to 8 feet. Scattered 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 8 feet. Scattered showers.

$$

AMZ732-241415-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
912 PM AST Tue Jan 23 2018

.REST OF 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.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Scattered
showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Isolated showers.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY 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.
.FRIDAY...Northeast 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. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant Period 12 seconds. North
swell 4 to 9 feet. Scattered showers.
.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds. North
swell 5 to 10 feet. Scattered showers.

$$

AMZ735-241415-
Coastal Waters of Southern Puerto Rico out 10 NM-
912 PM AST Tue Jan 23 2018

.REST OF TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 7 seconds.
Isolated showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Scattered showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds. Scattered
showers.
.SATURDAY...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.
.SUNDAY...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 5 feet. Scattered showers.

$$

AMZ741-241415-
Mona Passage Southward to 17N-
912 PM AST Tue Jan 23 2018

.REST OF 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 through the night.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds. Scattered
showers through the day.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant Period 7 seconds.
Isolated showers through the night.
.THURSDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Scattered showers.
.FRIDAY...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.
.SATURDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant Period 10 seconds. North
swell 5 to 10 feet. Isolated showers.
.SUNDAY...East winds 15 to 20 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant Period 10 seconds.
Northeast swell 5 to 10 feet. Scattered showers.

$$

AMZ742-241415-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
912 PM AST Tue Jan 23 2018

.REST OF 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.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 seconds.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 7 seconds.
Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 7 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 8 feet. Scattered 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 8 feet. Isolated showers.

$$

AMZ745-241415-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
912 PM AST Tue Jan 23 2018

.REST OF TONIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3
feet. Dominant Period 7 seconds. Isolated showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to 3
feet. Dominant Period 7 seconds. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers.
.SATURDAY...Northeast 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 6 feet. Scattered showers.
.SUNDAY...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. Scattered showers.

$$



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