Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 222020
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
420 PM AST Mon Jan 22 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.

AMZ700-230930-
420 PM AST Mon Jan 22 2018

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Surface high pressure across the west and central Atlantic will
maintain moderate to locally fresh trade winds through Tuesday. A
long period northerly swell will continue to affect the Atlantic
waters and local passages tonight but will slowly subside through
Tuesday.

$$

AMZ710-230930-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. North
swell around 4 feet. Isolated showers.
.TUESDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 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.
.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...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 11 seconds.
Northeast swell 4 to 5 feet. Scattered showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 12 seconds. North
swell 4 to 8 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 8 feet. Scattered showers.

$$

AMZ712-230930-
Coastal Waters of Northern Puerto Rico out 10 NM-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM AST TUESDAY...

.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
showers.
.TUESDAY NIGHT...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 3 to 5 feet
with occasional seas up to 6 feet. Dominant Period 8 seconds.
Isolated showers.
.THURSDAY...East winds 10 to 15 knots with gusts to around 30
knots. Seas 3 to 5 feet with occasional seas up to 6 feet.
Dominant Period 11 seconds. North swell around 4 feet. Scattered
showers.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 12 seconds. North
swell 4 to 6 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 8 feet. Scattered showers.

$$

AMZ715-230930-
Coastal Waters of Northern USVI and Culebra out 10 NM-
420 PM AST Mon Jan 22 2018

...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 8 seconds. Isolated
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.
.TUESDAY NIGHT...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 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 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...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 11 seconds.
Northeast swell around 4 feet. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 12 seconds. North
swell 4 to 6 feet. Scattered showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 12 seconds. North
swell 4 to 8 feet. Scattered showers.

$$

AMZ722-230930-
Anegada Passage Southward to 17N-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Scattered
showers.
.TUESDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 8 seconds. Scattered
showers.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Scattered
showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 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...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 11 seconds.
Northeast swell 4 to 5 feet. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 12 seconds. North
swell 4 to 7 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 8 feet. Scattered showers.

$$

AMZ725-230930-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM AST TUESDAY...

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

$$

AMZ732-230930-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM AST TUESDAY...

.TONIGHT...East winds 15 to 20 knots. Seas 4 to 7 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Scattered
showers.
.TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Scattered
showers.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 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...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 11 seconds. North
swell 4 to 5 feet. Isolated showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 12 seconds. North
swell 4 to 7 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 8 feet. Scattered showers.

$$

AMZ735-230930-
Coastal Waters of Southern Puerto Rico out 10 NM-
420 PM AST Mon Jan 22 2018

.TONIGHT...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...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 NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet
with occasional seas up to 5 feet. Dominant Period 7 seconds.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers.
.WEDNESDAY 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.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds. Scattered
showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Scattered
showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 10 seconds.
Scattered showers.

$$

AMZ741-230930-
Mona Passage Southward to 17N-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING...

.TONIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Isolated
showers through the night.
.TUESDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Isolated
showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 8 seconds. Isolated
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...Northeast winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 11 seconds. East
swell 4 to 5 feet. Scattered showers.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 12 seconds.
Northeast swell 4 to 7 feet. Isolated 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 8 feet. Isolated showers.

$$

AMZ742-230930-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
420 PM AST Mon Jan 22 2018

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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 through the night.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant Period 8 seconds.
.TUESDAY 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 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.
.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...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 10 seconds. South
swell around 4 feet. Scattered showers.
.FRIDAY...Northeast winds 15 to 20 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.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 12 seconds. North
swell 4 to 8 feet. Isolated showers.

$$

AMZ745-230930-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
420 PM AST Mon Jan 22 2018

.TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 8 seconds. Isolated
showers through the night.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant Period 7 seconds.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
Period 7 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Isolated showers.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant Period 7 seconds. Scattered showers.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 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 10 seconds. North
swell around 4 feet. Isolated showers.

$$


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