Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 211327
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
927 AM AST Sun Jan 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.

AMZ700-220145-
927 AM AST Sun Jan 21 2018

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Surface high pressure in the west and central Atlantic later today
will increase the moderate to locally fresh trade winds through
Tuesday. A long period northerly swell will continue to spread
across the Atlantic waters and passages today and Monday, diminishing
slowly through Thursday.

$$

AMZ710-220145-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...East winds 10 to 15 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 10 seconds. North
swell 4 to 8 feet. Isolated showers.
.TONIGHT...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 7 feet. Isolated showers.
.MONDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 8 seconds. North
swell around 4 feet. Isolated showers.
.MONDAY NIGHT...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. 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.
.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.
.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.

$$

AMZ712-220145-
Coastal Waters of Northern Puerto Rico out 10 NM-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 10 seconds. North
swell 5 to 6 feet. Scattered showers.
.TONIGHT...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.
.MONDAY...East winds 10 to 15 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 8 seconds. Isolated
showers.
.MONDAY NIGHT...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...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 8 seconds. Scattered
showers.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. North
swell around 4 feet. Scattered showers.

$$

AMZ715-220145-
Coastal Waters of Northern USVI and Culebra out 10 NM-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...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.
.TONIGHT...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.
.MONDAY...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 5 Feet. Scattered showers.
.MONDAY 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.
.TUESDAY...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...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 8 seconds. Scattered
showers.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 8 seconds. Isolated
showers.

$$

AMZ722-220145-
Anegada Passage Southward to 17N-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...East 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 7 feet. Scattered showers.
.TONIGHT...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 7 feet. Scattered showers.
.MONDAY...East winds 15 to 20 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 7 seconds. North
swell 4 to 7 feet. Scattered showers.
.MONDAY NIGHT...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 15 to 20 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. Isolated
showers.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds.
Northeast swell around 4 feet. Isolated showers.

$$

AMZ725-220145-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
927 AM AST Sun Jan 21 2018

...SMALL CRAFT SHOULD EXERCISE CAUTION TODAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM AST THIS EVENING
THROUGH LATE MONDAY NIGHT...

.REST OF TODAY...East winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds. East
swell 4 to 5 feet. Scattered showers.
.TONIGHT...East 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 5 feet. Scattered showers.
.MONDAY...East 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. Scattered showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 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 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.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 8 seconds. Isolated
showers.

$$

AMZ732-220145-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 8 seconds. Scattered
showers.
.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.
.MONDAY...East winds 15 to 20 knots. Seas 4 to 7 feet with
occasional seas up to 8 feet. Dominant period 7 seconds. Scattered
showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 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.
.WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 10 seconds. Isolated
showers.
.THURSDAY...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.

$$

AMZ735-220145-
Coastal Waters of Southern Puerto Rico out 10 NM-
927 AM AST Sun Jan 21 2018

.REST OF TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 7 seconds. Scattered
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.
.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.
.MONDAY 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.
.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.
.WEDNESDAY...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.

$$

AMZ741-220145-
Mona Passage Southward to 17N-
927 AM AST Sun Jan 21 2018

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

.REST OF TODAY...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. Isolated showers.
.TONIGHT...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 5 feet. Isolated showers.
.MONDAY...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.
.MONDAY NIGHT...East 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.
.TUESDAY...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...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...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 5 feet. Scattered showers.

$$

AMZ742-220145-
Coastal Waters OF Northwestern Puerto Rico out 10 NM-
927 AM AST Sun Jan 21 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 5 to 10 knots. Seas 4 to 7 feet with
occasional seas up to 8 feet. Dominant period 10 seconds. North
swell 4 to 5 feet. Scattered showers.
.TONIGHT...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 5 feet. Scattered showers.
.MONDAY...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. Scattered showers.
.MONDAY 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.
.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.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 8 seconds. Scattered
showers.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 10 seconds.
Scattered showers.

$$

AMZ745-220145-
Coastal Waters OF Southwestern Puerto Rico out 10 NM-
927 AM AST Sun Jan 21 2018

.REST OF TODAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds. North
swell around 4 feet. Scattered showers.
.TONIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 10 seconds.
Northwest swell around 4 feet. Scattered showers.
.MONDAY...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. Isolated showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 8 seconds. Isolated
showers.
.TUESDAY...East 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. Isolated showers.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 1 to 3 feet.
Dominant period 7 seconds. Scattered showers.

$$



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