619  
FZCA52 TJSJ 201432  
CWFSJU  
 
COASTAL WATERS FORECAST  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1032 AM AST FRI JUL 20 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.  
 
AMZ700-210330-  
1032 AM AST FRI JUL 20 2018  
   
SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS
 
 
STRONG HIGH PRESSURE ACROSS THE CENTRAL ATLANTIC WILL CONTINUE TO  
PRODUCE MODERATE TO FRESH TRADE WINDS ACROSS THE LOCAL WATERS  
THROUGH THE WEEKEND. CHOPPY SEAS WILL CONTINUE THROUGH AT LEAST  
EARLY NEXT WEEK. THE CHANCES OF SHOWERS AND THUNDERSTORMS INCREASES  
AGAIN ON SUNDAY AS AN UPPER TROUGH PROMOTES UNSTABLE CONDITIONS  
ACROSS THE NORTHEAST CARIBBEAN.  
 

 
 
AMZ710-210330-  
ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO 19.5N-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
SATURDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 8 SECONDS. ISOLATED  
SHOWERS THROUGH THE DAY.   
SATURDAY 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.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS. ISOLATED  
SHOWERS.   
MONDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 10 SECONDS.  
NORTHEAST SWELL AROUND 4 FEET. ISOLATED SHOWERS.   
TUESDAY
 
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.  
 

 
 
AMZ712-210330-  
COASTAL WATERS OF NORTHERN PUERTO RICO OUT 10 NM-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
TONIGHT
 
EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 8 SECONDS.   
SATURDAY
 
EAST WINDS 15 TO 20 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 THROUGH THE NIGHT.   
SUNDAY
 
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 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 10 TO 15 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS. ISOLATED  
SHOWERS.  
 

 
 
AMZ715-210330-  
COASTAL WATERS OF NORTHERN USVI AND CULEBRA OUT 10 NM-  
1032 AM AST FRI JUL 20 2018  
   
..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 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS.   
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. ISOLATED  
SHOWERS.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS. ISOLATED  
SHOWERS.   
MONDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 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 7 SECONDS. ISOLATED  
SHOWERS.  
 

 
 
AMZ722-210330-  
ANEGADA PASSAGE SOUTHWARD TO 17N-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
TONIGHT
 
EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 7 SECONDS.   
SATURDAY
 
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 DAY.   
SATURDAY NIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS. ISOLATED  
SHOWERS.   
MONDAY
 
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. 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.  
NORTHEAST SWELL AROUND 4 FEET. ISOLATED SHOWERS.  
 

 
 
AMZ725-210330-  
COASTAL WATERS OF SOUTHERN USVI VIEQUES AND EASTERN PUERTO RICO  
OUT 10 NM-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
TONIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 7 SECONDS. ISOLATED  
SHOWERS.   
SATURDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 7 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 8 SECONDS. ISOLATED  
SHOWERS.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 8 SECONDS. ISOLATED  
SHOWERS.   
MONDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 10 SECONDS.  
SCATTERED 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.  
 

 
 
AMZ732-210330-  
CARIBBEAN WATERS OF PUERTO RICO FROM 10 NM TO 17N-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
TONIGHT
 
EAST WINDS 15 TO 20 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 7 SECONDS.   
SATURDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 7 SECONDS. ISOLATED  
SHOWERS THROUGH THE DAY.   
SATURDAY NIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 7 SECONDS.   
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 10 SECONDS. EAST  
SWELL 4 TO 5 FEET. ISOLATED 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 4 TO 5 FEET. ISOLATED SHOWERS.  
 

 
 
AMZ735-210330-  
COASTAL WATERS OF SOUTHERN PUERTO RICO OUT 10 NM-  
1032 AM AST FRI JUL 20 2018  
   
..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.   
TONIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 7 SECONDS.   
SATURDAY
 
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 7 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.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 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 10 TO 15 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 10 SECONDS.  
SOUTHEAST SWELL AROUND 4 FEET. ISOLATED SHOWERS.  
 

 
 
AMZ741-210330-  
MONA PASSAGE SOUTHWARD TO 17N-  
1032 AM AST FRI JUL 20 2018  
   
..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 THROUGH THE DAY.   
TONIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 6 FEET WITH  
OCCASIONAL SEAS UP TO 8 FEET. DOMINANT PERIOD 7 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 THROUGH THE DAY.   
SATURDAY 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.   
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 10 SECONDS.  
NORTHEAST SWELL 4 TO 5 FEET. ISOLATED SHOWERS.   
TUESDAY
 
EAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET WITH  
OCCASIONAL SEAS UP TO 6 FEET. DOMINANT PERIOD 10 SECONDS.  
NORTHEAST SWELL 4 TO 5 FEET. ISOLATED SHOWERS.  
 

 
 
AMZ742-210330-  
COASTAL WATERS OF NORTHWESTERN PUERTO RICO OUT 10 NM-  
1032 AM AST FRI JUL 20 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.   
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.   
SATURDAY
 
NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS.   
SATURDAY NIGHT
 
EAST WINDS 10 TO 15 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS.   
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 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS. ISOLATED  
THUNDERSTORMS. SCATTERED SHOWERS.   
TUESDAY
 
EAST WINDS 5 TO 10 KNOTS. SEAS 1 TO 3 FEET. DOMINANT  
PERIOD 7 SECONDS. ISOLATED SHOWERS.  
 

 
 
AMZ745-210330-  
COASTAL WATERS OF SOUTHWESTERN PUERTO RICO OUT 10 NM-  
1032 AM AST FRI JUL 20 2018  
   
..SMALL CRAFT SHOULD EXERCISE CAUTION
 
 
   
REST OF TODAY
 
SOUTHEAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET  
WITH OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS.  
ISOLATED SHOWERS.   
TONIGHT
 
EAST WINDS 15 TO 20 KNOTS. SEAS 2 TO 4 FEET WITH  
OCCASIONAL SEAS UP TO 5 FEET. DOMINANT PERIOD 7 SECONDS.   
SATURDAY
 
SOUTHEAST 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 1 TO 3 FEET.  
DOMINANT PERIOD 7 SECONDS.   
SUNDAY
 
EAST WINDS 10 TO 15 KNOTS. SEAS 1 TO 3 FEET. DOMINANT  
PERIOD 7 SECONDS. SCATTERED SHOWERS.   
MONDAY
 
EAST WINDS 15 TO 20 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.  
 

 
 
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