Coastal Waters Forecast
Issued by NWS San Juan, PR

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FZCA52 TJSJ 231344
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
944 AM AST Wed Sep 23 2020

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.

AMZ700-240215-
944 AM AST Wed Sep 23 2020

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A northerly swell is affecting the local waters and will continue
through Friday night, causing hazardous seas. Light to gentle
southerly winds will prevail across the regional waters today, with
winds more from the east after today. Showers and thunderstorms will
be possible across the regional waters for the next few days.

$$

AMZ710-240215-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
944 AM AST Wed Sep 23 2020

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

.REST OF TODAY...South winds 5 to 10 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant period 14 seconds.
North swell 10 to 11 feet. Scattered showers.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 14 seconds. North
swell 9 to 11 feet. Isolated thunderstorms in the evening.
Scattered showers through the night.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 8 to 10 feet. Isolated showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 13 seconds. North
swell 7 to 9 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 12 seconds. North
swell 4 to 6 feet. Isolated showers.
.SATURDAY...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.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 8 seconds. Isolated
showers.

$$

AMZ712-240215-
Coastal Waters of Northern Puerto Rico out 10 NM-
944 AM AST Wed Sep 23 2020

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

.REST OF TODAY...East winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 14 seconds. North
swell 9 to 10 feet. Scattered showers late in the morning, then
isolated thunderstorms in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 14 seconds. North
swell 9 to 11 feet. Isolated thunderstorms in the evening, then
isolated showers after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 14 seconds. North
swell 8 to 10 feet. Isolated showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 13 seconds. North
swell 7 to 9 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 12 seconds. North
swell 4 to 6 feet. Isolated showers.
.SATURDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. North
swell around 4 feet. Scattered showers.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 8 seconds. Isolated showers.

$$

AMZ715-240215-
Coastal Waters of Northern USVI and Culebra out 10 NM-
944 AM AST Wed Sep 23 2020

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

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet
with occasional seas up to 13 feet. Dominant period 13 seconds.
North swell 5 to 10 feet. Scattered showers late in the morning,
then isolated thunderstorms in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 5 to 10 feet. Isolated thunderstorms in the evening, then
scattered showers after midnight.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 5 to 10 feet. Scattered showers in the morning, then
isolated thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 13 seconds. North
swell 4 to 9 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds. North
swell 4 to 5 feet. Scattered showers.
.SATURDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. North
swell around 4 feet. Scattered showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 10 seconds. Isolated
showers.

$$

AMZ722-240215-
Anegada Passage Southward to 17N-
944 AM AST Wed Sep 23 2020

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

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet
with occasional seas up to 13 feet. Dominant period 12 seconds.
North swell 4 to 9 feet. Scattered showers through the day.
.TONIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 14 seconds. North
swell 5 to 10 feet. Isolated showers through the night.
.THURSDAY...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 13 seconds. North
swell 5 to 9 feet. Scattered showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 13 seconds. North
swell 4 to 8 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds. North
swell 4 to 5 feet. Scattered showers.
.SATURDAY...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.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$

AMZ725-240215-
Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out
10 NM-
944 AM AST Wed Sep 23 2020

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

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet
with occasional seas up to 11 feet. Dominant period 12 seconds.
Northeast swell 4 to 7 feet. Scattered showers late in the
morning, then isolated thunderstorms in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 12 seconds.
Northeast swell 4 to 8 feet. Scattered showers.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 11 feet. Dominant period 12 seconds.
Northeast swell 4 to 8 feet. Scattered showers through the day.
Isolated thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet with
occasional seas up to 10 feet. Dominant period 12 seconds. East
swell 4 to 7 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 12 seconds. East
swell 4 to 5 feet. Scattered showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds. East
swell around 4 feet. Scattered showers.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$

AMZ732-240215-
Caribbean Waters of Puerto Rico from 10 NM to 17N-
944 AM AST Wed Sep 23 2020

.REST OF TODAY...Southeast winds 5 to 10 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 through the day.
.TONIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
Northeast swell 4 to 5 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
Northeast swell 4 to 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
Northeast swell 4 to 5 feet. Scattered showers.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 12 seconds.
Scattered showers.
.SATURDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 11 seconds. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$

AMZ735-240215-
Coastal Waters of Southern Puerto Rico out 10 NM-
944 AM AST Wed Sep 23 2020

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet
with occasional seas up to 8 feet. Dominant period 11 seconds.
Southeast swell 4 to 5 feet. Isolated showers.
.TONIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 11 seconds. South
swell 4 to 5 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds. South
swell 4 to 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 12 seconds.
Southeast swell 4 to 5 feet. Isolated showers.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 12 seconds.
Southeast swell around 4 feet. Isolated showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 1 to 3 feet.
Dominant period 11 seconds. Isolated showers.
.SUNDAY...East winds 5 to 10 knots. Seas 2 feet or less. Dominant
period 10 seconds. Isolated showers.

$$

AMZ741-240215-
Mona Passage Southward to 17N-
944 AM AST Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.REST OF TODAY...Southeast winds around 10 knots. Seas 10 to 12
feet with occasional seas up to 14 feet. Dominant period 13
seconds. North swell 6 to 10 feet. Scattered showers through the
day.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 6 to 11 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 6 to 11 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 13 seconds. North
swell 5 to 9 feet. Scattered showers through the night.
.FRIDAY...East winds 5 to 10 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant period 13 seconds. North
swell 4 to 7 feet. Isolated showers.
.SATURDAY...East winds 10 to 15 knots. Seas 3 to 5 feet with
occasional seas up to 6 feet. Dominant period 11 seconds. North
swell around 4 feet. Isolated showers.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 10 seconds. Isolated
showers.

$$

AMZ742-240215-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
944 AM AST Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.REST OF TODAY...South winds 5 to 10 knots. Seas 10 to 12 feet
with occasional seas up to 14 feet. Dominant period 13 seconds.
North swell 4 to 9 feet. Scattered showers through the day.
Isolated thunderstorms in the afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 10 to 12 feet with
occasional seas up to 14 feet. Dominant period 13 seconds. North
swell 4 to 9 feet.
.THURSDAY...East winds 5 to 10 knots backing north in the
afternoon. Seas 10 to 12 feet with occasional seas up to 14 feet.
Dominant period 14 seconds. North swell 4 to 8 feet. Isolated
showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 14 seconds. North
swell 4 to 8 feet. Isolated showers.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds. North
swell 4 to 7 feet. Isolated showers.
.SATURDAY...Northeast 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. Isolated showers.
.SUNDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$

AMZ745-240215-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
944 AM AST Wed Sep 23 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.REST OF TODAY...Southeast winds around 10 knots. Seas 8 to 10
feet with occasional seas up to 13 feet. Dominant period 13
seconds. North swell 4 to 9 feet.
.TONIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 13 seconds. North
swell 5 to 10 feet.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 14 seconds. North
swell 5 to 10 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet with
occasional seas up to 13 feet. Dominant period 14 seconds. North
swell 4 to 9 feet. Isolated showers.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant period 13 seconds. North
swell 4 to 6 feet. Isolated showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet with
occasional seas up to 5 feet. Dominant period 11 seconds.
Northwest swell around 4 feet. Isolated showers.
.SUNDAY...East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant
period 10 seconds. Isolated showers.

$$


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