National Weather Service Marine Forecast FZCA52 TJSJ

FZCA52 TJSJ 062019
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
419 PM AST Fri Mar 6 2026

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-070930
419 PM AST Fri Mar 6 2026

SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS

A strong high pressure building from the western to central Atlantic will promote fresh to locally strong east-northeasterly winds, resulting in choppy to rough seas across most regional waters and local Caribbean passages. Therefore, hazardous marine conditions will prevail through at least early next week. A trade wind perturbation will bring an increase in showers thunderstorms from late tonight into early Saturday morning.

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AMZ711-070930
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 8 to 9 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers. Isolated thunderstorms late this evening and early morning.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas 8 to 9 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 9 seconds.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers in the morning.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 7 feet at 9 seconds.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers in the morning.

MONDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Scattered showers.

TUESDAY
East winds around 20 knots. Seas around 7 feet. Scattered showers in the morning.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas around 7 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 6 to 7 feet.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

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AMZ712-070930
Coastal Waters of Northern Puerto Rico out 10 NM
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 7 feet at 9 seconds. Scattered showers this evening, then numerous showers with isolated thunderstorms after midnight.

SATURDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 7 to 8 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

SUNDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Numerous showers, mainly in the morning.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

MONDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 6 to 7 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 6 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

WEDNESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 6 feet. Numerous showers.

Winds and seas higher in and near thunderstorms.

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AMZ716-070930
Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds 15 to 20 knots, increasing to 20 to 25 knots late. Seas 5 to 7 feet. Wave Detail: East 6 feet at 5 seconds and northeast 6 feet at 8 seconds. Scattered showers this evening. Isolated thunderstorms. Numerous showers after midnight.

SATURDAY
East winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 5 to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds and east 5 feet at 5 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 9 seconds and east 3 feet at 5 seconds. Scattered showers in the evening.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 7 feet. Wave Detail: Northeast 6 feet at 9 seconds and east 3 feet at 5 seconds. Scattered showers.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 4 to 7 feet. Wave Detail: Northeast 6 feet at 8 seconds and east 3 feet at 5 seconds. Scattered showers.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers.

MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

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AMZ723-070930
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 7 seconds and northeast 7 feet at 9 seconds. Scattered showers. Isolated thunderstorms late this evening and early morning.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 7 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: Northeast 7 feet at 9 seconds and east 5 feet at 6 seconds.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: Northeast 7 feet at 8 seconds and east 6 feet at 7 seconds. Scattered showers in the morning.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: East 7 feet at 8 seconds. Scattered showers.

MONDAY
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 8 seconds. Scattered showers in the morning.

MONDAY NIGHT
East winds around 20 knots with gusts up to 25 knots. Seas 6 to 7 feet. Scattered showers.

TUESDAY
East winds around 20 knots. Seas 6 to 7 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

WEDNESDAY NIGHT
East winds around 15 knots. Seas 5 to 6 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

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AMZ726-070930
Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 7 seconds and east 6 feet at 8 seconds. Scattered showers this evening. Isolated thunderstorms. Numerous showers after midnight.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 7 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 9 seconds and east 4 feet at 7 seconds. Scattered showers in the evening.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered showers.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 5 feet. Numerous showers.

Winds and seas higher in and near thunderstorms.

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AMZ733-070930
Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: East 7 feet at 7 seconds and northeast 5 feet at 9 seconds. Isolated showers early this evening. Scattered showers late this evening and overnight. Isolated thunderstorms after midnight.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 8 seconds. Scattered showers.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds and northeast 5 feet at 9 seconds. Scattered showers in the evening.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds and northeast 5 feet at 9 seconds. Scattered showers.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Southeast 5 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers in the morning.

MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas around 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas around 6 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas around 6 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet. Numerous showers.

Winds and seas higher in and near thunderstorms.

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AMZ735-070930
Coastal Waters of Southern Puerto Rico out 10 NM
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON

TONIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots late this evening and overnight. Gusts up to 30 knots. Seas 4 to 7 feet. Wave Detail: East 6 feet at 7 seconds. Isolated showers early this evening. Scattered showers late this evening and overnight. Isolated thunderstorms after midnight.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 7 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 7 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers in the evening.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers in the morning.

MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 3 to 5 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Scattered showers.

WEDNESDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet. Scattered showers in the morning.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet. Numerous showers.

Winds and seas higher in and near thunderstorms.

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AMZ741-070930
Mona Passage Southward to 17N
419 PM AST Fri Mar 6 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT

TONIGHT
East winds 20 to 25 knots, diminishing to 15 to 20 knots late this evening and overnight. Seas 6 to 8 feet. Wave Detail: Southeast 8 feet at 7 seconds and northeast 5 feet at 8 seconds.

SATURDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 6 to 8 feet. Wave Detail: East 8 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 5 feet at 8 seconds.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers in the evening.

MONDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 5 feet at 8 seconds. Scattered showers in the morning.

MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

WEDNESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers in the morning.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

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AMZ742-070930
Coastal Waters of Northwestern Puerto Rico out 10 NM
419 PM AST Fri Mar 6 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 3 feet at 7 seconds. Isolated showers.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 3 feet at 6 seconds. Numerous showers in the afternoon.

SATURDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 2 feet at 7 seconds.

SUNDAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 1 foot at 7 seconds. Numerous showers in the afternoon.

SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds and south 1 foot at 7 seconds.

MONDAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds and southeast 1 foot at 7 seconds. Scattered showers in the afternoon.

MONDAY NIGHT
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet. Scattered showers.

TUESDAY
East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet. Scattered showers.

WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet. Numerous showers in the afternoon.

WEDNESDAY NIGHT
East winds 15 to 20 knots. Seas 3 to 5 feet. Scattered showers.

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AMZ745-070930
Coastal Waters of Southwestern Puerto Rico out 10 NM
419 PM AST Fri Mar 6 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots, becoming northeast 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 4 feet at 6 seconds and north 1 foot at 8 seconds.

SATURDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. Scattered showers in the afternoon.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet. Wave Detail: East 3 feet at 6 seconds and north 1 foot at 8 seconds.

SUNDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds and north 1 foot at 7 seconds.

MONDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers in the afternoon.

MONDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet.

TUESDAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet.

WEDNESDAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.

WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers.