787
WHCA72 TJSJ 171157
MWWSJU
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN JUAN PR
757 AM AST SUN AUG 17 2025
AMZ711-172000-
/O.CON.TJSJ.TR.W.2001.000000T0000Z-000000T0000Z/
/O.EXT.TJSJ.SC.Y.0030.250817T2100Z-250818T1000Z/
ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO 19.5N-
757 AM AST SUN AUG 17 2025
..TROPICAL STORM WARNING REMAINS IN EFFECT
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO
6 AM AST MONDAY...
* WHAT...FOR THE TROPICAL STORM WARNING, WINDS 25 TO 45 KT WITH
GUSTS UP TO 60 KT AND SEAS BUILDING 8 TO 14 FT. FOR THE SMALL
CRAFT ADVISORY, SOUTH WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT
AND SEAS 8 TO 13 FT EXPECTED.
* WHERE...ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO
19.5N.
* WHEN...FOR THE TROPICAL STORM WARNING, UNTIL 5 PM AST THIS
AFTERNOON. FOR THE SMALL CRAFT ADVISORY, FROM 5 PM THIS
AFTERNOON TO 6 AM AST MONDAY.
* IMPACTS...TROPICAL STORM FORCE WINDS AND HAZARDOUS SEAS WILL
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
AMZ712-716-723-726-733-741-172000-
/O.CON.TJSJ.SC.Y.0029.000000T0000Z-250818T1000Z/
COASTAL WATERS OF NORTHERN PUERTO RICO OUT 10 NM-
COASTAL WATERS FROM CABO SAN JUAN TO THE WATERS BETWEEN ANEGADA
ISLAND AND VIRGIN GORDA AND NORTH 10 NM-
ANEGADA PASSAGE EAST OF VIRGIN GORDA AND SAINT CROIX SOUTH TO 17N-
COASTAL WATERS EAST OF PUERTO RICO, AROUND VIEQUES, AND AROUND
AND JUST NORTH OF CULEBRA AND SAINT JOHN-
CARIBBEAN WATERS OF PUERTO RICO FROM 10 NM TO 17N, INCLUDING THE
COASTAL WATERS OF SAINT CROIX-MONA PASSAGE SOUTHWARD TO 17N-
757 AM AST SUN AUG 17 2025
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM AST MONDAY
* WHAT...WINDS 15 TO 25 KNOTS WITH GUSTS UP TO 35 KNOTS. SEAS
BUILDING 6 TO 9 FT EXPECTED.
* WHERE...COASTAL WATERS OF NORTHERN PUERTO RICO, FROM CABO SAN
JUAN TO THE WATERS BETWEEN ANEGADA ISLAND AND VIRGIN GORDA,
EAST OF PUERTO RICO, AROUND VIEQUES, AND AROUND AND JUST NORTH
OF CULEBRA AND SAINT JOHN, AS WELL AS THE CARIBBEAN WATERS OF
PUERTO RICO, INCLUDING THE COASTAL WATERS OF SAINT CROIX.
* WHEN...THROUGH 6 AM AST MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
AMZ742-172000-
/O.CON.TJSJ.SC.Y.0030.250817T1200Z-250818T1000Z/
COASTAL WATERS OF NORTHWESTERN PUERTO RICO OUT 10 NM-
757 AM AST SUN AUG 17 2025
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM AST MONDAY
* WHAT...SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND
SEAS 6 TO 9 FT EXPECTED.
* WHERE...COASTAL WATERS OF NORTHWESTERN PUERTO RICO OUT 10 NM.
* WHEN...FOR THE SMALL CRAFT ADVISORY, FROM 8 AM THIS MORNING TO
6 AM AST MONDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
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