374 WHCA52 TJSJ 180558 SMWSJU AMZ711-712-733-735-741-742-745-180730- /O.NEW.TJSJ.MA.W.0058.251018T0558Z-251018T0730Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service San Juan PR 158 AM AST Sat Oct 18 2025 The National Weather Service in San Juan has issued a * Special Marine Warning for... Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N... Caribbean Waters of Puerto Rico from 10 NM to 17N, including the Coastal Waters of Saint Croix... Coastal Waters OF Northwestern Puerto Rico out 10 NM... Coastal Waters OF Southwestern Puerto Rico out 10 NM... Coastal Waters of Northern Puerto Rico out 10 NM... Coastal Waters of Southern Puerto Rico out 10 NM... Mona Passage Southward to 17N... * Until 330 AM AST. * At 157 AM AST, severe thunderstorms capable of producing waterspouts were located along a line extending from 12 NM west of Aguadilla to about 20 NM south southwest of Mona Island. The severe thunderstorms were nearly stationary. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. Seek safe shelter, mariners can expect gusty winds and increasing waves. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. Report severe weather to the Coast Guard or the National Weather Service. && LAT...LON 1811 6771 1872 6764 1867 6695 1850 6699 1851 6714 1848 6717 1842 6715 1836 6727 1830 6724 1828 6719 1821 6715 1805 6720 1802 6716 1798 6722 1796 6721 1795 6715 1746 6755 1748 6800 1763 6800 TIME...MOT...LOC 0557Z 279DEG 2KT 1853 6749 1806 6751 1754 6794 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...>34KTS $$ CVB