


Special Marine Warning
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
1
672 WHCA52 TJSJ 101713 SMWSJU AMZ711-712-741-742-101745- /O.NEW.TJSJ.MA.W.0019.250810T1713Z-250810T1745Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service San Juan PR 113 PM AST Sun Aug 10 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... Coastal Waters OF Northwestern Puerto Rico out 10 NM... Coastal Waters of Northern Puerto Rico out 10 NM... Mona Passage Southward to 17N... * Until 145 PM AST. * At 112 PM AST, a severe thunderstorm capable of producing waterspouts was located just offshore the Aguada and Aguadilla border, moving west at 15 knots. 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. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with this storm. 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 1864 6748 1851 6713 1848 6717 1842 6715 1838 6722 1837 6727 1833 6726 1837 6749 1836 6749 1838 6756 TIME...MOT...LOC 1712Z 106DEG 18KT 1842 6720 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...>34KTS $$ CVB