WHCA52 TJSJ 122121 SMWSJU AMZ711-122200- /O.NEW.TJSJ.MA.W.0035.261112T2121Z-261112T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service San Juan PR 521 PM AST Thu Nov 12 2026 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... * Until 600 PM AST. * At 521 PM AST, a severe thunderstorm capable of producing waterspouts was located over open waters of Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N zone, moving northwest at 15 knots. HAZARD...Waterspouts and wind gusts to 34 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Mainly open waters of Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Seek safe shelter, mariners can expect gusty winds and increasing waves. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Report severe weather to the Coast Guard or nearest law enforcement agency. They will relay your report to the National Weather Service office. && LAT...LON 1878 6705 1873 6719 1899 6746 1912 6710 TIME...MOT...LOC 2121Z 145DEG 13KT 1886 6717 WATERSPOUT...POSSIBLE MAX HAIL SIZE...0.00 IN MAX WIND GUST...34 KTS $$ ICP