489 WHCA52 TJSJ 270503 SMWSJU AMZ711-712-741-742-270545- /O.NEW.TJSJ.MA.W.0001.260327T0503Z-260327T0545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service San Juan PR 103 AM AST Fri Mar 27 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... 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 AM AST. * At 102 AM AST, a severe thunderstorm capable of producing waterspouts was located about 8 NM NW of Aguada and Aguadilla. This thunderstorm was 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. 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 1872 6740 1864 6703 1851 6710 1851 6714 1848 6717 1842 6715 1838 6722 1837 6727 1834 6726 1842 6750 TIME...MOT...LOC 0502Z 191DEG 8KT 1851 6727 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...>34KTS $$ CVB  069 FZCA72 TJSJ 270547 MWSSJU Marine Weather Statement National Weather Service San Juan PR 147 AM AST Fri Mar 27 2026 AMZ711-712-270815- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- Coastal Waters of Northern Puerto Rico out 10 NM- 147 AM AST Fri Mar 27 2026 ...STRONG THUNDERSTORMS OVER THE OFFSHORE ATLANTIC WATERS... The areas affected include... Atlantic Waters of Puerto Rico AND USVI from 10 NM to 19.5N... Coastal Waters of Northern Puerto Rico out 10 NM... At 146 AM AST, Doppler radar indicated a line of strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located over the Atlantic waters. The thunderstorms were moving southeastward at 5 to 10 knots. Additional thunderstorms are expected to develop across these waters through the night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. Intense lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. $$