WHCA52 TJSJ 191850

SMWSJU

AMZ741-191945-

/O.NEW.TJSJ.MA.W.0020.260819T1850Z-260819T1945Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service San Juan PR

250 PM AST Wed Aug 19 2026



The National Weather Service in San Juan has issued a



* Special Marine Warning for...

  Mona Passage Southward to 17N...



* Until 345 PM AST.



* At 249 PM AST, a severe thunderstorm capable of producing

  waterspouts was located over the Mona Passage, moving west at 10

  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.



* The severe thunderstorm will remain over mainly open waters.



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 1850 6800 1842 6752 1808 6752 1808 6785

      1811 6784 1812 6786 1811 6789 1812 6791

      1812 6793 1808 6795 1808 6800

TIME...MOT...LOC 1849Z 110DEG 30KT 1830 6759



WATERSPOUT...POSSIBLE

HAIL...0.00IN

WIND...>34KTS



$$



ICP