201
WHCA52 TJSJ 122159
SMWSJU
AMZ741-122230-
/O.NEW.TJSJ.MA.W.0020.250812T2159Z-250812T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service San Juan PR
559 PM AST Tue Aug 12 2025

The National Weather Service in San Juan has issued a

* Special Marine Warning for...
  Mona Passage Southward to 17N...

* Until 630 PM AST.

* At 559 PM AST, a severe thunderstorm capable of producing
  waterspouts was located southeast of Mona Island, 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.

&&

LAT...LON 1809 6797 1809 6795 1806 6792 1804 6785
      1810 6781 1810 6748 1784 6741 1776 6797
TIME...MOT...LOC 2159Z 084DEG 13KT 1797 6766

WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...>34KTS

$$

CVB