589
WHCA52 TJSJ 180908
SMWSJU
AMZ711-716-726-181000-
/O.NEW.TJSJ.MA.W.0061.251018T0908Z-251018T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service San Juan PR
508 AM AST Sat Oct 18 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 east of Puerto Rico, around Vieques, and around and
  just north of Culebra and Saint John...
  Coastal Waters from Cabo San Juan to the waters between Anegada
  Island and Virgin Gorda and North 10 NM...

* Until 600 AM AST.

* At 507 AM AST, a severe thunderstorm capable of producing
  waterspouts was located northeast of St. Thomas and northwest of
  St. John, moving northeast at 20 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.

Seek safe shelter, mariners can expect gusty winds and increasing
waves.

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 1811 6478 1834 6504 1835 6499 1833 6497
      1834 6493 1830 6488 1833 6485 1835 6487
      1837 6490 1836 6495 1837 6495 1836 6505
      1858 6529 1908 6482 1879 6432
TIME...MOT...LOC 0907Z 226DEG 31KT 1871 6471

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

$$

CVB