983 

WHCA52 TJSJ 201901

SMWSJU

AMZ711-712-202000-

/O.NEW.TJSJ.MA.W.0026.261020T1901Z-261020T2000Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service San Juan PR

301 PM AST Tue Oct 20 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 Northern Puerto Rico out 10 NM...



* Until 400 PM AST.



* At 301 PM AST, A severe thunderstorm capable of producing

  waterspouts is now reaching the Atlantic Waters of Puerto Rico from

  10 NM to 19.5N and Coastal Waters of Northern Puerto Rico out 10 NM

  zones, moving north-northeast at 25 knots.



  HAZARD...Waterspouts.



  SOURCE...Radar indicated.



  IMPACT...Waterspouts can easily overturn boats and create locally

           hazardous seas.



* Locations impacted include...

  Mainly open waters of Atlantic Waters of Puerto Rico and USVI from

  10 NM to 19.5N and Coastal Waters of Northern Puerto Rico out 10

  NM.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Move to safe harbor until hazardous weather passes.



Thunderstorms can produce sudden waterspouts. Waterspouts can easily

overturn boats and create locally hazardous seas. Seek safe harbor

immediately.



&&



LAT...LON 1848 6674 1878 6673 1875 6592 1845 6608

      1846 6611 1844 6608 1843 6610 1848 6614

      1847 6614 1845 6616 1847 6618 1846 6622

      1847 6620 1849 6638 1847 6636 1849 6640

      1847 6646 1849 6662

TIME...MOT...LOC 1900Z 214DEG 24KT 1854 6636



WATERSPOUT...POSSIBLE

MAX HAIL SIZE...0.00 IN

MAX WIND GUST...<34 KTS



$$



MMC






342 

FZUS76 KLOX 201952

MWSLOX



Marine Weather Statement

National Weather Service Los Angeles/Oxnard CA

1252 PM PDT Tue Oct 20 2026



PZZ645-650-655-670-673-676-212000-

Point Piedras Blancas to Point Sal westward out to 10 NM-

East Santa Barbara Channel from Pt. Conception to Pt. Mugu CA

including Santa Cruz Island-

Inner waters from Point Mugu to San Mateo Pt. CA including Santa

Catalina and Anacapa Islands-

Point Piedras Blancas to Point Sal from 10 to 60 NM-

Waters from Pt. Sal to Santa Cruz Island CA and westward 60 nm

including San Miguel and Santa Rosa Islands-

Outer waters from Santa Cruz Island to San Clemente Island to

60 NM offshore including San Nicolas and Santa Barbara Islands-

1252 PM PDT Tue Oct 20 2026



...CHANCE OF THUNDERSTORMS ACROSS THE COASTAL WATERS LATE TONIGHT

THROUGH THURSDAY AFTERNOON...



A moderate storm system will impact our coastal waters tonight through

Thursday, bringing a chance of thunderstorms to the area. Thunderstorm

activity is likely to be most hazardous for the waters south and 

east of Point Conception with peak timing expected Wednesday 

afternoon through Thursday morning.



Any thunderstorm that forms will be capable of producing local 

gusts up to gale force, rough seas, dangerous lightning, heavy 

rainfall with reduced visibility, and waterspouts.



$$



Ciliberti