159 

WHMY50 PGUM 180904

SMWGUM

PMZ151-180930-

/O.NEW.PGUM.MA.W.0033.261018T0904Z-261018T0930Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

SPECIAL MARINE WARNING

NATIONAL WEATHER SERVICE TIYAN GU

703 PM CHST SUN OCT 18 2026



THE NATIONAL WEATHER SERVICE IN TIYAN GUAM HAS ISSUED A



* SPECIAL MARINE WARNING FOR...

  GUAM COASTAL WATERS...



* UNTIL 730 PM CHST.



* AT 703 PM CHST...A SHOWER CAPABLE OF PRODUCING WATERSPOUTS WAS

  LOCATED OVER EASTERN GUAM WATERS MOVING NORTH AT 30 KNOTS.



  HAZARD...WATERSPOUTS AND WIND GUSTS 34 KNOTS OR GREATER.



  SOURCE...RADAR.



  IMPACT...WATERSPOUTS CAN CREATE LOCALLY HAZARDOUS SEAS. SMALL



           CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND



           SUDDENLY HIGHER WAVES.



* THE SHOWER WILL REMAIN OVER MAINLY OPEN WATERS.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS

SEAS. SEEK SAFE HARBOR IMMEDIATELY.



&&



LAT...LON 1329 14519 1326 14510 1349 14495 1357 14515

TIME...MOT...LOC 0903Z 161DEG 28KT 1334 14511 



WATERSPOUT...POSSIBLE

HAIL...0.00IN

WIND...>34KTS



$$



CO