339
WHGM70 PGUM 110138
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1138 AM CHST SAT APR 11 2026
PMZ151>154-110800-
/O.NEW.PGUM.TY.A.4004.260411T0138Z-000000T0000Z/
/O.EXT.PGUM.SC.Y.0036.000000T0000Z-260412T2000Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
1138 AM CHST SAT APR 11 2026
..TYPHOON WATCH IN EFFECT
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM CHST MONDAY
* WHAT...TYPHOON WATCH. FOR THE SMALL CRAFT ADVISORY, NORTHEAST WINDS
20 TO 30 KT AND SEAS 10 TO 14 FEET.
* WHERE...MARIANAS COASTAL WATERS.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 6 AM CHST MONDAY. FOR
THE TYPHOON WATCH, FROM 6 AM CHST MONDAY.
* IMPACTS...TYPHOON CONDITIONS, INLCUDING WINDS OF 64 KNOTS OR MORE,
ARE POSSIBLE WITHIN THE NEXT 48 HOURS. FOR THE SMALL CRAFT
ADVISORY, CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...LATEST GUIDANCE INDICATES TROPICAL STORM FORCE
WINDS OF 34 TO 63 KNOTS ARE POSSIBLE AS EARLY AS MONDAY MORNING.
TROPICAL STORM SINLAKU (04W) CONTINUES TO STRENGTHEN AS IT MEANDERS
NEAR CHUUK, FOLLOWED BY A TRACK TOWARDS THE MARIANAS OVER THE NEXT
SEVERAL DAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER VESSELS,
SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
MONTVILA
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