786
WHGM70 PGUM 181801
MWWGUM
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
401 AM CHST SUN APR 19 2026
PMZ151>154-190700-
/O.CON.PGUM.SC.Y.0039.000000T0000Z-260419T0700Z/
GUAM COASTAL WATERS-ROTA COASTAL WATERS-TINIAN COASTAL WATERS-
SAIPAN COASTAL WATERS-
401 AM CHST SUN APR 19 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CHST THIS
AFTERNOON...
* WHAT...SEAS 9 TO 12 FEET.
* WHERE...GUAM, ROTA, TINIAN, AND SAIPAN COASTAL WATERS.
* WHEN...UNTIL 5 PM CHST TODAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
* ADDITIONAL DETAILS...ELEVATED, CHOPPY SEAS HAZARDOUS TO SMALL
CRAFT CONTINUE IN THE WAKE OF TROPICAL STORM SINLAKU. LATEST
BUOY AND ALTIMETRY DATA INDICATE COMBINED SEAS OF 9 TO 12 FEET.
SEAS WILL BE SLOW TO SUBSIDE OVER THE NEXT FEW DAYS, AND THE
SMALL CRAFT ADVISORY HAS BEEN EXTENDED THROUGH THIS AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID BOATING IN HAZARDOUS CONDITIONS.
WILLIAMS
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