548
WHMY40 PGUM 121818
CFWGUM
URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
418 AM CHST THU AUG 13 2026
GUZ001-MPZ001>003-130900-
/O.CON.PGUM.SU.Y.0049.000000T0000Z-260813T1800Z/
/O.CON.PGUM.RP.S.0019.000000T0000Z-260813T1800Z/
GUAM-ROTA-TINIAN-SAIPAN-
418 AM CHST THU AUG 13 2026
..HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 AM CHST FRIDAY
..HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TONIGHT
* WHAT...LARGE BREAKING WAVES OF 8 TO 11 FEET AND DANGEROUS RIP
CURRENTS EXPECTED.
* WHERE...WEST FACING REEFS OF THE MARIANAS.
* WHEN...UNTIL 4 AM CHST FRIDAY.
* IMPACTS...DANGEROUS SWIMMING AND SURFING CONDITIONS AND
LOCALIZED BEACH EROSION. RIP CURRENTS CAN SWEEP EVEN THE BEST
SWIMMERS AWAY FROM SHORE INTO DEEPER WATER.
* ADDITIONAL DETAILS...A STRONG MONSOON PATTERN CONTINUES TO
PRODUCE HAZARDOUS SURF AND A HIGH RISK OF RIP CURRENTS ALONG
WEST-FACING REEFS THROUGH LATE TONIGHT AND EARLY FRIDAY MORNING. THE
HIGH SURF ADVISORY AND HIGH RIP CURRENT RISK MAY BE EXTENDED
AGAIN, POTENTIALLY INCREASING BACK UP TO HAZARDOUS LEVELS ALONG
NORTH-FACING REEFS, AS THE MONSOON PATTERN AND ASSOCIATED WEST
TO NORTHWEST SWELLS CONTINUE INTO NEXT WEEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RIP CURRENTS WILL BE LIFE THREATENING. INEXPERIENCED SWIMMERS
SHOULD REMAIN OUT OF THE WATER DUE TO DANGEROUS SURF CONDITIONS.
RIP CURRENTS WILL BE LIFE THREATENING. IF CAUGHT IN A RIP
CURRENT, RELAX AND FLOAT. DON'T SWIM AGAINST THE CURRENT. IF
ABLE, SWIM IN A DIRECTION FOLLOWING THE SHORELINE. IF UNABLE TO
ESCAPE, FACE THE SHORE AND CALL OR WAVE FOR HELP.
CRUZ
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