885
WHMY40 PGUM 120606
CFWGUM
URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
406 PM CHST THU MAR 12 2026
GUZ001-MPZ001>003-122000-
/O.NEW.PGUM.SU.Y.0026.260312T1800Z-260316T0600Z/
/O.NEW.PGUM.RP.S.0009.260312T1800Z-260316T0600Z/
GUAM-ROTA-TINIAN-SAIPAN-
406 PM CHST THU MAR 12 2026
...HIGH SURF ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 PM CHST
MONDAY...
...HIGH RIP CURRENT RISK IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...
* WHAT...LARGE BREAKING WAVES OF 7 TO 9 FEET, BUILDING TO 9 TO 11
FEET FRIDAY, AND DANGEROUS RIP CURRENTS EXPECTED.
* WHERE...FOR THE HIGH SURF ADVISORY, NORTH FACING REEFS OF THE
MARIANAS. FOR THE HIGH RIP CURRENT RISK, NORTH AND EAST FACING
REEFS.
* WHEN...FROM 4 AM FRIDAY TO 4 PM CHST MONDAY.
* 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 LARGE NORTHEAST SWELL COMBINED WITH A NORTH
SECONDARY SWELL PRODUCED BY A STRONG MID-LATITUDE FRONTAL SYSTEM
AND A NEARBY SHEAR LINE WILL PRODUCE HAZARDOUS SURF ALONG NORTH
FACING REEFS AND A HIGH RISK OF RIP CURRENTS ALONG NORTH AND EAST
FACING REEFS. SURF WILL INITIALLY BE BETWEEN 7 AND 9 FEET, BUILDING
TO BETWEEN 9 AND 11 FEET FRIDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
RIP CURRENTS WILL BE LIFE THREATENING. INEXPERIENCED SWIMMERS SHOULD
REMAIN OUT OF THE WATER DUE TO DANGEROUS SURF CONDITIONS. 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.
KLEESCHULTE
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