378
WHMY40 PGUM 230607
CFWGUM
URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
407 PM CHST SUN AUG 23 2026
GUZ001-MPZ001>003-232015-
/O.EXT.PGUM.SU.Y.0054.000000T0000Z-260824T0600Z/
/O.EXT.PGUM.RP.S.0020.000000T0000Z-260824T0600Z/
GUAM-ROTA-TINIAN-SAIPAN-
407 PM CHST SUN AUG 23 2026
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM CHST MONDAY NOW
ALONG WEST-FACING REEFS...
...HIGH RIP CURRENT RISK REMAINS THROUGH MONDAY AFTERNOON NOW ALONG
WEST-FACING REEFS...
* WHAT...FOR THE HIGH SURF ADVISORY, LARGE BREAKING WAVES OF 8 TO 10
FEET IN THE SURF ZONE. FOR THE HIGH RIP CURRENT RISK, DANGEROUS
RIP CURRENTS.
* WHERE...ALONG WEST-FACING REEFS.
* WHEN...UNTIL 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 COMBINATION OF THE REMNANT MONSOON SURGE AND
TROPICAL DEPRESSION 19W, WELL NORTHWEST OF YAP ISLAND, ARE
PRODUCING A LONG-PERIOD SOUTHWEST SWELL OF 7 TO 8 FT CAPABLE OF
HIGH SURF AND DANGEROUS RIP CURRENTS ALONG WEST-FACING REEFS.
CONDITIONS MAY BEGIN TO SUBSIDE MONDAY NIGHT, SO CONDITIONS WILL
CONTINUE TO BE MONITORED.
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.
MESA
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