147
WHHW40 PHFO 231329
CFWHFO
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE HONOLULU HI
329 AM HST THU OCT 23 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING FOR NORTH AND WEST FACING SHORES OF KAUAI NIIHAU OAHU
MOLOKAI AND NORTH FACING SHORES OF MAUI...
.TODAY IS A TALE OF TWO NORTH-NORTHWEST SWELLS, A MODERATE 11 TO
13 SEC PERIOD AND A LONGER 15 TO 17 SEC PERIOD, MOVING THROUGH THE
HAWAII REGION TODAY. THE LONGER PERIOD SWELL WILL CONTINUE TO
BUILD TODAY AND SURF HEIGHTS ALONG NORTH AND WEST FACING SHORES
ARE FORECAST TO STRENGTHEN INTO MARGINAL HIGH SURF ADVISORY (HSA)
LEVELS THROUGH THE DAY. THEN FALL BELOW HSA LEVELS LATER TONIGHT.
HIZ001-003-006-007-017-029-037-039-040-045-047-240230-
/O.CON.PHFO.SU.Y.0030.000000T0000Z-251024T0400Z/
NIIHAU-KAUAI SOUTHWEST-WAIANAE COAST-OAHU NORTH SHORE-
MAUI WINDWARD WEST-KAUAI NORTH-MOLOKAI WINDWARD-MOLOKAI NORTH-
MOLOKAI WEST-MAUI CENTRAL VALLEY NORTH-WINDWARD HALEAKALA-
329 AM HST THU OCT 23 2025
...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS
EVENING...
* WHAT...SURF BUILDING TO 10 TO 16 FEET ALONG NORTH FACING SHORES
OF KAUAI, NIIHAU, OAHU, MOLOKAI AND MAUI. SURF BUILDING TO 8 TO
12 FEET ALONG WEST FACING SHORES OF KAUAI, NIIHAU, OAHU AND
MOLOKAI.
* WHERE...NORTH AND WEST FACING SHORES OF KAUAI, NIIHAU, OAHU,
MOLOKAI AND NORTH FACING SHORES OF MAUI.
* WHEN...UNTIL 6 PM HST THIS EVENING.
* IMPACTS...MODERATE. STRONG BREAKING WAVES AND STRONG CURRENTS
WILL MAKE SWIMMING DANGEROUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEED ALL ADVICE FROM OCEAN SAFETY OFFICIALS. WHEN IN DOUBT, DON'T
GO OUT.
RCB
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