High Surf Warning issued December 27 at 3:45AM HST until December 28 at 6:00AM HST by NWS Honolulu HI

…HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU
KAUAI OAHU MOLOKAI NORTH FACING SHORES OF MAUI AND WEST FACING
SHORES OF THE BIG ISLAND…

.Surf along exposed north and west facing shores will remain well
above warning levels today, then slowly ease tonight through the
weekend as an extra-large west-northwest to northwest (290 to 315
degrees) swell gradually eases.

* WHAT…Surf of 30 to 40 feet, lowering to 18 to 25 feet early
Saturday along north facing shores of Niihau, Kauai, Oahu,
Molokai, and Maui. Surf of 20 of 30 feet, lowering to 15 to 20
feet early Saturday along west facing shores of Niihau, Kauai,
Oahu, and Molokai. Surf of 10 to 14 feet, lowering to 8 to 12
feet early Saturday along exposed west facing shores of the Big
Island.

* WHERE…North and west facing shores of Niihau, Kauai, Oahu, and
Molokai, north facing shores of Maui, and west facing shores of
the Big Island.

* WHEN…Until 6 AM HST Saturday.

* IMPACTS…Very High…Expect ocean water surging and sweeping
across beaches, coastal benches, and lava flows creating the
potential for impacts to coastal properties and infrastructure,
including roadways. Powerful longshore and rip currents will be
present at most beaches. Large breaking waves and strong
currents may impact harbor entrances and channels causing
challenging boat handling.