High Surf Warning issued December 23 at 3:48AM HST until December 23 at 6:00PM HST by NWS Honolulu HI

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

.Warning-level surf will continue through much of today along exposed
north and west facing shores as a significant northwest (310-320
degrees) swell continues to impact the area. Heights will lower to
advisory levels Tuesday, then drop below Tuesday night through
Wednesday as the swell moves out.

* WHAT…Surf of 20 to 30 feet, lowering to 20 to 25 feet this
afternoon along north facing shores of Niihau, Kauai, Oahu,
Molokai and Maui. Surf of 18 to 24 feet, lowering to 15 to 20
feet this afternoon along west facing shores of Niihau, Kauai,
Oahu, and Molokai.

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

* WHEN…Until 6 PM HST this evening.

* IMPACTS…High. Expect very strong breaking waves and powerful
currents. Waves breaking in channel entrances may make
navigating the channels dangerous.