HONOLULU, Hawaii (HawaiiNewsNow) - A new, larger northwest swell is expected to move down the island chain Thursday into Thursday night, with waves exceeding warning levels by sunset on New Year’s Eve.
The National Weather Service has expanded a high surf warning, which now covers the north and west shores of Niihau, Kauai, Oahu and Molokai and the north-facing shores of Maui.
The warning is in effect until 6 p.m. Friday.
Forecasters said surf is expected to rise to 30 to 40 feet along north facing shores by Thursday afternoon into Thursday night, and then lower to 20 to 30 feet Friday.
West shore surf is expected to rise to 18 to 25 feet Thursday night, lowering to 15 to 20 feet Friday.
The swell is forecast to peak Thursday night, and then steadily decline Friday into Saturday.
Large breaking surf, a significant shorebreak and dangerous currents will make entering the water very hazardous. Anyone entering the water faces significant injury or death.
Beach goers should be on the alert for ocean water occasionally sweeping across portions of beaches and sdtrong breaking waves.
Breaking surf may also make it hazardous to navigate harbor channels along the affected shorelines.
This story may be updated.