HONOLULU (HawaiiNewsNow)- The National Weather Service says a storm in the North Pacific has generated a large west-northwest swell that is on Thursday afternoon and will continue to through the evening.
FRIDAY MORNING UPDATE: The National Weather Service has downgraded a high-surf warning issued Thursday to a high-surf advisory until 6 a.m. Saturday.
The high surf warning is in effect for the north and west facing shores of Niihau, Kauai, Oahu, Molokai and the north facing shores of Maui.
The warning expires 6 a.m. Friday.
According to the warning, surf along north facing shores will be at heights of up to 20 to 25 feet through tonight. Along the islands' west facing shores, surf will build to 15 to 20 feet.