Dangerously large surf is slowly declining into north- and west-facing shores of the Hawaiian islands, the National Weather Service said.
A high surf warning that was posted for the north and west shores of Kauai and Oahu has been downgraded to a high surf advisory until 6 a.m. Friday.
A high surf advisory also remains in effect for the north and west shores of Molokai, the north shores of Maui and the west shores of the Big Island, also until 6 a.m. Friday.
Surf was expected in the 16 to 22 foot range overnight for north shores, with 12 to 18 foot waves for the west shores of the smaller islands. Surf of 6 to 8 feet is forecast for the west shore of the Big Island.
The National Weather Service also issued a high surf advisory for the east-facing shores of Kauai, Oahu, Molokai, Maui and the Big Island for an increasing rough and choppy swell generated by increasing trade winds.
Expect dangerous ocean conditions, including strong breaking waves and longshore and rip currents.