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A surfer takes off on a wave at Sunset Beach Friday morning. A high surf advisory was in effect for north and west shores.
A high surf advisory for the north shores of most islands has been extended through Saturday morning.
A northwest swell promises 12- to 18-foot surf along the north- and west-facing shores of Kauai and Niihau, and the north-facing shores of Oahu, Maui and Molokai, according to forecasters at the National Weather Service.
The advisory is in effect through 6 a.m. Saturday.
Beachgoers are advised to heed all advice given by ocean safety officials.
