A High Surf Advisory is now in effect until 6 p.m. Monday for the north and west shores of Niihau, Kauai, Oahu and Molokai and the north shores of Maui as high surf slowly declines.
The National Weather Service said the advisory replaces the High Surf Warning that had been in effect for much of the weekend for those shores.
Forecasters said waves of 12 to 17 feet are possible Monday, declining to 10 to 14 feet by the evening. West shores will have 8- to 12-foot waves Sunday afternoon, falling to 7 to 10 feet Monday.
The waves have made the search difficult and dangerous for rescue crews looking for 12 Marines who went missing after the two helicopters they were riding collided off Oahu's North Shore Thursday night.
Despite the big waves, the Quiksilver in Memory of Eddie Aikau big wave competition at Waimea Bay was not held. The holding period for the surf competition runs through February 29.
The last time the big wave invitational was held was in 2009. In its three-decade history, it's only been held eight times.
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