A high-surf warning remains in effect through Tuesday afternoon for those shores, the National Weather Service said.

Wave faces on north shores are expected to roll in at 25 feet to 35 feet with larger sets with 45-foot faces offshore, the weather service forecast. West shores will initially see wave faces of 15 feet to 25 feet but they are expected to rise to 30 feet by tomorrow.

The combination of high surf and high tide could produce coastal flooding, damage homes along beaches and close roads, said John Cummings, Civil Defense spokesman.

A 2.3-foot high tide is expected at 2:40 a.m. tomorrow.

Civil defense volunteers will patrol affected shorelines overnight to report problems.

Beaches on north and west shores should be avoided until the surf calms down. People should stay well away from the water, peninsulas and areas overlooking the affected areas because large waves can suddenly sweep them away.

Also, motorists should be on the lookout for debris on roads.

"We have been very lucky this season as we have had very few surf-related problems on O'ahu even though there have been quite a few high-surf warnings issued by the National Weather Service since December," said Kenneth Gilbert, disaster preparedness officer for O'ahu Civil Defense.