High surf warning in effect

A high surf warning remains in effect until 6 p.m. Friday for north and west facing shores of Molokai and north facing shores of Maui, the National Weather Service said.

A storm in the north Pacific has generated a large northwest swell that was expected to continue to build Thursday night.

Surf heights are expected to hit 15 to 20 feet Thursday night, peaking early Friday and diminishing throughout the day.

Beach goers need to exercise caution due to large surf and sweeping waves; swimmers need to be aware of dangerous rip currents.

Boaters should be aware of increased numbers of surfers and body boarders using harbor channels to access surfing areas.

High surf warning in effect

The National Weather Service has posted a high surf warning for north and west facing shores of Molokai and north facing shores of Maui through 6 p.m. Tuesday.

A long period northwest swell will build overnight and peak early Tuesday in most areas, resulting in surf higher than warning levels along exposed north and west facing shores. Surf along north facing shores is expected to build to 20 to 30 feet and to 15 to 20 feet along west facing shores.

The surf is expected to diminish below warning levels late Tuesday.

High surf is expected to sweep across portions of beaches and create strong breaking waves. Longshore and rip currents will make for dangerous swimming conditions.

Only experienced swimmers should enter the water. Others should remain off beaches and adjacent beachfront areas.

Breaking waves may occasionally make navigating the harbor channel dangerous.