High surf advisories remain posted for south, west, north shores.

HONOLULU (HawaiiNewsNow) - High surf advisories are posted for most shorelines as a combination of northwest and south swells bring elevated waves, especially for south-facing shorelines.

South shores of all islands are under an advisory until 6 p.m. Thursday, with waves expected to peak at 10 to 14 feet.

North and west shores of Niihau, Kauai, Oahu, Molokai and Maui are under an advisory until 6 a.m. Thursday.

Waves along north shores are forecast to rise to 12 to 16 feet. West shores will see a combination of northwest and south swell wraps and will rise to 8 to 12 feet.

Beachgoers, swimmers and surfers -- and especially visitors to the islands who are unfamiliar with ocean conditions -- should heed all advice from ocean safety officials and use caution.

In addition, Honolulu ocean safety officials strongly encourage inexperienced surfers to stay onshore, and for beachgoers to keep a close watch on children.

Call 911 immediately if you see someone in trouble in the ocean.