A larger-than-expected north-northeast swell prompted weather officials to issue a high surf warning for north and east shores of Oahu and Kauai this morning.

Surf up to 10 to 15 feet is expected along affected shore. The warning is in effect through 6 p.m. today.

A modified high surf advisory for the north shores of Oahu, Maui, Hawaii island, Kauai County and Molokai, and the east shore of Maui are covered in the advisory, effective through 6 p.m. today. Forecasters expect surf up to 10 to 15 feet along north-facing shores, and 6 to 10 feet along east-facing shores of affected islands.

“Beachgoers, swimmers and surfers should heed all advice given by ocean safety officials and exercise caution,” the National Weather Service said in an advisory. “Large breaking surf, significant shorebreak and dangerous currents make entering the water very hazardous.”