HONOLULU, Hawaii (HawaiiNewsNow) - A high surf advisory has been extended until 6 a.m. Monday as a long-period northwest swell slowly declines.
The National Weather Service office in Honolulu said the advisory now covers the north and west shores of Niihau and Kauai, and the north shores of Oahu, Molokai and Maui.
A high surf advisory was canceled for the west shores of the Big Island.
Waves are forecast to be in the 10-15 foot range overnight.
The swell will bring strong breaking waves and shore breaks, along with strong longshore and rip currents that will make swimming difficult and dangerous.
Another long-period northwest swell is expected late Wednesday or Thursday.