HONOLULU, Hawaii (HawaiiNewsNow) - Another series of warning level surf will affect the north and west shores of most of the islands, with one swell rising Thursday and a larger Friday for the north and west shores of Niihau, Kauai, Oahu and Molokai and the north shores of Maui.
An overlapping northerly swell will also bring waves for the north shores of the Big Island, where a high surf advisory has been posted.
Dangerously large waves of 25 to 35 feet will be possible along north-facing shores of the smaller islands. West shores could see waves as high as 20 to 25 feet.
The Big Island’s north-facing shores will see waves of 10 to 16 feet.
Surf is expected to decline to advisory levels on Friday, but another extra-large northwest swell is expected to arrive Friday night and peak on Saturday well above warning levels.
Surf is expected to remaining at warning levels during the weekend, with another extra-large northwest swell forecast to build on Monday.
Beachgoers should be on the alert for strong breaking waves and shore breaks, with ocean water sweeping across beaches. Stay off of wet rocks near the shoreline and follow instructions from ocean safety lifeguards.
Boaters should be aware of hazardous channel conditions in north and west facing harbors.