The National Weather Service in Honolulu has extended a high surf warning for north- and west-facing shores of Niihau, Kauai, Oahu and Molokai and for north-facing shores of Maui until 6 p.m. Wednesday.
Surf along north and west-facing shores of Niihau and Kauai and north-facing shores of Oahu, Molokai and Maui will be 20 to 25 feet.
Surf along west-facing shores of Oahu and Molokai will be 15 to 20 feet.
Expect ocean water occasionally sweeping across portions of beaches, with very strong breaking waves and strong longshore and rip currents. Breaking waves may occasionally impact harbors making navigating the harbor channel dangerous. Large breaking surf, significant shorebreak, and dangerous currents make entering the water very hazardous.