The National Weather Service in Honolulu has extended the High Surf Advisory for South facing shores of all islands until 6pm Hawaii Standard Time on Saturday.
Two large Southern hemisphere swells will produce surf from 6 to 8 feet along exposed South facing shores over the next several days. Large breaking waves will produce dangerous rip currents and local beach erosion.
The largest waves are expected early this afternoon.
Strengthening high pressure North of Hawaii will produce locally strong trade winds and rough seas across the normally windy waters from the Kaiwi channel to South of the Big Island through at least Saturday. These conditions may expand to additional waters over the next couple of days.
The NWS issued a Small Craft Advisory for Maalea Bay, Pailolo Channel, Alenuihana Channel, and Big Land and Leeward and Southeast waters until 6pm Saturday.
In addition, the NWS has issued a Wind Advisory for Haleakala and the Big Island summits.
A deep layered trade wind flow will produce strong winds across Haleakala National Park above 6000 feet, and summits of Mauna Loa and Mauna Kea above 8000 feet. Expect East winds to 30mph with gusts up to 40mph.
The wind advisory will be in effect until 6am Friday.