The National Weather Service says a high surf advisory for the east and south facing shores of all islands is in effect from 6 a.m. Thursday until 6 a.m. Saturday.
Forecasters say two separate swells will bring advisory level surf. An east swell generated by Hurricane Marie entered Hawaiian waters Wednesday night and should gradually build surf to advisory levels along east facing shores on Thursday.
A moderate-sized swell also entered Hawaiian waters Wednesday night building surf to advisory levels along south facing shores on Thursday. The surf on both shores should remain elevated through Friday night.
Surf heights are expected to be 6-to-9-feet-tall on east and south shores on Thursday and Friday.