The waves between 3 and 7 feet are expected to rope the islands beginning about 10:28 p.m. Saturday (4:28 a.m. Sunday ET), the Pacific Tsunami Warning Center said.
"Basically this tsunami is pointed right at us," said Gerard Fryer, senior geophysicist at the center.
The impact could last for hours.
"It's not just one wave, it's a succession of waves," Fryer said. "We are recommending coastal evacuation."
ChiboyChuks opinion: Please, I advice all Hawaii residents to evacuate with immediate effect. #God's Guidance