The Pacific Tsunami Warning Center’s latest tsunami warning update for Hawaii says that first waves to hit Kauai measured at amplitude 3 to 4 feet in Hanalei, and 0.7 to 0.8 feet Nawiliwili. Tsunami amplitude is “measured relative to normal sea level,” according to the 8 p.m. update.

Japanese officials also downgraded tsunami warnings in the southern half of the country as 1.9 million residents faced evacuation orders along its Pacific coast.

Hawaii Governor Josh Green has urged residents to evacuate all coastal areas immediately, warning that tsunami waves will "wrap around the islands."