An earthquake with a magnitude of 7.8 occurred 161 km east of Raoul Island in the Kermadec Islands, with an epicenter 20 km deep. Tsunami warnings were issued for the Kermadec Islands, New Zealand, and Tonga. The Pacific Tsunami Warning Center monitors for tsunamis using the Deep-ocean Assessment and Reporting of Tsunamis system. Raoul Island is a volcanic island territory of New Zealand located about 1000 km northeast of New Zealand.