A powerful 8.8 magnitude undersea earthquake has triggered widespread tsunami alerts across the Pacific Rim, including parts of the United States, Russia, and Japan. Coastal residents are being urged to remain vigilant and follow emergency protocols,

Warnings have been issued across the Pacific after a fierce 8.8-magnitude earthquake struck overnight. A tsunami hit Russia's Kuril Islands and the Japanese island of Hokkaido earlier today (July 30). Hawaii, Alaska and California have been issued warnings for potential tsunami waves.