Tsunami waves arrived on the eastern coast of Japan following a powerful 8.8. magnitude earthquake off the eastern coast of Russia that also sparked fears of a tsunami in the U.S.

Authorities warned the risk from the 8.8 magnitude quake could last for hours, and millions of people potentially in the path of the waves were initially told to move away from the shore or seek high ground.

A tsunami advisory was also issued for parts of Alaska and the entire West Coast after a powerful earthquake off Russia's Kamchatka Peninsula.