Five powerful quakes, including one with a magnitude of 7.4, struck in the sea off Russia's Kamchatka Peninsula.

Residents of Russia's Kamchatka Peninsula were warned of potential tsunami waves as a series of earthquakes, including a 7.4 magnitude one, struck off the Russian coast, according to the U.S. Geological Survey. A Tsunami threat was issued off the Kamchatka coast, according to the U.S. Tsunami Warning System.

A powerful 7.4 magnitude earthquake hit Russia's Kamchatka Peninsula on Sunday, July 20, at a depth of 12 miles. Video footage shows the interior of a house shaking violently as the earthquake struck.