A brief tsunami watch for Hawaii was called off, but experts warn residents to remain prepared for future threats.

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.

After powerful earth tremors in the Pacific Ocean, residents of several settlements in Kamchatka had been advised to climb to elevations 30-40 metres high or move at least 2-3 kilometres away from the coast because of the tsunami threat,