A powerful 7.4 earthquake has struck off the coast of Russia, with the tremor felt in Alaska, Japan, and Hawaii, prompting tsunami warnings to be issued in the region

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,

A series of powerful earthquakes struck off the coast of Russia''s Kamchatka Peninsula on Sunday, with the strongest reaching magnitude 7.6, according to the Kamchatka branch of the Unified Geophysical Service of the Russian Academy of Sciences.