A powerful earthquake and a rare volcanic eruption shook Russia's Kamchatka Peninsula and the Kuril Islands, prompting tsunami warnings and raising concerns among emergency officials and seismologists.

Tsunami alerts were issued for Alaska and Hawaii on Tuesday after a major, 8.8 magnitude earthquake struck off the coast of Russia, according to officials.

A volcano on Russia’s far eastern Kamchatka Peninsula erupted overnight into Sunday for what scientists said is the first time in hundreds of years, days after a massive 8.8-magnitude earthquake. The Krasheninnikov volcano sent ash 6 kilometers (3.