The Pacific Tsunami Warning Center has issued a threat forecast for Russia's Kamchatka Peninsula after two powerful earthquakes struck nearby on Sunday.

Officials in Hawaii issued a tsunami watch on Saturday evening as a series of earthquakes, including a 7.4 magnitude one, struck off the Russian coast, according to the U.S. Geological Survey.

After powerful earth tremors in the Pacific Ocean, residents of several settlements in Kamchatka had been advised to climb to ...