The U.S. Geological Survey said Thursday a powerful magnitude 7.8 earthquake struck Russia’s Petropavlovsk-Kamchatsky region at a depth of 10 kilometers (6.2 miles).
USGS said a series of aftershocks followed, measuring up to 5.8.
Russia's Emergencies Ministry said the quake had a magnitude of 7.2.
Governor Vladimir Solodov said all emergency services had been placed in a state of high readiness, but no damage had been reported. A tsunami warning was issued for the eastern shore of the peninsula, jutting far out into the Bering Sea and Pacific Ocean.
He said tsunami waves ranging from 0.5 to 1.5 meters (1.6 to 4.9 feet) were expected at various points along the coast and warned people to stay away from coastal areas.
