S everal earthquakes, including a 7.4 magnitude one, struck off the Russian coast on Sunday, according to the U.S. Geological Survey, prompting brief warnings of potential tsunami waves on the nearby peninsula and farther across the Pacific in Hawaii.

A magnitude 6.6 earthquake struck near the coast of the Kamchatka region in the far east of Russia on Sunday, the German Research Centre for Geosciences (GFZ) said.

Aftershocks are expected following a magnitude 5.8 earthquake that struck off the coast of a Cagayan town on Sunday afternoon, according to the Philippine Institute of Volcanology and Seismology (Phivolcs).