A magnitude 5.1 earthquake occurred about 54 kilometers west of Adak, Alaska, on Tuesday morning, according to the U.S. Geological Survey. It comes just days after Russia's Far East was struck by a massive 68.8 magnitude earthquake.

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.

One of the strongest earthquakes ever recorded struck Russia's Far East early Wednesday, sending tsunami waves into Japan and Hawaii and across the Pacific.