A massive magnitude 8.7 earthquake struck off the coast of Russia Tuesday, sparking tsunami warnings in Alaska and Hawaii and alerts for other areas of the West Coast. The earthquake occurred about 85 miles off the east coast of Russia's Kamchatka Peninsula with a depth of nearly 12 miles, according to the U.S. Geological Survey.

One of the world’s strongest earthquakes struck Russia’s Far East early Wednesday, causing a tsunami in the northern Pacific region and setting off warnings for Alaska, Hawaii and south toward New Zealand.