Hours after a powerful earthquake struck off Russia's Kamchatka Peninsula, the region's highest volcano began erupting. Geophysicists from the Russian Academy of Sciences reported a strong glow visible at the summit of the 4,750-metre Klyuchevskoy volcano in the Russian Far East.

A preliminary 4.4-magnitude earthquake struck Southern California Thursday morning, according to the U.S. Geological Survey.

A 4.3-magnitude earthquake struck the Inland Empire on Thursday morning, with its epicenter located north of Fontana. The quake, which occurred around 9:30 a.m., was followed by a 3.1-magnitude aftershock in the same area.