The Rialto Fire Department reported that a series of small earthquakes shook the northwestern portion of the city Thursday morning.

A 4.3-magnitude earthquake shook parts of Southern California, the U.S. Geological Survey reported. The about 3-mile deep quake hit about 4 miles west from Muscoy in San Bernardino County at 9:32 a.m. Thursday, July 31, according to the USGS.

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.