The two earthquakes, which occurred at magnitudes of 3.5 and 3.4, were separated by six hours and centered just miles outside of Fontana, according to the USGS.

An earthquake with a preliminary magnitude of 3.4 struck the Inland Empire around 8:17 p.m., the second time an earthquake hit the region on Saturday. According to the United States Geological Survey, the quake hit about 3.7 miles northwest of Fontana.

An earthquake with a preliminary magnitude of 3.5 struck the Inland Empire on Saturday, which was felt by residents across a large swath of the region. The quake, reported at 2:17 p.m. according to the United States Geological Survey,