Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data from the U.S. Geological Survey.

Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data from the U.S. Geological Survey. One quake hit Rialto, California, in the ...

Several small earthquakes hit the Inland Empire early Wednesday morning, but there were no reports of damage. Ontario saw two quakes — measuring 3.5 and 3.2 magnitude — just after 1 a.m. That was ...

Three earthquakes rattled San Bernardino County overnight. Two of the quakes struck in Ontario. The three earthquakes ...