Southern California, quake and Ontario
A magnitude 3.7 earthquake struck in Southern California early Monday, according to the United States Geological Survey, marking the second temblor to hit the region in less than five days.
An earthquake with a preliminary magnitude of 3.2 rattled Southern California on Saturday, shaking homes and businesses ...
A magnitude-3.1 earthquake centered about two miles southeast of Ontario struck at 12:56 p.m. on Tuesday, Oct. 1, the US ...
Faced with the prospect of an extensive, and expensive, seismic safety retrofit for its 1960s-era downtown headquarters, L.A.