A magnitude 4 earthquake rattled Southern California before dawn Sunday morning — the strongest in a series of modest ...
A magnitude 4.0 earthquake rattled the Ontario area Sunday morning, jolting some residents awake. Measured at a depth of about 3.54 miles, the 3:51a.m. quake was centered southeast of Ontario, ...
A preliminary 4.0-magnitude earthquake struck near Ontario this morning, according to the U.S. Geological Survey.