"LOS ANGELES — A moderately strong earthquake shook Southern California on Tuesday, swaying buildings and tossing food off grocery store shelves for about 20 seconds. There were no immediate reports of major injuries or structural damage.
The quake, estimated at 5.4 magnitude (reduced from an initial estimate of 5.8), was centered 35 east of downtown Los Angeles in Chino Hills, just south of Pomona in San Bernardino county. It was felt as far east as Las Vegas and as far south as San Diego."
