NEW : Few reports of damage or injury from ` ` moderate '' earthquake . NEW : Experts , some say , is a warning to be prepared . 11:42 a.m. PT quake 's epicenter was about 100 miles east of Los Angeles . Two nuclear plants are in the vicinity of the quake 's epicenter near Chino Hills , according to the Nuclear Regulatory Commission . More than 30 earthquakes were reported , largest was 3.6 .
NEW : Few reports of damage or injury from ` ` moderate '' earthquake . NEW : Experts , some say , is a warning to be prepared . 11:42 a.m. PT quake 's epicenter was about 100 miles east of Los Angeles . More than 30 earthquakes were reported , largest was 3.6 .