A magnitude 4.1 earthquake rattled Southern California early Sunday morning.
The quake struck 3 miles southeast of Ontario at 3:51 am.
Residents in Los Angeles, Riverside and Orange County felt shaking.
No reports of damage or injury.
The latest temblor comes amid a record-breaking year for 4.0+ magnitude quakes in California igniting fears of the “big one.”
The “Big One” refers to a large earthquake along the San Andreas fault. Seismologists say California is overdue for a large seismic event.