Occurring at 9:09 p.m., the US Geological Survey reported the quake was centered 4.6 miles below the surface and one mile east of La Habra. It was felt across the area throughout the entire Los Angeles area.
Damage from the temblor has been relatively minor.
Fullerton reported several water main breaks and broken windows. In Brea a car was overturned and several people injured when a rock from a rockslide struck a vehicle.
Store shelves across the area had merchandise knocked from shelves. Homeowners reported broken chimneys and cracked walls.
At Disneyland in Anaheim, rides were shut down so inspections could be made to ensure they were not damaged.
Southern California Edison reported at least 2,000 customers were without power as a result of the quake.
The quake was preceded by two foreshocks about one hour before the main temblor, the largest of which was a magnitude 3.6. The USGS said there were more than 20 aftershocks within an hour.
On their website, the USGS wrote, “This sequence could be associated with the Puente Hills thrust (PHT). The PHT is a blind thrust fault that extends from this region to the north and west towards the City of Los Angeles. It caused the M5.9 1987 Oct. 1 Whittier Narrows earthquake. Previously, the M5.4 2008 Chino Hills earthquake occurred in this region. It caused somewhat stronger shaking in Orange County and across the Los Angeles Basin.”