[Ed. – Could be major. “Inactive” faults haven’t shown activity for over 10,000 years. The northern edge of the Santa Monica Mountains has the Malibu Coast Fault, which scientists predicted, about 25 years ago, could become active again. Closer to Westwood is the Santa Monica Fault, also “inactive” in modern times. Watch this space…]
The magnitude 4.4 earthquake that struck near Westwood is the most significant shake in Southern California since a 5.5 earthquake hit Chino Hills in 2008, a U.S. Geological Survey seismologist told reporters at a news conference Monday morning.
Robert Graves said there have been at least six aftershocks since the 6:25 a.m. earthquake. The largest so far has been a magnitude 2.7 earthquake that struck five miles northwest of Westwood. …
Monday’s earthquake hit in the northern edge of the Santa Monica Mountains area, a general area responsible for the uplifting of the range over many thousands of years.
“The location is somewhat surprising. It’s within the Santa Monica Mountains. We have not seen seismicity in it in recent times,” said Caltech seismologist Egill Hauksson. “It has been dormant for quite some time.”