Elsinore Fault Zone

[1][2] The Elsinore Fault Zone, not including Whittier, Chino, and Laguna Salada faults, is 180 kilometers (110 mi) long with a slip-rate of 4.0 millimeters/year (0.15 in/yr).

It is estimated that this zone is capable of producing a quake of 6.5–7.5 MW.

The projected interval between major rupture events is 250 years.

The last major rupture event on the main Elsinore fault was in 1910 with a 6 MW earthquake centered just northwest of the city of Lake Elsinore.

[3] The fault runs from the mountainous Peninsular Ranges region between El Centro and San Diego, northwest to the Chino Hills range and Chino Hills.

California Coast, Los Angeles to San Diego Bay. The Elsinore Fault Zone is labeled in the center running along the Santa Ana Mountains. NASA photo, 2008