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Seismic, geologic, and other data has been integrated by the Southern California Earthquake Center (renamed "Statewide California Earthquake Center" in October 2023) to produce the Community Fault Model (CFM) database that documents over 140 faults in southern California considered capable of producing moderate to large earthquakes. [1]
The maximum credible earthquake expected to be generated from the Healdsburg Fault is estimated to be about 7.5 on the Richter scale. [1] The last major event in Sonoma County were the 1969 Santa Rosa earthquakes, a magnitude 5.6 and 5.7 doublet that occurred on this fault. The county anticipates similar events every 20–30 years. [2]
This sequence was similar to the 2019 earthquakes in having two main shocks: an M L 5.4 earthquake on August 17 located 11 miles north of Ridgecrest, [131] and an M L 5.8 earthquake on September 20, located about a mile south-southwest of the first earthquake. [132] Another shock on the 24th was M L 4.9. Another similarity with the 2019 events ...
Pages in category "Seismic faults of California" The following 63 pages are in this category, out of 63 total. ... Code of Conduct; Developers; Statistics;
Estimates predict a multi-segment rupture of the fault zone is capable of producing an earthquake of magnitude 7.6–7.9. [6] [3] An earthquake this large in such close proximity to densely-populated southern California would be devastating. [7] In 1986, a M s 5.8 earthquake struck off the coast of Oceanside, killing 1 and injuring 29 more.
The Puente Hills system is capable of producing a magnitude 7.5 earthquake, which runs under highly populated areas of L.A. and Orange counties and could kill 3,000 to 18,000 people, according to ...
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California's approach to seismic safety, particularly in schools, ramped up significantly after the deadly March 10, 1933, earthquake in Long Beach.