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The earliest known earthquake in the U.S. state of California was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also documented earthquakes.
One more thing Southern California is known for: earthquakes. Yet for a long time, and to the great relief of millions, the many active faults that claw and tear through the earth have been ...
A trio of Southern California earthquakes have struck in the area of Newport Beach and Costa Mesa in the last two days, with a pair rumbling late Thursday afternoon.
Hutton worked on a project to improve the consistency of the “earthquake catalog”, which is a list of over 400,000 southern California quakes recorded since 1932. [3] She also worked on the development of earthquake safety programs, such as the statewide Earthquake Early Warning System , which could provide early notice of an earthquake and ...
There was speculation that the Chino Hills earthquake may have been a foreshock to a larger earthquake. [26] The Southern California Seismic Network's Aftershock Probability Report, produced minutes after the event, stated that "Most likely, the recent mainshock will be the largest in the sequence. However, there is a small chance, c. 5–10% ...
A Magnitude 3.6 earthquake struck in Southern California on Sept. 16, 2024, according to the United States Geological Survey, marking the second temblor to hit the region in less than five days.
In recent days, Southern California has experienced one earthquake after another. A 3.6 in Ojai on May 31. Two of a similar magnitude under the East Los Angeles area of El Sereno .
The 1952 Kern County earthquake occurred on July 21 in the southern San Joaquin Valley and measured 7.3 on the moment magnitude scale. The main shock occurred at 4:52 am Pacific Daylight Time (11:52 UTC ), killed 12 people, injured hundreds more and caused an estimated $60 million in property damage.