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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.
Seismogram of the earthquake. The earthquake measured 6.4 on the moment magnitude scale, and had a maximum Mercalli intensity of VIII (Severe). It came exactly a year after a 6.2 magnitude earthquake struck onshore in the Cape Mendocino area on December 20, 2021, [7] causing only minor damage. [8]
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings — later followed by seismotomography imaging technique [1] and detections using space satellites from outer space [2] — they rely mainly on the analysis of written sources, observations of shaking ...
2. 2022 Ferndale earthquake [ 35] April 5, 2024. New Jersey. 4.8 M w. 0. 2024 New Jersey earthquake [ 36] Two-percent probability of exceedance in 50 years map of peak ground acceleration from the United States Geological Survey, released July 17, 2014.
Josh Marcus. June 17, 2024 at 2:36 PM. 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 ...
A magnitude 4.1 earthquake was reported offshore in California on the morning of New Year’s day, according to the US Geological Survey. The seismic event occurred at 8:27 am local time 11 miles ...
July 14, 2022 at 4:59 PM. U.S. Geological Survey. A 3.3-magnitude earthquake rattled Southern California, geologists said. The earthquake shook Lytle Creek, about 20 miles north of Rancho ...
The 1812 San Juan Capistrano earthquake, also known simply as the Capistrano earthquake or the Wrightwood earthquake, [6] occurred on December 8 at 15:00 UTC in Alta California. At the time, this was a colonial territory of the Spanish Empire. Damage occurred at several of the missions in the region of Pueblo de Los Ángeles, including Mission ...