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An earthquake that shook Temecula, Calif., on Friday evening was felt widely across San Diego. The magnitude-4.2 quake was reported at 6:16 p.m. about 11 miles from Temecula at a depth of 9 miles ...
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.
A magnitude 4 earthquake rattled Southern California before dawn Sunday morning — the strongest in a series of modest earthquakes to strike near the Ontario International Airport in the last month.
A 4.4 magnitude earthquake was strongly felt Monday afternoon from the Los Angeles area all the way to San Diego, swaying buildings, rattling dishes and setting off car alarms, but no major damage ...
The quakes, of magnitudes 3.5 and 3.9, occurred within about a half hour of each other. Shaking was felt as far away as Los Angeles, Orange County and San Diego County.
With an area of perceptibility of around 58,500 km 2, the shock was felt from Santa Barbara and Bakersfield to San Diego, Palm Springs, and Las Vegas. This is about half the felt area that was seen during the 1987 Whittier Narrows earthquake, which was felt over an area of 110,000 km 2.
This region is dominated by major strike-slip faults one of them being the San Jacinto Fault which produced the 1968 earthquake. The mainshock's epicenter was near the unincorporated community of Ocotillo Wells in San Diego County. The moment magnitude (M w ) 6.6 strike-slip earthquake struck with a focal depth of 11.1 km (6.9
He pointed to major quakes like the 1857 and 1906 San Andreas earthquakes, as well 1994’s Northridge earthquake, all of which were under the 8.0 magnitude contemplated in “Big One” scenarios ...