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The first earthquake Thursday, at 4:52 p.m., occurred along the Newport Beach-Costa Mesa border. The magnitude 3.6 temblor shook near Irvine Avenue and where Westcliff Drive in Newport Beach ...
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.
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The Newport–Inglewood-Rose Canyon Fault Zone. The Newport–Inglewood Fault is a right-lateral strike-slip fault [1] in Southern California.The fault extends for 47 mi (76 km) [1] (110 miles if the Rose Canyon segment is included) from Culver City southeast through Inglewood and other coastal communities to Newport Beach at which point the fault extends east-southeast into the Pacific Ocean.
The 2008 Chino Hills earthquake occurred at 11:42:15 am PDT (18:42:15 UTC) on July 29 in Southern California. The epicenter of the magnitude 5.4 earthquake was in Chino Hills, c. 28 miles (45 km) east-southeast of downtown Los Angeles. Movement on an oblique-slip fault resulted in a maximum Mercalli intensity of VI (Strong).
Thirteen days later, the Ventura earthquake with an estimated magnitude of 7.1–7.5 struck. It generated a 3.4-meter tsunami around the Santa Barbara coast. The damage from that was moderate and significantly less deadly. That quake may have been triggered by the Wrightwood earthquake however, the location of its epicenter remains uncertain. [14]
Should a similar earthquake happen today, scientists say a giant tsunami would wash away coastal towns, destroy U.S. 101 and cause $70 billion in damage over a large swath of the Pacific Coast.
The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.