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Since the three damaging earthquakes that occurred in the American Midwest and the United States East Coast (1755 Cape Ann, 1811–1812 New Madrid, 1886 Charleston) were well known, it became apparent to settlers that the earthquake hazard was different in California.
UTC time: 1983-05-02 23:42:37: ISC event: 575305: USGS-ANSSComCat: Local date: May 2, 1983 (): Local time: 4:42 p.m: Magnitude: 6.2 M w [1]: Depth: 10 kilometers (6 mi) [1] Epicenter: 1]: Type: Blind thrust [2]: Areas affected: Central California United States: Total damage: US$10 million [3]: Max. intensity: MMI VIII (Severe) [1]: Landslides: Yes: Aftershocks: 5.9 M w July 22 at 02:39 [4 ...
The 1980 Eureka earthquake (also known as the Gorda Basin earthquake) occurred on November 8 at 02:27:34 local time along the northern coastal area of California in the United States. With a moment magnitude of 7.3 and a maximum Mercalli intensity of VII ( Very strong ), this strike-slip earthquake was the largest to occur in California in 28 ...
On October 17, 1989, at 5:04 p.m. local time, the Loma Prieta earthquake occurred at the Central Coast of California. The shock was centered in The Forest of Nisene Marks State Park in Santa Cruz County, approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains.
UTC time: 1984-04-24 21:15:21: ISC event: 555788: USGS-ANSSComCat: Local date: April 24, 1984 (): Local time: 13:15:21 PST: Magnitude: 6.2 M w [1]: Depth: 10 km (6.2 mi) [1] Epicenter: 1]: Fault: Calaveras Fault: Type: Strike-slip [2]: Areas affected: South Bay Northern California United States: Total damage: $7.5–8 million [3] [4]: Max. intensity: MMI VIII (Severe) [4]: Peak acceleration: 1 ...
Between 1964 and 1994, Los Angeles faced two big earthquakes, which both hit the suburban San Fernando Valley hard: the magnitude 6.6 Sylmar earthquake of 1971, which resulted in 64 deaths; and ...
These homes were typically built before 1980, and especially before 1940. The fix is designed to brace the flimsy wall with plywood and have the foundation bolted to the frame of the house — a ...
The 7:42 a.m. shock was the strongest in the Los Angeles area since the 1971 San Fernando earthquake and was felt as far as San Diego and San Luis Obispo, California and Las Vegas, Nevada. Communication systems and local media were temporarily impaired and power was cut, leaving numerous early morning workers stranded in disabled elevators.