1932 Eureka earthquake

1932 Eureka earthquake
Date June 6, 1932 (1932-06-06)
Origin time 08:44:26 UTC [1]
Magnitude 6.4 Mw [1]
Depth 9.3 mi (15 km) [1]
Epicenter 40°44′N 124°13′W / 40.73°N 124.21°W / 40.73; -124.21Coordinates: 40°44′N 124°13′W / 40.73°N 124.21°W / 40.73; -124.21 [1]
Type Unknown
Areas affected North Coast (California)
United States
Max. intensity VIII (Severe) [2]
Casualties One dead, three injured [2][3]

The 1932 Eureka earthquake occurred on June 6 at 00:44:26 local time along the northern coastal area of California in the United States. With a moment magnitude of 6.4 and a maximum Mercalli intensity of VIII (Severe), this earthquake left one person dead and several injured. The shock was the largest in the area since 1923 and was felt in southern Oregon and northern California.

Tectonic setting

Near Cape Mendocino, the Mendocino Triple Junction is an area of active seismicity where three tectonic plates come together. The Mendocino Fracture Zone (also known as the Mendocino Fault east of the Gorda Ridge) is a transform fault that separates the Pacific and Gorda Plates. To the south, the relative motion between the Pacific Plate and North American Plate is accommodated by the San Andreas Fault, and to the north, the Gorda Plate is converging with the North American Plate at the Cascadia Subduction Zone.[4]

See also


  1. 1 2 3 4 ISC (2016), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 3.0, International Seismological Centre
  2. 1 2 Stover, C. W.; Coffman, J. L. (1993), Seismicity of the United States, 1568–1989 (Revised) – U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, pp. 78, 129, 130
  3. "One Dead, Three Hurt in Eureka Earthquake". Woodland Democrat. June 6, 1932.
  4. Bakun, W. H. (2000), "Seismicity of California's North Coast", Bulletin of the Seismological Society of America, Seismological Society of America, 90 (4): 797, 798

External links

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