1949 Olympia earthquake

1949 Olympia earthquake
Olympia
Seattle
Tacoma
Date April 13, 1949
Origin time 19:55:44 UTC [1]
Duration ~ 20 s [2]
Magnitude 6.7 Mw [1]
Depth 50 km (31 mi) [1]
Epicenter 47°00′N 122°32′W / 47.0°N 122.53°WCoordinates: 47°00′N 122°32′W / 47.0°N 122.53°W [1]
Areas affected Puget Sound region
Washington
United States
Total damage $25 million [3]
Max. intensity VIII (Severe) [3]
Peak acceleration .25g [2]
Casualties 8 killed [3]
Many injured [3]

The 1949 Olympia earthquake occurred on April 13 at 12:55:44 local time with a moment magnitude of 6.7 and a maximum Mercalli Intensity of VIII (Severe). The shock was located in the area between Olympia and Tacoma, and was felt throughout the state, as well as parts of Oregon, British Columbia, Idaho, and Montana. It is the largest recorded earthquake to occur in the Puget Sound region of Washington. Eight people were killed and many were injured.

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 ISC (2014), ISC-GEM Global Instrumental Earthquake Catalogue (1900-2009), Version 1.05, International Seismological Centre
  2. ↑ 2.0 2.1 Baker, G. E.; Langston, C. A. (1987), "Source parameters of the 1949 magnitude 7.1 south Puget Sound, Washington, earthquake as determined from long-period body waves and strong ground motions", Bulletin of the Seismological Society of America (Seismological Society of America) 77 (5): 1546
  3. ↑ 3.0 3.1 3.2 3.3 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. 380, 385, 386
Sources

External links