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Historic Earthquakes of the Pacific Northwest

  • Map and List of Selected Historic Earthquakes in the Pacific Northwest - from the PNSN

    INDIVIDUAL EARTHQUAKES SINCE 1993 - Information is available for notable past earthquakes. Since 1993, there are web pages for significant earthquakes. Web resources for earlier earthquakes vary. Lots of information is available for the largest earthquakes.

    CATALOG OF LARGER EARTHQUAKES - Accurate locations and magnitudes became possible after the installation of the PNSN in 1969.
    • 1872-Present - PNSN Catalog of Earthquakes Magnitude 4.0 or larger(incomplete before 1970)
    LARGER EARTHQUAKES 1929-1969 - Earthquake felt reports were provided by postmasters across the U.S.
    • 1929-1969 - WA and OR Earthquake information and Isoseismal Maps from United States Earthquakes, U.S. Department of Commerce, Coast and Geodetic Survey
    • NGDC Earthquake Intensity Database - U.S. Intensity Data - 2,500 earthquakes reported from 1638-1928 and more than 18,500 events from 1928-1985.
    EARTHQUAKES SINCE EUROPEAN SETTLEMENT: 1791 - 1928 NATIVE AMERICAN STORIES ABOUT LARGE EARTHQUAKES
    EARTHQUAKES THROUGH GEOLOGIC EVIDENCE
    • January 26, 1700: Mega-quake on the Cascadia Subduction Zone.
      • Science, 22 May 1987, Vol. 236, pp. 942-944
      • Science, 10 April 1987, Vol. 236, pp. 162-168
      • Nature, 8 February, 1990, Vol. 343, pp. 511-512
      • Science News, 2 February, 1990, p. 104
      • Nature, 12 Sept. 1991, Vol 353, pp. 156-158
      • Science, 5 April 1991, Vol. 252, pp. 101-103
      • Coastal Evidence for Great Earthquakes in Western Washington, USGS Professional Paper 1560, v. 1, 1992
      • Nature, 1996, v. 379, p. 246-249
      • Nature, Oct. 30, 1997, v. 389, p. 922
    • 1,100 years ago: Magnitude 7.4 (estimated) crustal earthquake on the Seattle Fault
      • Science, Dec. 4, 1992, Vol. 258; Five articles.
      • Science News, Dec. 5, 1993, p. 388-389.
  • This is file /SEIS/PNSN/CATDAT/historic.html, last modified 6/24/02
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