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
Cascadia Catalog 1793-1929 A compilation of historic records and early earthquake catalogs for Washington, Oregon, and southern British Columbia.
The 1872 Earthquake - The PNW's largest historic crustal earthquake - located near Entiat
- Magnitude estimated at 6.8-7.4
