Welcome to California - images of Golden Gate Bridge, ocean sunset, waterfall, flowers, and city skyline
Department of Conservation
  Significant California Earthquakes
  Epicenters of and Areas Damaged by M >= 5 California Earthquakes, 1800-1999 (Map Sheet 49)
  Earthquake Anniversaries
  Areas Damaged by Historic Earthquakes
  Downloadable Earthquake Catalogs
  How Earthquakes are Measured (Note 32) (pdf)
  Loss Estimation
About Us
Contact Us
Jobs
Site Map
Help/FAQ

California Department of Conservation logo

California Geological Survey

California Historical Earthquake Online Database

Click on map for regional earthquakes
-12242 -12142 -12442 -12342 -12042 -12141 -12441 -12241 -12041 -12341 -12240 -12140 -12440 -12040 -12340 -12339 -11939 -12139 -12239 -12039 -12439 -12138 -11938 -12238 -11838 -12038 -12338 -11536 -11535 -12137 -11937 -11737 -12237 -11837 -12037 -11534 -11533 -11636 -12136 -11936 -11736 -12236 -11836 -12036 -11735 -11635 -12135 -11935 -11835 -12035 -11434 -11734 -11634 -11934 -11834 -12034 -11433 -11435 -11733 -11633 -11933 -11833

This website displays the felt effects for selected historical California earthquakes. By selecting a linked earthquake you can see a map of the area and intensity of shaking from that earthquake. Then by clicking on a city on the intensity map (or list beneath the map) you can see what that location reported after the earthquake. These “felt reports” are usually from newspapers during the 1850 to 1930 time period. The felt reports were compiled and published in 1981* and 1982** with updates added through the years. Not all earthquakes have intensity maps and felt reports online since the conversion from printed report to web page is an on-going process. Most of the San Francisco Bay area events between 1838 and 1906 are finished.

*Toppozada, T. R., C. R. Real, and D. L. Parke (1981). Preparation of isoseismal maps and summaries of reported effects for pre-1900 California earthquakes, Calif. Div. Mines Geol. Open-File Rept. 81-11 SAC, 182 pp.
**Toppozada, T. R. and D. L. Parke (1982). Areas damaged by California earthquakes, 1900-1949, Calif. Div. Mines Geol. Open-File Rept. 82-17, 65 pp.


To determine historical seismicity around a location:

Enter coordinates below:

Longitude: Latitude:
Please enter coordinates as Decimal Degrees
Example:   Longitude -122.0017   Latitude 36.9894

-OR-

Enter location name below:

City/Town:


Earthquake catalog from: Toppozada, T. R. and D. Branum (2002) California M >= 5.5 earthquakes, history and areas damaged, in Lee, W. H., Kanamori, H. and Jennings, P., International Handbook of Earthquake and Engineering Seismology, International Association of Seismology and Physics of the Earth's Interior.


Back to Top of Page

Last edited on May 09, 2013
Contact: webmaster@consrv.ca.gov | Copyright © California Department of Conservation, 2007. All rights reserved.
The Department of Conservation makes no warranties as to the suitability of this product for any purpose.
© 2007 State of California. Arnold Schwarzenegger, Governor.
Conditions of Use Privacy Policy