California Institute of Technology
Scec: Significant Earthquakes and Faults
An interactive map of significant earthquakes and faults in southern California. Click on each earthquake icon, and see a brief overview of each event.
US Geological Survey
U.s. Geological Survey: Today in Earthquake History
Updated daily, this page describes any notable earthquakes that happened on this day in history. Each earthquake has a link to more information about what happened on that particular day.