Each frame in the animation represents a single day in Pacific Standard Time, with the date given in the upper right corner. All the epicenters of earthquakes recorded in southern California for the month of April 1991 are shown in the image below, with the magnitude of the quakes shown by size and color of the circles plotted. A small number of cities and towns are labelled for reference. It is also possible to view this animation without a background , should you wish. Unfortunately, some browsers may not align the animation correctly.
Comments are welcome.
Chronological Index Search for a particular earthquake by date.