The moderate earthquake that struck Southern California in Spring did more damage than people may think - and a bigger quake on that fault could be more devastating that a "big one" on the region’s infamous San Andreas Fault, a newly released report shows. Karen Clark & Co. issued a new report on the La Habra earthquake. The report examines at the impact of the March 28 quake, the geography of Greater Los Angeles, and possible future earthquake scenarios for the area.