Story in the LA Times. This one was located just east of Sonora High School in La Habra, California. You can click on the maps to see bigger ones. While a 5.1 in this urban area is nothing to joke about, it apparently was shallow though it was on fault that caused the 5.9 1987 Whittier quake that killed 8 and caused considerable damage. The kids at the high school were on spring break this week, so hopefully nothing was going on there.