Also worrisome is the Hayward Fault, running through densely populated cities near San Francisco Bay, and the San Jacinto Fault running through the middle of San Bernardino, east of Los Angeles.

• 还令人担忧的是，海沃德断层，贯穿于人口稠密的城市附近的旧金山湾，和圣杰森托故障运行，通过中圣贝纳迪诺，洛杉矶以东。