Tuesday’s M5.1 was the strongest to strike the Bay Area since the South Napa earthquake in 2014. That event, a M6.0, resulted in one death and dozens of injuries. The quake occurred on the Calaveras Fault, known among geologists as a “creeping fault.” It usually moves aseismically, or without producing

Mr. Worry: the San Andreas Fault The title of Mr. Worry goes to the San Andreas Fault, since he worries the whole state of California. The San Andreas is arguably the world’s most famous fault. It leveled Los Angeles with a fictional M9.9 in 1974’s cleverly-titled Earthquake. Casualties included characters