Here I am, a resident of Melbourne, Australia, where we never get interesting earthquakes, visiting SF for the first time (staying in Belmont) and they don’t even wake me for the earthquake they evidently put on for my benefit.
It's just that Belmont's on bedrock. Take Ralston east toward the bay, out on the landfill a few blocks past Oracle, and you won't be sleeping through it. It shakes like Jello out here.