For the second day in a row, the small branch of the Hayward Fault that travels fairly near our house decided to shake a bit. The epicenter was just south of the campus (11.6 km deep), fairly near the tunnel on Hwy 24. The map link covers the whole world, but you can pull up regional maps. Since this is an area through which BART travels, obviously there needed to be a rail inspection. In my mind, this is a good reason for BART to be delayed.
[there are plenty of other reasons why BART becomes delayed. For the moment I will stay off that particular soap-box].
It lead to much discussion around school. And on BART. Mostly people were just glad that nothing serious happened and that they could blithely leave consideration of the potential for disaster sometime in the future.