Be prepared for earthquakes, wherever you live in California, or anywhere in the USA for that matter (well, nearly anywhere - I believe Wisconsin and Iowa are the only two states that have not experienced quakes). The excitement builds as you realize that a quake can strike at any moment. Maybe this swarm is a precursor event, maybe not. We can't tell until the dust settles.

So, yes, keep the camping gear at the ready....If you are ready for an EQ, you are prepped for a whole bunch of other stuff as well.