Good Vibrations

It's official! We live in CA! We had our first earthquake yesterday-- it measured 4.3 and lasted for about 10 seconds.
I was at work when it happened just before 1pm, and everyone was so nonchalant about the whole thing I felt like I was the crazy one wanting to run for the nearest doorway. Am I the only one who finds the earth suddenly SHAKING slightly unsettling? I just kept watching the plants on the desk of my coworker across the aisle. They were shaking to and fro, rattling along, but not sliding or falling. And I just kept thinking, I'm on top of a mountain... I hope it doesn't split open or spew lava. Yeah. That's where my mind goes-- straight to the worst case scenario. Brings new meaning to, "What's shakin?" Because now my answer will be, "My office on Monday." Rock on.