Quakin' and Shakin'

Here's an image of various seismograph recordings during this morning's 5.4 earthquake centered in Chino Hills (here in the Inland Empire). I was sitting at my desk, reading email when I thought the gardeners next door were making some horrific noise. But things started shaking so that I knew it was an earthquake. It was a big enough jolt to give me a fright and make me run to the doorway. The shaking lasted about 15-20 seconds, but seemed much longer. Hal tried to call me to see if the house was still standing, but he couldn't get through, so he came home for lunch early.