Earthquake that rocks Southern California

At 11:44am this morning we had a 5.4 earthquake.  I was actually checking my email, just put the boys down for a nap and it happened.  My house starting shaking and moving back and forth. WEIRD!!!  I have been in a few earthquakes before but this one seemed to last forever.  My first thought was to grab the boys but then it stopped.  After it was all over my heart was pounding and I was a little shaky.