First earthquake today

This morning I felt my first earthquake, a magnitude 3.4 near Lake Elsinore, about 15 miles away. It was a single bump. I was sitting at my desk at work when it happened. My first thought was that someone had bumped into the cube wall pretty hard. Then I realized that the ceiling tiles fluttered at the same time and I thought that someone had run into the side of the building. Finally, I realized it was an earthquake. It seems it was just a little aftershock, nbd. All of the latest quakes that I might feel can be found here.