I was in my class room on the north side of our school when it sounded like a pack of animals was running across the roof from south to north towards me. Once the sound got overhead, the shaking starting and having been through a small quake in LA, I knew immediately what was happening. The shaking is unmistakable. Like others have said, it was relatively light at first, and it seemed like it was going to pass quickly, but then a longer and more pronounced wave went through that lasted just long enough to make me wonder if it was going to get worse. Then, like a rogue gust of wind that passes on an otherwise calm day , it stopped.
Minus the structural damage that some areas have, it was definitely a very cool experience.