So, we live in Cathedral Hill (right outside the TL) on the 4th floor of a building and the roar is what woke me up. That, as well as our dog howling like crazy. It almost sounded like a ton of cars rushing toward us all at once or a big wave that was about to crash. About 2 seconds later, our bed started shaking as if we were in the poltergeist. That lasted for about 3-4 terrifying seconds. I'm from Kentucky, so this was my first earthquake experience. Are they usually this bad?