I felt it too sitting in my apartment near the drum tower. Kinda freaked me out a little.

Are you sure it was an earthquake?

http://www.guardian.co.uk/media/2010/apr/09/jonathan-ross-interview

Ross had been adamant beforehand that he was going to talk only about comics, and nothing else. Definitely not the BBC, or Sachsgate, or his salary. But self-censorship doesn't seem to come naturally, and by the afternoon he's telling anecdotes about accidentally waking his wife up in bed in LA by masturbating next to her. She woke up with a start, screaming "Earthquake!" – one of her great fears, unfortunately – presenting Ross with the tricky choice of letting her believe a quake had just struck, or admitting it was only him wanking. (He opted for the latter.)