About 10 years ago there was one centered in the Niles Michigan area - it was a 4.2 or so I believe.
I was sitting at my computer desk - I was living in a cement block walled house on a slab at the time - and I had large bookshelf speakers on home made stands on either side of my desk.
All of a sudden they started moving and I could feel it in my feet.
I remember saying out loud "what the _____ was that??"
