I just happened to be bending over to pick up papers. The whole house rattled (it didn't shake it just rattled)....I really thought it was a truck, or a low plane but didn't see anything. I randomly called my sister and said "I SWEAR we just had an earthquake". It was classic signsl...rattling for 30 ish seconds, car alarms going off, etc. Later on I was happy I was right.....and more importantly I wasn't going crazy....
too bad you didn't feel it!!