45.348332,-75.755358 (Score 1)

Being a GIS student, I was in the middle of writing a mid-term for Remote Sensing at Algonquin College when this puppy hit. Third floor of the tech building. Some good shaking but the noise was what stuck with me. Underground thunder! Nearest to this was back around the early nineties when I was working as a mechanic. I had a car on jack stands and it started rocking back and forth. No sound like this one though. Very cool!