Earthquake #2

Some classmates and I were meeting up at another location after school for a study session. The area is not that great so when the elevator started shaking we just thought it was a really crummy place, vowed not to ride in it again and take the stairs instead! What we didn't know was that it was an aftershock earthquake from the other night. This one was a 4.1 magnitude. It wasn't so scary because we were all together wondering what was going on. There was also a sonic boom sound so we all just assumed it was an airplane. Until of course, one of the classmates said it was an aftershock from the same epicenter.