Saint John (23 km SE from epicenter)
It was more the noise than anything else. Slight shaking (concrete building). Our local oil refinery had an explosion a few months back and the sound was louder than that.

Kingston (24 km E from epicenter)
We live right beside the Saint john River about 20km north of Saint John, NB. The earthquake passed through the house from SW to NE in a slow (several seconds) wave and ended with a thud somewhat upriver from us. We are across the river from a military camp (Gagetown) and often feel the impact of explosions there, but this was completely different.

Hampton Parish (33 km E from epicenter)
Co-workers around Saint John were on a conference call and they all felt it in different locations. prompted to look up this site and found it was an earthquake.