So that's what that was! 😱
I was in the Orleans area (near 10th Line at 174) and felt the building start shaking, like a train was going by real close. It couldn't have lasted more than 10-15 seconds. At the time, my friend said there was a big salt truck making a U-turn in the parking lot outside, so we figured that was what caused it, but I was thinking, "man, that's a big salt truck to do that..."
Cool 🙂