Looks like Earthquake happended in Montreal, Ottawa, Toronto at same time. It is the first time I feel the earthquake. Hopefully it is not a big earthquake.  First of all, I think maybe someone is jumping on the second floor. However, it lasts around 20 seconds.  Everything is shaking. Then I try to find some information from google. there are some people already post this earthquake on the internet......

2010年 6月23日，下午1点45左右。蒙特利尔轻微地震，本人经历人生中的第一次地震。。。。。。幸好地震不大，未死。继续等待2012的到来。看看是不是真的有世界末日这么一说。