A M4.1 earthquake rattled Toronto last night. Many residents of the city, who just experienced record snowfall, thought (hopefully?) that the shaking might be the rumbling of a snow plow. No such luck. This was the largest earthquake to hit the region in 20 years. Why do earthquakes occur here, so far from a tectonic plate boundary?

https://earthquakeinsights.substack.com/p/m41-earthquake-shakes-toronto