Earth shook in Quebec on Thursday morning

quebec earthquake


According to Earthquake Canada, a 3.7 magnitude earthquake struck the province on Thursday morning. This can be felt in the Suroite sector, such as in Salaberry-de-Valleyfield. The official report mentions a tremor that occurred at exactly 7:37 am at a depth of 7 km. The underground shock occurred 7 km northwest of Huntingdon.

Noticeable vibration

According to the Richter scale, humans can feel earthquakes of magnitude 2.5 to 5.4. Fortunately, they cause little or no damage. An earthquake with a magnitude of 3.7 was felt in some areas south of the metropolis on Thursday morning. As per the established standards the shock has been kept in the minor category.

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Low seismic activity in Quebec

Quebec is generally considered a relatively inactive region for earthquakes. There were still about 450 aftershocks in eastern Canada. According to Natural Resources Canada (RNC), there are four of these whose intensity is greater than 4. So far only two events have exceeded magnitude 5.0. On June 23, 1944, an earthquake measuring 5.1 on the Richter scale struck near Godbout, east of Baie-Comeau. More recently, on March 16, 1999, a magnitude 5.1 earthquake struck the region, about sixty kilometers south of Sept-Îles.

For example, western Quebec has experienced at least three major earthquakes in the past. In 1990, a magnitude 4 earthquake struck Mont-Laurier in the Laurentians. More recently, in 1996 and 1997, two events of magnitude 4.4 and 4.3 occurred near Sainte-Agathe-des-Monts, according to the RNC. An earthquake occurs in this area every five days. Collisions of tectonic plates are still rare here compared to other areas of the world where there are active faults.

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Three areas at risk

Despite fairly low seismic activity, three areas in Quebec have been identified as at risk. First of all, the Montreal area is where earthquake risk is highest. The seismic zone of western Quebec includes the Ottawa Valley from Montreal to Témiscamingue, as well as areas of the Laurentians and eastern Ontario.

Again, Charlevoix is ​​the most active region of Eastern Canada. Since most earthquakes occur below the Saint Lawrence River, between the Charlevoix region on the north coast and Kamouraska on the south coast, the region is often called the Charlevoix-Kamoruska seismic zone. Finally, the Bas-Saint-Laurent seismic zone is the third seismically active zone in Quebec. Unlike the Charlevoix seismic zone, no major earthquake has ever been recorded or reported there.

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