Earthquake Shakes Southern and Central Ontario

On Tuesday night, a magnitude 3.7 earthquake struck southern and central Ontario, with its epicenter located approximately 99 kilometers northeast of Toronto, near Orillia. The tremor occurred just before 11 p.m. ET at a depth of five kilometers. Reports indicate that around 2,600 residents from areas including Kingston, Kitchener, Toronto, and Belleville felt the quake, with some describing a "roaring sound" accompanying the tremor. Notably, there were no immediate reports of damage or injuries following the event.

Magnitude 3.7 earthquake rattles southern and central Ontario

Historically, seismic activity in Ontario is rare, as it lies within an intraplate region of the North American plate. According to Natural Resources Canada, the region has experienced two similar earthquakes in the past 25 years, with the largest recorded being a magnitude 5.5 quake in 1929. The causes of earthquakes in this area are not well understood, but they may result from regional stress fields or the reactivation of old buried faults.

Magnitude 3.7 earthquake rattles southern and central Ontario

Geologist Lindsay Schoenbohm explained that pressure can build over time near old faults, leading to small seismic events known as "snap, crack, pop earthquakes." Natural Resources Canada seismologist Marikah Adams emphasized that while earthquakes are uncommon in this region, they serve as a reminder that seismic events can occur anywhere. She advised residents to follow safety protocols during an earthquake, such as stopping, dropping, covering, and holding on.

Magnitude 3.7 earthquake rattles southern and central Ontario

The U.S. Geological Survey (USGS) recorded the earthquake as a magnitude 4.1 event at a depth of 11.5 kilometers, which differs from Earthquakes Canada's assessment. Seismologist Stephen Crane noted that these discrepancies may arise from the use of different measurement scales and the distinct stations utilized by each organization. He affirmed that Earthquakes Canada is the authoritative source for seismic events within the country.

Magnitude 3.7 earthquake rattles southern and central Ontario

Natural Resources Canada has encouraged residents to remain calm and informed, highlighting that the earthquake serves as an opportunity for scientists to learn and improve predictions for future seismic events. Crane reiterated the importance of relying on Earthquakes Canada for accurate information regarding earthquakes in Canada.

Magnitude 3.7 earthquake rattles southern and central Ontario

• “A good thing to remember if you do experience an earthquake to stop, drop, cover and hold on,” — Marikah Adams, Seismologist, Natural Resources Canada

Magnitude 3.7 earthquake rattles southern and central Ontario

• “There are some things we can control and some things we can't,” — Sarah Cowley, Beaverton-based Artist

Magnitude 3.7 earthquake rattles southern and central Ontario

This earthquake has prompted discussions on social media, with residents reflecting on the recent extreme weather challenges faced in the region. The event serves as a reminder of nature's unpredictability and the importance of preparedness.

Magnitude 3.7 earthquake rattles southern and central Ontario