M3.7 Earthquake 17 km W of Rivière-Rouge, Canada — March 19, 2025
2025-03-19 15:57:21 UTC (2025-03-19) · approx. 10:57 AM UTC-5 local
Felt by 122 people across surrounding communities. Maximum shaking intensity MMI 4.4 (moderate).
On March 19, 2025 at 15:57 UTC, a magnitude 3.7 shallow crustal earthquake struck 17 km W of Rivière-Rouge, Canada, at a depth of 10.0 km and coordinates 46.4092°, -75.0886°. The earthquake was reported felt by 122 peopleacross surrounding communities, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.4 (moderate). This earthquake was detected by 36 seismic stations with good location accuracy and was assigned a USGS significance rating of 272, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.7 releases seismic energy equivalent to roughly 5.4 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 215 m — a useful intuition for the size of the slip patch on the fault.
What the Shaking Felt Like
At MMI 4.4 (moderate), people in the most strongly affected areas would have experienced: Mild shaking, similar to a passing truck. Hanging objects swing. Glasses and dishes may rattle. Not commonly felt outdoors.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 122 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-75.0886°E
Technical Information
Common Questions
How strong was the magnitude 3.7 earthquake near Rivière-Rouge, Canada?
The magnitude 3.7 earthquake that struck 17 km W of Rivière-Rouge, Canada on March 19, 2025 at 15:57 UTC had a depth of 10.0 km. It was felt by 122 people with maximum shaking intensity of MMI 4.4 (moderate). For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 46.4092°, -75.0886°, which is 17 km W of Rivière-Rouge, Canada.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000pzsu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 19, 2025). M3.7 Earthquake 17 km W of Rivière-Rouge, Canada — March 19, 2025. Retrieved May 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000pzsu/