M4.0 Earthquake 93 km NNW of Saint-Boniface, Canada — December 17, 2023
2023-12-17 20:19:14 UTC (2023-12-17) · approx. 3:19 PM UTC-5 local
On December 17, 2023 at 20:19 UTC, a magnitude 4.0 shallow crustal earthquake struck 93 km NNW of Saint-Boniface, Canada, at a depth of 9.9 km and coordinates 47.2078°, -76.6533°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-76.6533°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Saint-Boniface, Canada?
The magnitude 4.0 earthquake that struck 93 km NNW of Saint-Boniface, Canada on December 17, 2023 at 20:19 UTC had a depth of 9.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ljqr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 17, 2023). M4.0 Earthquake 93 km NNW of Saint-Boniface, Canada — December 17, 2023. Retrieved February 27, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000ljqr/