M4.0 Earthquake near Northwest Territories, Canada — October 18, 2020
2020-10-18 16:46:37 UTC (2020-10-18) · approx. 8:46 AM UTC-8 local
On October 18, 2020 at 16:46 UTC, a magnitude 4.0 shallow crustal earthquake struck near Northwest Territories, Canada, at a depth of 2.2 km and coordinates 62.2553°, -124.4129°.
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
-124.4129°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Northwest Territories, Canada?
The magnitude 4.0 earthquake that struck near Northwest Territories, Canada on October 18, 2020 at 16:46 UTC had a depth of 2.2 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: us6000c97v). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 18, 2020). M4.0 Earthquake near Northwest Territories, Canada — October 18, 2020. Retrieved December 29, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000c97v/