M4.1 Earthquake 48 km SE of Mil’kovo, Russia — September 9, 2021
2021-09-09 22:44:08 UTC (2021-09-09) · approx. 9:44 AM UTC+11 local
On September 9, 2021 at 22:44 UTC, a magnitude 4.1 intermediate depth earthquake struck 48 km SE of Mil’kovo, Russia, at a depth of 136.0 km and coordinates 54.3588°, 159.1038°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
159.1038°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Mil’kovo, Russia?
The magnitude 4.1 earthquake that struck 48 km SE of Mil’kovo, Russia on September 9, 2021 at 22:44 UTC had a depth of 136.0 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000fbj5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 9, 2021). M4.1 Earthquake 48 km SE of Mil’kovo, Russia — September 9, 2021. Retrieved November 17, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fbj5/