M4.0 Earthquake 98 km SSW of Ust’-Kamchatsk Staryy, Russia — October 13, 2021
2021-10-13 20:02:02 UTC (2021-10-13) · approx. 7:02 AM UTC+11 local
On October 13, 2021 at 20:02 UTC, a magnitude 4.0 intermediate depth earthquake struck 98 km SSW of Ust’-Kamchatsk Staryy, Russia, at a depth of 99.7 km and coordinates 55.4864°, 161.6234°.
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
161.6234°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near Ust’-Kamchatsk Staryy, Russia?
The magnitude 4.0 earthquake that struck 98 km SSW of Ust’-Kamchatsk Staryy, Russia on October 13, 2021 at 20:02 UTC had a depth of 99.7 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: us6000fubw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 13, 2021). M4.0 Earthquake 98 km SSW of Ust’-Kamchatsk Staryy, Russia — October 13, 2021. Retrieved December 18, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fubw/