M4.2 Earthquake 88 km ENE of Petropavlovsk-Kamchatsky, Russia — August 3, 2021
2021-08-03 23:38:27 UTC (2021-08-03) · approx. 10:38 AM UTC+11 local
On August 3, 2021 at 23:38 UTC, a magnitude 4.2 shallow crustal earthquake struck 88 km ENE of Petropavlovsk-Kamchatsky, Russia, at a depth of 61.1 km and coordinates 53.3017°, 159.8916°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
159.8916°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Petropavlovsk-Kamchatsky, Russia?
The magnitude 4.2 earthquake that struck 88 km ENE of Petropavlovsk-Kamchatsky, Russia on August 3, 2021 at 23:38 UTC had a depth of 61.1 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000f47x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 3, 2021). M4.2 Earthquake 88 km ENE of Petropavlovsk-Kamchatsky, Russia — August 3, 2021. Retrieved October 14, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000f47x/