M4.2 Earthquake 79 km E of Petropavlovsk-Kamchatsky, Russia — September 20, 2025
2025-09-20 16:07:54 UTC (2025-09-20) · approx. 3:07 AM UTC+11 local
On September 20, 2025 at 16:07 UTC, a magnitude 4.2 shallow crustal earthquake struck 79 km E of Petropavlovsk-Kamchatsky, Russia, at a depth of 67.1 km and coordinates 53.0164°, 159.8063°.
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
159.8063°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 79 km E of Petropavlovsk-Kamchatsky, Russia on September 20, 2025 at 16:07 UTC had a depth of 67.1 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: us6000rgx2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 20, 2025). M4.2 Earthquake 79 km E of Petropavlovsk-Kamchatsky, Russia — September 20, 2025. Retrieved December 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rgx2/