M4.0 Earthquake 74 km ENE of Petropavlovsk-Kamchatsky, Russia — August 21, 2025
2025-08-21 20:32:54 UTC (2025-08-21) · approx. 7:32 AM UTC+11 local
On August 21, 2025 at 20:32 UTC, a magnitude 4.0 shallow crustal earthquake struck 74 km ENE of Petropavlovsk-Kamchatsky, Russia, at a depth of 63.9 km and coordinates 53.2815°, 159.6736°.
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
159.6736°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Petropavlovsk-Kamchatsky, Russia?
The magnitude 4.0 earthquake that struck 74 km ENE of Petropavlovsk-Kamchatsky, Russia on August 21, 2025 at 20:32 UTC had a depth of 63.9 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: us7000qwhw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 21, 2025). M4.0 Earthquake 74 km ENE of Petropavlovsk-Kamchatsky, Russia — August 21, 2025. Retrieved November 12, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qwhw/