M4.1 Earthquake 184 km S of Severo-Kuril’sk, Russia — July 31, 2025
2025-07-31 22:21:26 UTC (2025-07-31) · approx. 8:21 AM UTC+10 local
On July 31, 2025 at 22:21 UTC, a magnitude 4.1 shallow crustal earthquake struck 184 km S of Severo-Kuril’sk, Russia, at a depth of 58.0 km and coordinates 49.0396°, 155.7330°.
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
155.7330°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near Severo-Kuril’sk, Russia?
The magnitude 4.1 earthquake that struck 184 km S of Severo-Kuril’sk, Russia on July 31, 2025 at 22:21 UTC had a depth of 58.0 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: us6000r2ib). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, July 31, 2025). M4.1 Earthquake 184 km S of Severo-Kuril’sk, Russia — July 31, 2025. Retrieved October 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000r2ib/