M4.1 Earthquake 225 km SSW of Severo-Kuril’sk, Russia — August 28, 2025
2025-08-28 22:00:58 UTC (2025-08-28) · approx. 8:00 AM UTC+10 local
On August 28, 2025 at 22:00 UTC, a magnitude 4.1 shallow crustal earthquake struck 225 km SSW of Severo-Kuril’sk, Russia, at a depth of 63.2 km and coordinates 48.8358°, 154.8213°.
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
154.8213°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 225 km SSW of Severo-Kuril’sk, Russia on August 28, 2025 at 22:00 UTC had a depth of 63.2 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: us6000rcbb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 28, 2025). M4.1 Earthquake 225 km SSW of Severo-Kuril’sk, Russia — August 28, 2025. Retrieved November 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rcbb/