M4.3 Earthquake 122 km ESE of Severo-Kuril’sk, Russia — August 8, 2025
2025-08-08 23:45:14 UTC (2025-08-08) · approx. 10:45 AM UTC+11 local
On August 8, 2025 at 23:45 UTC, a magnitude 4.3 shallow crustal earthquake struck 122 km ESE of Severo-Kuril’sk, Russia, at a depth of 34.8 km and coordinates 50.1569°, 157.6475°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
157.6475°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Severo-Kuril’sk, Russia?
The magnitude 4.3 earthquake that struck 122 km ESE of Severo-Kuril’sk, Russia on August 8, 2025 at 23:45 UTC had a depth of 34.8 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qtbc). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 8, 2025). M4.3 Earthquake 122 km ESE of Severo-Kuril’sk, Russia — August 8, 2025. Retrieved October 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qtbc/