M4.4 Earthquake 178 km E of Severo-Kuril’sk, Russia — September 11, 2025
2025-09-11 17:40:31 UTC (2025-09-11) · approx. 4:40 AM UTC+11 local
On September 11, 2025 at 17:40 UTC, a magnitude 4.4 shallow crustal earthquake struck 178 km E of Severo-Kuril’sk, Russia, at a depth of 10.0 km and coordinates 50.6089°, 158.6547°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
158.6547°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near Severo-Kuril’sk, Russia?
The magnitude 4.4 earthquake that struck 178 km E of Severo-Kuril’sk, Russia on September 11, 2025 at 17:40 UTC had a depth of 10.0 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000rekd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 11, 2025). M4.4 Earthquake 178 km E of Severo-Kuril’sk, Russia — September 11, 2025. Retrieved December 3, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rekd/