M4.4 Earthquake 68 km SE of Severo-Kuril’sk, Russia — November 21, 2025
2025-11-21 17:43:06 UTC (2025-11-21) · approx. 3:43 AM UTC+10 local
On November 21, 2025 at 17:43 UTC, a magnitude 4.4 shallow crustal earthquake struck 68 km SE of Severo-Kuril’sk, Russia, at a depth of 54.6 km and coordinates 50.3225°, 156.9122°.
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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.4 mainshock that occurred 17 days ago 38 km SSE of Severo-Kuril’sk, Russia. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
156.9122°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 68 km SE of Severo-Kuril’sk, Russia on November 21, 2025 at 17:43 UTC had a depth of 54.6 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.
Is this the same earthquake as the M5.4 one earlier?
No. This magnitude 4.4 earthquake is an aftershock of the larger magnitude 5.4 mainshock that occurred earlier 38 km SSE of Severo-Kuril’sk, Russia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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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: us6000rtnr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, November 21, 2025). M4.4 Earthquake 68 km SE of Severo-Kuril’sk, Russia — November 21, 2025. Retrieved February 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rtnr/