M4.3 Earthquake 180 km NE of Kuril’sk, Russia — August 25, 2026
2026-08-25 17:44:51 UTC (2 hours ago) · approx. 3:44 AM UTC+10 local
On August 25, 2026 at 17:44 UTC, a magnitude 4.3 intermediate depth earthquake struck 180 km NE of Kuril’sk, Russia, at a depth of 166.3 km and coordinates 46.2509°, 149.6836°.
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
149.6836°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Kuril’sk, Russia?
The magnitude 4.3 earthquake that struck 180 km NE of Kuril’sk, Russia on August 25, 2026 at 17:44 UTC had a depth of 166.3 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: us7000tbsx). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 25, 2026). M4.3 Earthquake 180 km NE of Kuril’sk, Russia — August 25, 2026. Retrieved August 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tbsx/