M4.2 Earthquake 87 km NE of Shikotan, Russia — August 4, 2025
2025-08-04 20:35:24 UTC (2025-08-04) · approx. 6:35 AM UTC+10 local
On August 4, 2025 at 20:35 UTC, a magnitude 4.2 intermediate depth earthquake struck 87 km NE of Shikotan, Russia, at a depth of 108.0 km and coordinates 44.3680°, 147.4856°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
147.4856°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Shikotan, Russia?
The magnitude 4.2 earthquake that struck 87 km NE of Shikotan, Russia on August 4, 2025 at 20:35 UTC had a depth of 108.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000qrdk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 4, 2025). M4.2 Earthquake 87 km NE of Shikotan, Russia — August 4, 2025. Retrieved October 17, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qrdk/