M4.0 Earthquake 171 km ESE of Novaya Chara, Russia — October 6, 2025
2025-10-06 20:28:34 UTC (2025-10-06) · approx. 4:28 AM UTC+8 local
On October 6, 2025 at 20:28 UTC, a magnitude 4.0 shallow crustal earthquake struck 171 km ESE of Novaya Chara, Russia, at a depth of 10.0 km and coordinates 56.4972°, 121.0314°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
121.0314°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Novaya Chara, Russia?
The magnitude 4.0 earthquake that struck 171 km ESE of Novaya Chara, Russia on October 6, 2025 at 20:28 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 4.0 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000rk0e). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, October 6, 2025). M4.0 Earthquake 171 km ESE of Novaya Chara, Russia — October 6, 2025. Retrieved December 19, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rk0e/