M4.0 Earthquake 104 km S of Ust’-Kamchatsk Staryy, Russia — April 25, 2026
2026-04-25 13:46:10 UTC (2026-04-25) · approx. 12:46 AM UTC+11 local
On April 25, 2026 at 13:46 UTC, a magnitude 4.0 shallow crustal earthquake struck 104 km S of Ust’-Kamchatsk Staryy, Russia, at a depth of 44.5 km and coordinates 55.2865°, 162.5161°.
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
162.5161°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Ust’-Kamchatsk Staryy, Russia?
The magnitude 4.0 earthquake that struck 104 km S of Ust’-Kamchatsk Staryy, Russia on April 25, 2026 at 13:46 UTC had a depth of 44.5 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.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Actions
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000si6r). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 25, 2026). M4.0 Earthquake 104 km S of Ust’-Kamchatsk Staryy, Russia — April 25, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000si6r/