M4.6 Earthquake 59 km ENE of Petropavlovsk-Kamchatsky, Russia — September 23, 2025
2025-09-23 17:15:21 UTC (2025-09-23) · approx. 4:15 AM UTC+11 local
On September 23, 2025 at 17:15 UTC, a magnitude 4.6 intermediate depth earthquake struck 59 km ENE of Petropavlovsk-Kamchatsky, Russia, at a depth of 73.3 km and coordinates 53.1767°, 159.5028°. This earthquake was detected by 101 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Russia, a region characterized by the Kuril-Kamchatka subduction zone on the northwestern Pacific Ring of Fire. The nearest mapped fault system is the Kuril-Kamchatka Trench. View all earthquakes in Russia.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
159.5028°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Petropavlovsk-Kamchatsky, Russia?
The magnitude 4.6 earthquake that struck 59 km ENE of Petropavlovsk-Kamchatsky, Russia on September 23, 2025 at 17:15 UTC had a depth of 73.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 53.1767°, 159.5028°, which is 59 km ENE of Petropavlovsk-Kamchatsky, Russia. View all earthquakes in Russia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Has Russia had earthquakes this big before?
The largest recorded earthquake in Russia was the M9.0 Kamchatka earthquake of November 4, 1952. Today's magnitude 4.6 event is significantly smaller than that historical record.
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.
Authoritative source: USGS event page (event ID: us6000rcd9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 23, 2025). M4.6 Earthquake 59 km ENE of Petropavlovsk-Kamchatsky, Russia — September 23, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rcd9/