M4.1 Earthquake 26 km NE of Ozernovskiy, Russia — April 30, 2023
2023-04-30 22:13:32 UTC (2023-04-30) · approx. 8:13 AM UTC+10 local
On April 30, 2023 at 22:13 UTC, a magnitude 4.1 intermediate depth earthquake struck 26 km NE of Ozernovskiy, Russia, at a depth of 150.6 km and coordinates 51.6617°, 156.7778°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 6.9 mainshock that occurred 29 days ago 72 km NE of Ozernovskiy, Russia. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for weeks to months as stresses on surrounding faults redistribute.
Earthquake Details
156.7778°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake near Ozernovskiy, Russia?
The magnitude 4.1 earthquake that struck 26 km NE of Ozernovskiy, Russia on April 30, 2023 at 22:13 UTC had a depth of 150.6 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 4.1 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M6.9 one earlier?
No. This magnitude 4.1 earthquake is an aftershock of the larger magnitude 6.9 mainshock that occurred earlier 72 km NE of Ozernovskiy, Russia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Actions
Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k9qq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 30, 2023). M4.1 Earthquake 26 km NE of Ozernovskiy, Russia — April 30, 2023. Retrieved July 15, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k9qq/