4.1

M4.1 Earthquake 168 km ESE of Petropavlovsk-Kamchatsky, RussiaAugust 12, 2025

2025-08-12 19:21:23 UTC (2025-08-12) · approx. 6:21 AM UTC+11 local

MagnitudeM4.1(mb)
Time19:21 UTC6:21 AM UTC+11
Depth23.6 kmshallow crustal
Coordinates52.535°, 160.972°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 12, 2025 at 19:21 UTC, a magnitude 4.1 shallow crustal earthquake struck 168 km ESE of Petropavlovsk-Kamchatsky, Russia, at a depth of 23.6 km and coordinates 52.5353°, 160.9724°.

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.

Map showing earthquake epicenter at 52.54°, 160.97°

Earthquake Details

Magnitude
4.1 mb
Depth
23.6 km
shallow crustal
Location
52.5353°N
160.9724°E

Technical Information

Event ID
us7000qu6t
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
15
Azimuthal Gap
159.0°
Min Station Distance
1.493°
RMS Residual
0.71 sec
Last Updated
2025-10-25 13:40:43 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Petropavlovsk-Kamchatsky, Russia?

The magnitude 4.1 earthquake that struck 168 km ESE of Petropavlovsk-Kamchatsky, Russia on August 12, 2025 at 19:21 UTC had a depth of 23.6 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.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000qu6t). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, August 12, 2025). M4.1 Earthquake 168 km ESE of Petropavlovsk-Kamchatsky, RussiaAugust 12, 2025. Retrieved October 25, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qu6t/