4.2

M4.2 Earthquake 65 km NE of Petropavlovsk-Kamchatsky, RussiaOctober 28, 2025

2025-10-28 15:48:30 UTC (2025-10-28) · approx. 2:48 AM UTC+11 local

MagnitudeM4.2(mb)
Time15:48 UTC2:48 AM UTC+11
Depth77.0 kmintermediate depth
Coordinates53.413°, 159.417°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 28, 2025 at 15:48 UTC, a magnitude 4.2 intermediate depth earthquake struck 65 km NE of Petropavlovsk-Kamchatsky, Russia, at a depth of 77.0 km and coordinates 53.4130°, 159.4168°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 53.41°, 159.42°

Earthquake Details

Magnitude
4.2 mb
Depth
77.0 km
intermediate depth
Location
53.4130°N
159.4168°E

Technical Information

Event ID
us6000rnyq
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
10
Azimuthal Gap
137.0°
Min Station Distance
1.076°
RMS Residual
0.44 sec
Last Updated
2026-01-15 22:46:59 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Petropavlovsk-Kamchatsky, Russia?

The magnitude 4.2 earthquake that struck 65 km NE of Petropavlovsk-Kamchatsky, Russia on October 28, 2025 at 15:48 UTC had a depth of 77.0 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 4.2 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.

Authoritative source: USGS event page (event ID: us6000rnyq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, October 28, 2025). M4.2 Earthquake 65 km NE of Petropavlovsk-Kamchatsky, RussiaOctober 28, 2025. Retrieved May 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rnyq/