4.2

M4.2 Earthquake 126 km S of Vilyuchinsk, RussiaJanuary 26, 2026

2026-01-26 23:21:55 UTC (2026-01-26) · approx. 10:21 AM UTC+11 local

MagnitudeM4.2(mb)
Time23:21 UTC10:21 AM UTC+11
Depth73.4 kmintermediate depth
Coordinates51.807°, 158.680°
Felt byNo felt reports
Status✓ Reviewed by USGS

On January 26, 2026 at 23:21 UTC, a magnitude 4.2 intermediate depth earthquake struck 126 km S of Vilyuchinsk, Russia, at a depth of 73.4 km and coordinates 51.8073°, 158.6801°.

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 51.81°, 158.68°

Earthquake Details

Magnitude
4.2 mb
Depth
73.4 km
intermediate depth
Location
51.8073°N
158.6801°E

Technical Information

Event ID
us6000s838
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
27
Azimuthal Gap
183.0°
Min Station Distance
1.218°
RMS Residual
0.65 sec
Last Updated
2026-04-21 16:27:57 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Vilyuchinsk, Russia?

The magnitude 4.2 earthquake that struck 126 km S of Vilyuchinsk, Russia on January 26, 2026 at 23:21 UTC had a depth of 73.4 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: us6000s838). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, January 26, 2026). M4.2 Earthquake 126 km S of Vilyuchinsk, RussiaJanuary 26, 2026. Retrieved May 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000s838/