4.1

M4.1 Earthquake 209 km SE of Vilyuchinsk, RussiaApril 17, 2026

2026-04-17 20:51:08 UTC (2026-04-17) · approx. 7:51 AM UTC+11 local

MagnitudeM4.1(mb)
Time20:51 UTC7:51 AM UTC+11
Depth9.1 kmshallow crustal
Coordinates51.392°, 160.178°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 17, 2026 at 20:51 UTC, a magnitude 4.1 shallow crustal earthquake struck 209 km SE of Vilyuchinsk, Russia, at a depth of 9.1 km and coordinates 51.3915°, 160.1780°.

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 51.39°, 160.18°

Earthquake Details

Magnitude
4.1 mb
Depth
9.1 km
shallow crustal
Location
51.3915°N
160.1780°E

Technical Information

Event ID
us6000ssm7
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
28
Azimuthal Gap
155.0°
Min Station Distance
2.297°
RMS Residual
1.17 sec
Last Updated
2026-05-08 19:42:09 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Vilyuchinsk, Russia?

The magnitude 4.1 earthquake that struck 209 km SE of Vilyuchinsk, Russia on April 17, 2026 at 20:51 UTC had a depth of 9.1 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.

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: us6000ssm7). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 17, 2026). M4.1 Earthquake 209 km SE of Vilyuchinsk, RussiaApril 17, 2026. Retrieved May 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000ssm7/