4.2

M4.2 Earthquake 178 km SW of Severo-Kuril’sk, RussiaMay 10, 2026

2026-05-10 21:00:19 UTC (4 hours ago) · approx. 7:00 AM UTC+10 local

MagnitudeM4.2(mb)
Time21:00 UTC7:00 AM UTC+10
Depth129.4 kmintermediate depth
Coordinates49.511°, 154.404°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 10, 2026 at 21:00 UTC, a magnitude 4.2 intermediate depth earthquake struck 178 km SW of Severo-Kuril’sk, Russia, at a depth of 129.4 km and coordinates 49.5113°, 154.4044°.

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 49.51°, 154.40°

Earthquake Details

Magnitude
4.2 mb
Depth
129.4 km
intermediate depth
Location
49.5113°N
154.4044°E

Technical Information

Event ID
us6000swsn
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
27
Azimuthal Gap
160.0°
Min Station Distance
4.152°
RMS Residual
0.78 sec
Last Updated
2026-05-11 01:17:47 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Severo-Kuril’sk, Russia?

The magnitude 4.2 earthquake that struck 178 km SW of Severo-Kuril’sk, Russia on May 10, 2026 at 21:00 UTC had a depth of 129.4 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: us6000swsn). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, May 10, 2026). M4.2 Earthquake 178 km SW of Severo-Kuril’sk, RussiaMay 10, 2026. Retrieved May 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000swsn/