M5.3 Earthquake northwest of the Kuril Islands — September 2, 2021
2021-09-02 20:26:16 UTC (2021-09-02) · approx. 6:26 AM UTC+10 local
On September 2, 2021 at 20:26 UTC, a magnitude 5.3 deep-focus earthquake struck northwest of the Kuril Islands, at a depth of 441.5 km and coordinates 50.4567°, 150.5391°.
Physical scale: An earthquake of magnitude 5.3 releases seismic energy equivalent to roughly 1 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.7 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
150.5391°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.3 earthquake northwest of the Kuril Islands?
The magnitude 5.3 earthquake that struck northwest of the Kuril Islands on September 2, 2021 at 20:26 UTC had a depth of 441.5 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 50.4567°, 150.5391°, which is northwest of the Kuril Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.3 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000f77w). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 2, 2021). M5.3 Earthquake northwest of the Kuril Islands — September 2, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000f77w/