M4.3 Earthquake 123 km ESE of Kuril’sk, Russia — July 17, 2026
2026-07-17 21:35:46 UTC (1 day ago) · approx. 7:35 AM UTC+10 local
On July 17, 2026 at 21:35 UTC, a magnitude 4.3 shallow crustal earthquake struck 123 km ESE of Kuril’sk, Russia, at a depth of 35.0 km and coordinates 44.9233°, 149.3916°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
149.3916°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Kuril’sk, Russia?
The magnitude 4.3 earthquake that struck 123 km ESE of Kuril’sk, Russia on July 17, 2026 at 21:35 UTC had a depth of 35.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000t1h7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 17, 2026). M4.3 Earthquake 123 km ESE of Kuril’sk, Russia — July 17, 2026. Retrieved July 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t1h7/