M4.2 Earthquake near Kuril Islands — November 18, 2023
2023-11-18 22:31:57 UTC (2023-11-18) · approx. 8:31 AM UTC+10 local
On November 18, 2023 at 22:31 UTC, a magnitude 4.2 shallow crustal earthquake struck near Kuril Islands, at a depth of 54.3 km and coordinates 46.1703°, 151.9626°.
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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 4 days ago near Kuril Islands. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
151.9626°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Kuril Islands?
The magnitude 4.2 earthquake that struck near Kuril Islands on November 18, 2023 at 22:31 UTC had a depth of 54.3 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.
Is this the same earthquake as the M5.1 one earlier?
No. This magnitude 4.2 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier near Kuril Islands. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000lqbb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 18, 2023). M4.2 Earthquake near Kuril Islands — November 18, 2023. Retrieved January 26, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000lqbb/