M4.3 Earthquake south of the Kermadec Islands — October 2, 2023
2023-10-02 23:39:47 UTC (2023-10-02) · approx. 11:39 AM UTC+12 local
On October 2, 2023 at 23:39 UTC, a magnitude 4.3 intermediate depth earthquake struck south of the Kermadec Islands, at a depth of 216.6 km and coordinates -32.5705°, 179.8310°.
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
179.8310°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake south of the Kermadec Islands?
The magnitude 4.3 earthquake that struck south of the Kermadec Islands on October 2, 2023 at 23:39 UTC had a depth of 216.6 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: us6000lcdr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, October 2, 2023). M4.3 Earthquake south of the Kermadec Islands — October 2, 2023. Retrieved December 14, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lcdr/