M4.2 Earthquake near Kermadec Islands, New Zealand — June 23, 2023
2023-06-23 19:42:29 UTC (2023-06-23) · approx. 7:42 AM UTC-12 local
On June 23, 2023 at 19:42 UTC, a magnitude 4.2 intermediate depth earthquake struck near Kermadec Islands, New Zealand, at a depth of 148.6 km and coordinates -30.0301°, -178.4074°.
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.
Earthquake Details
-178.4074°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Kermadec Islands, New Zealand?
The magnitude 4.2 earthquake that struck near Kermadec Islands, New Zealand on June 23, 2023 at 19:42 UTC had a depth of 148.6 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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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: us6000kp7g). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 23, 2023). M4.2 Earthquake near Kermadec Islands, New Zealand — June 23, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kp7g/