M5.1 Earthquake in the Kermadec Islands region — June 23, 2023
2023-06-23 07:26:28 UTC (2023-06-23) · approx. 7:26 PM UTC-12 local
On June 23, 2023 at 07:26 UTC, a magnitude 5.1 shallow crustal earthquake struck in the Kermadec Islands region, at a depth of 23.0 km and coordinates -27.0949°, -176.6428°. This earthquake was detected by 46 seismic stations with good location accuracy and was assigned a USGS significance rating of 400, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-176.6428°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake in the Kermadec Islands region?
The magnitude 5.1 earthquake that struck in the Kermadec Islands region on June 23, 2023 at 07:26 UTC had a depth of 23.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -27.0949°, -176.6428°, which is in the Kermadec Islands region.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000kai7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, June 23, 2023). M5.1 Earthquake in the Kermadec Islands region — June 23, 2023. Retrieved August 26, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kai7/