M5.3 Earthquake 275 km ESE of Tadine, New Caledonia — September 23, 2023
2023-09-23 15:51:21 UTC (2023-09-23) · approx. 2:51 AM UTC+11 local
On September 23, 2023 at 15:51 UTC, a magnitude 5.3 shallow crustal earthquake struck 275 km ESE of Tadine, New Caledonia, at a depth of 10.0 km and coordinates -22.2668°, 170.4284°. This earthquake was detected by 52 seismic stations with good location accuracy and was assigned a USGS significance rating of 432, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.3 releases seismic energy equivalent to roughly 1 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.7 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
170.4284°E
Technical Information
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Common Questions
How strong was the magnitude 5.3 earthquake near Tadine, New Caledonia?
The magnitude 5.3 earthquake that struck 275 km ESE of Tadine, New Caledonia on September 23, 2023 at 15:51 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -22.2668°, 170.4284°, which is 275 km ESE of Tadine, New Caledonia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.3 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000kxnj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 23, 2023). M5.3 Earthquake 275 km ESE of Tadine, New Caledonia — September 23, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000kxnj/