M4.9 Earthquake 192 km E of Tadine, New Caledonia — April 5, 2023
2023-04-05 08:05:56 UTC (2023-04-05) · approx. 7:05 PM UTC+11 local
On April 5, 2023 at 08:05 UTC, a magnitude 4.9 shallow crustal earthquake struck 192 km E of Tadine, New Caledonia, at a depth of 56.7 km and coordinates -21.3604°, 169.7232°. This earthquake was detected by 53 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
169.7232°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Tadine, New Caledonia?
The magnitude 4.9 earthquake that struck 192 km E of Tadine, New Caledonia on April 5, 2023 at 08:05 UTC had a depth of 56.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -21.3604°, 169.7232°, which is 192 km E of Tadine, New Caledonia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000k23a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, April 5, 2023). M4.9 Earthquake 192 km E of Tadine, New Caledonia — April 5, 2023. Retrieved June 13, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000k23a/