M4.9 Earthquake 78 km NE of Tadine, New Caledonia — September 25, 2026
2026-09-25 23:32:44 UTC (59 min ago) · approx. 10:32 AM UTC+11 local
Aftershock of the M5.4 mainshock.
On September 25, 2026 at 23:32 UTC, a magnitude 4.9 shallow crustal earthquake struck 78 km NE of Tadine, New Caledonia, at a depth of 10.0 km and coordinates -21.1532°, 168.5092°. This earthquake was detected by 26 seismic stations with moderate 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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.4 mainshock that occurred 39 minutes ago 69 km ENE of Tadine, New Caledonia. Since the mainshock, the USGS has recorded 3 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
168.5092°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Tadine, New Caledonia?
The magnitude 4.9 earthquake that struck 78 km NE of Tadine, New Caledonia on September 25, 2026 at 23:32 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -21.1532°, 168.5092°, which is 78 km NE 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.
Is this the same earthquake as the M5.4 one earlier?
No. This magnitude 4.9 earthquake is an aftershock of the larger magnitude 5.4 mainshock that occurred earlier 69 km ENE of Tadine, New Caledonia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Actions
Authoritative source: USGS event page (event ID: us6000txqf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 25, 2026). M4.9 Earthquake 78 km NE of Tadine, New Caledonia — September 25, 2026. Retrieved September 25, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000txqf/