M4.9 Earthquake 73 km ENE of Tadine, New Caledonia — September 26, 2026
2026-09-26 10:21:05 UTC (1 hour ago) · approx. 9:21 PM UTC+11 local
Aftershock of the M5.0 mainshock.
On September 26, 2026 at 10:21 UTC, a magnitude 4.9 shallow crustal earthquake struck 73 km ENE of Tadine, New Caledonia, at a depth of 10.0 km and coordinates -21.2105°, 168.4957°. This earthquake was detected by 44 seismic stations with good 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 5.0 mainshock that occurred 3 hours ago 78 km ENE of Tadine, New Caledonia. Since the mainshock, the USGS has recorded 10 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
168.4957°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 73 km ENE of Tadine, New Caledonia on September 26, 2026 at 10:21 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 -21.2105°, 168.4957°, which is 73 km ENE 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 M5.0 one earlier?
No. This magnitude 4.9 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 78 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: us6000txse). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 26, 2026). M4.9 Earthquake 73 km ENE of Tadine, New Caledonia — September 26, 2026. Retrieved September 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000txse/