M5.4 Earthquake 76 km ENE of Tadine, New Caledonia — September 4, 2022
2022-09-04 20:15:04 UTC (2022-09-04) · approx. 7:15 AM UTC+11 local
Maximum shaking intensity MMI 4.1 (moderate).
On September 4, 2022 at 20:15 UTC, a magnitude 5.4 shallow crustal earthquake struck 76 km ENE of Tadine, New Caledonia, at a depth of 10.0 km and coordinates -21.2686°, 168.5590°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 63 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity. The nearest populated place is Isangel (population 1,437).
Physical scale: An earthquake of magnitude 5.4 releases seismic energy equivalent to roughly 2 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.2 km — a useful intuition for the size of the slip patch on the fault.
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 25,801 |
| MMI 4 | light | 3,207 |
Earthquake Details
168.5590°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.4 earthquake near Tadine, New Caledonia?
The magnitude 5.4 earthquake that struck 76 km ENE of Tadine, New Caledonia on September 4, 2022 at 20:15 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 -21.2686°, 168.5590°, which is 76 km ENE of Tadine, New Caledonia. The nearest populated place is Isangel (population 1,437).
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000i56w). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 4, 2022). M5.4 Earthquake 76 km ENE of Tadine, New Caledonia — September 4, 2022. Retrieved November 15, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i56w/