M4.0 Earthquake 102 km SE of Alo, Wallis and Futuna — December 1, 2023
2023-12-01 19:08:24 UTC (2023-12-01) · approx. 7:08 AM UTC-12 local
On December 1, 2023 at 19:08 UTC, a magnitude 4.0 deep-focus earthquake struck 102 km SE of Alo, Wallis and Futuna, at a depth of 379.6 km and coordinates -15.0313°, -177.5082°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.5082°E
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Common Questions
How strong was the magnitude 4.0 earthquake near Alo, Wallis and Futuna?
The magnitude 4.0 earthquake that struck 102 km SE of Alo, Wallis and Futuna on December 1, 2023 at 19:08 UTC had a depth of 379.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000lgpu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 1, 2023). M4.0 Earthquake 102 km SE of Alo, Wallis and Futuna — December 1, 2023. Retrieved February 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lgpu/