M4.6 Earthquake 273 km SSE of Alo, Wallis and Futuna — July 12, 2020
2020-07-12 20:02:33 UTC (2020-07-12) · approx. 8:02 AM UTC-12 local
On July 12, 2020 at 20:02 UTC, a magnitude 4.6 shallow crustal earthquake struck 273 km SSE of Alo, Wallis and Futuna, at a depth of 10.0 km and coordinates -16.6251°, -177.2039°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.2039°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Alo, Wallis and Futuna?
The magnitude 4.6 earthquake that struck 273 km SSE of Alo, Wallis and Futuna on July 12, 2020 at 20:02 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 -16.6251°, -177.2039°, which is 273 km SSE of Alo, Wallis and Futuna.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000amf2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 12, 2020). M4.6 Earthquake 273 km SSE of Alo, Wallis and Futuna — July 12, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000amf2/