M4.7 Earthquake 163 km SE of Alo, Wallis and Futuna — May 31, 2026
2026-05-31 22:03:14 UTC (2026-05-31) · approx. 10:03 AM UTC-12 local
On May 31, 2026 at 22:03 UTC, a magnitude 4.7 shallow crustal earthquake struck 163 km SE of Alo, Wallis and Futuna, at a depth of 10.0 km and coordinates -15.4616°, -177.1624°. This earthquake was detected by 20 seismic stations with moderate location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.1624°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near Alo, Wallis and Futuna?
The magnitude 4.7 earthquake that struck 163 km SE of Alo, Wallis and Futuna on May 31, 2026 at 22:03 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 -15.4616°, -177.1624°, which is 163 km SE of Alo, Wallis and Futuna.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000sqx7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 31, 2026). M4.7 Earthquake 163 km SE of Alo, Wallis and Futuna — May 31, 2026. Retrieved June 30, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sqx7/