M4.5 Earthquake 88 km SE of Alo, Wallis and Futuna — November 22, 2021
2021-11-22 15:44:13 UTC (2021-11-22) · approx. 3:44 AM UTC-12 local
On November 22, 2021 at 15:44 UTC, a magnitude 4.5 deep-focus earthquake struck 88 km SE of Alo, Wallis and Futuna, at a depth of 369.5 km and coordinates -14.9616°, -177.6298°.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.6298°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near Alo, Wallis and Futuna?
The magnitude 4.5 earthquake that struck 88 km SE of Alo, Wallis and Futuna on November 22, 2021 at 15:44 UTC had a depth of 369.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -14.9616°, -177.6298°, which is 88 km SE of Alo, Wallis and Futuna.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000fw7k). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 22, 2021). M4.5 Earthquake 88 km SE of Alo, Wallis and Futuna — November 22, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fw7k/