M5.0 Earthquake 154 km SSE of Alo, Wallis and Futuna — August 7, 2023
2023-08-07 23:33:10 UTC (2023-08-07) · approx. 11:33 AM UTC-12 local
On August 7, 2023 at 23:33 UTC, a magnitude 5.0 deep-focus earthquake struck 154 km SSE of Alo, Wallis and Futuna, at a depth of 408.5 km and coordinates -15.5425°, -177.4341°. This earthquake was detected by 180 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 385, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.4341°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.0 earthquake near Alo, Wallis and Futuna?
The magnitude 5.0 earthquake that struck 154 km SSE of Alo, Wallis and Futuna on August 7, 2023 at 23:33 UTC had a depth of 408.5 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -15.5425°, -177.4341°, which is 154 km SSE of Alo, Wallis and Futuna.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us6000kyj4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 7, 2023). M5.0 Earthquake 154 km SSE of Alo, Wallis and Futuna — August 7, 2023. Retrieved October 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kyj4/