M4.8 Earthquake 288 km SSE of Alo, Wallis and Futuna — July 9, 2026
2026-07-09 21:37:02 UTC (1 day ago) · approx. 9:37 AM UTC-12 local
On July 9, 2026 at 21:37 UTC, a magnitude 4.8 shallow crustal earthquake struck 288 km SSE of Alo, Wallis and Futuna, at a depth of 10.0 km and coordinates -16.8162°, -177.3821°. This earthquake was detected by 22 seismic stations with good location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-177.3821°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Alo, Wallis and Futuna?
The magnitude 4.8 earthquake that struck 288 km SSE of Alo, Wallis and Futuna on July 9, 2026 at 21:37 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 -16.8162°, -177.3821°, which is 288 km SSE of Alo, Wallis and Futuna.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks.
Actions
Authoritative source: USGS event page (event ID: us7000szcz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 9, 2026). M4.8 Earthquake 288 km SSE of Alo, Wallis and Futuna — July 9, 2026. Retrieved July 10, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000szcz/