M4.8 Earthquake 279 km SSE of Alo, Wallis and Futuna — July 20, 2024
2024-07-20 14:21:58 UTC (2024-07-20) · approx. 2:21 AM UTC-12 local
On July 20, 2024 at 14:21 UTC, a magnitude 4.8 shallow crustal earthquake struck 279 km SSE of Alo, Wallis and Futuna, at a depth of 10.0 km and coordinates -16.6808°, -177.2000°. This earthquake was detected by 37 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
-177.2000°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Alo, Wallis and Futuna?
The magnitude 4.8 earthquake that struck 279 km SSE of Alo, Wallis and Futuna on July 20, 2024 at 14:21 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 -16.6808°, -177.2000°, which is 279 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.
Actions
Authoritative source: USGS event page (event ID: us7000n0hb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, July 20, 2024). M4.8 Earthquake 279 km SSE of Alo, Wallis and Futuna — July 20, 2024. Retrieved September 28, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n0hb/