M4.7 Earthquake in the Easter Island region — September 18, 2025
2025-09-18 23:55:24 UTC (2025-09-18) · approx. 4:55 PM UTC-7 local
On September 18, 2025 at 23:55 UTC, a magnitude 4.7 shallow crustal earthquake struck in the Easter Island region, at a depth of 10.0 km and coordinates -24.4560°, -112.0681°. This earthquake was detected by 29 seismic stations with good 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
-112.0681°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake in the Easter Island region?
The magnitude 4.7 earthquake that struck in the Easter Island region on September 18, 2025 at 23:55 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 -24.4560°, -112.0681°, which is in the Easter Island region.
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.
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. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000qx8l). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 18, 2025). M4.7 Earthquake in the Easter Island region — September 18, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000qx8l/