M4.2 Earthquake 28 km WSW of Illapel, Chile — May 17, 2026
2026-05-17 02:41:41 UTC (1 hour ago) · approx. 9:41 PM UTC-5 local
On May 17, 2026 at 02:41 UTC, a magnitude 4.2 shallow crustal earthquake struck 28 km WSW of Illapel, Chile, at a depth of 51.4 km and coordinates -31.6854°, -71.4663°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-71.4663°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Illapel, Chile?
The magnitude 4.2 earthquake that struck 28 km WSW of Illapel, Chile on May 17, 2026 at 02:41 UTC had a depth of 51.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 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.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000syb7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 17, 2026). M4.2 Earthquake 28 km WSW of Illapel, Chile — May 17, 2026. Retrieved May 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000syb7/