M4.2 Earthquake 100 km NW of Valparaíso, Chile — July 19, 2026
2026-07-19 14:45:26 UTC (2026-07-19) · approx. 9:45 AM UTC-5 local
On July 19, 2026 at 14:45 UTC, a magnitude 4.2 shallow crustal earthquake struck 100 km NW of Valparaíso, Chile, at a depth of 10.0 km and coordinates -32.4278°, -72.4283°.
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
-72.4283°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Valparaíso, Chile?
The magnitude 4.2 earthquake that struck 100 km NW of Valparaíso, Chile on July 19, 2026 at 14:45 UTC had a depth of 10.0 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.
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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: us7000t1sz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 19, 2026). M4.2 Earthquake 100 km NW of Valparaíso, Chile — July 19, 2026. Retrieved August 2, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t1sz/