M4.2 Earthquake 17 km SW of Roncesvalles, Colombia — September 23, 2026
2026-09-23 09:04:13 UTC (1 day ago) · approx. 4:04 AM UTC-5 local
On September 23, 2026 at 09:04 UTC, a magnitude 4.2 shallow crustal earthquake struck 17 km SW of Roncesvalles, Colombia, at a depth of 10.0 km and coordinates 3.9146°, -75.7321°.
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
-75.7321°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Roncesvalles, Colombia?
The magnitude 4.2 earthquake that struck 17 km SW of Roncesvalles, Colombia on September 23, 2026 at 09:04 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: us6000tx28). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 23, 2026). M4.2 Earthquake 17 km SW of Roncesvalles, Colombia — September 23, 2026. Retrieved September 24, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tx28/