M4.5 Earthquake 15 km SW of San Antonio, Colombia — September 29, 2026
2026-09-29 21:50:29 UTC (1 hour ago) · approx. 4:50 PM UTC-5 local
On September 29, 2026 at 21:50 UTC, a magnitude 4.5 shallow crustal earthquake struck 15 km SW of San Antonio, Colombia, at a depth of 10.0 km and coordinates 3.8311°, -75.5906°. This earthquake was detected by 21 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-75.5906°E
Technical Information
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Common Questions
How strong was the magnitude 4.5 earthquake near San Antonio, Colombia?
The magnitude 4.5 earthquake that struck 15 km SW of San Antonio, Colombia on September 29, 2026 at 21:50 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 3.8311°, -75.5906°, which is 15 km SW of San Antonio, Colombia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000tyfk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 29, 2026). M4.5 Earthquake 15 km SW of San Antonio, Colombia — September 29, 2026. Retrieved September 29, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tyfk/