M4.7 Earthquake 27 km SW of Sipí, Colombia — September 16, 2026
2026-09-16 20:55:00 UTC (2 hours ago) · approx. 3:55 PM UTC-5 local
Aftershock of the M5.0 mainshock.
On September 16, 2026 at 20:55 UTC, a magnitude 4.7 shallow crustal earthquake struck 27 km SW of Sipí, Colombia, at a depth of 51.5 km and coordinates 4.4600°, -76.8006°. This earthquake was detected by 99 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.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 3 hours ago 29 km WSW of Sipí, Colombia. Since the mainshock, the USGS has recorded 13 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
-76.8006°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near Sipí, Colombia?
The magnitude 4.7 earthquake that struck 27 km SW of Sipí, Colombia on September 16, 2026 at 20:55 UTC had a depth of 51.5 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 4.4600°, -76.8006°, which is 27 km SW of Sipí, Colombia.
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.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.7 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 29 km WSW of Sipí, Colombia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Authoritative source: USGS event page (event ID: us7000thxm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 16, 2026). M4.7 Earthquake 27 km SW of Sipí, Colombia — September 16, 2026. Retrieved September 16, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000thxm/