M4.7 Earthquake 40 km SSW of Sipí, Colombia — September 18, 2026
2026-09-18 06:17:03 UTC (4 hours ago) · approx. 1:17 AM UTC-5 local
Felt by 6 people across nearby locations. Aftershock of the M5.0 mainshock.
On September 18, 2026 at 06:17 UTC, a magnitude 4.7 shallow crustal earthquake struck 40 km SSW of Sipí, Colombia, at a depth of 68.4 km and coordinates 4.3224°, -76.7931°. This earthquake was detected by 50 seismic stations with good location accuracy and was assigned a USGS significance rating of 342, 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 1 day ago 29 km WSW of Sipí, Colombia. Since the mainshock, the USGS has recorded 15 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 6 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-76.7931°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 40 km SSW of Sipí, Colombia on September 18, 2026 at 06:17 UTC had a depth of 68.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 4.3224°, -76.7931°, which is 40 km SSW 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: us7000ti7x). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 18, 2026). M4.7 Earthquake 40 km SSW of Sipí, Colombia — September 18, 2026. Retrieved September 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000ti7x/