4.5

M4.5 Earthquake 15 km SSW of Sipí, ColombiaAugust 27, 2026

2026-08-27 16:21:22 UTC (22 hours ago) · approx. 11:21 AM UTC-5 local

MagnitudeM4.5(mb)
Time16:21 UTC11:21 AM UTC-5
Depth64.0 kmshallow crustal
Coordinates4.518°, -76.674°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 27, 2026 at 16:21 UTC, a magnitude 4.5 shallow crustal earthquake struck 15 km SSW of Sipí, Colombia, at a depth of 64.0 km and coordinates 4.5178°, -76.6738°. This earthquake was detected by 43 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.

Map showing earthquake epicenter at 4.52°, -76.67°

Earthquake Details

Magnitude
4.5 mb
Depth
64.0 km
shallow crustal
Location
4.5178°N
-76.6738°E

Technical Information

Event ID
us7000tca5
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
43
Azimuthal Gap
103.0°
Min Station Distance
2.015°
RMS Residual
1.10 sec
Last Updated
2026-08-28 14:18:46 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Sipí, Colombia?

The magnitude 4.5 earthquake that struck 15 km SSW of Sipí, Colombia on August 27, 2026 at 16:21 UTC had a depth of 64.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 4.5178°, -76.6738°, which is 15 km SSW of Sipí, 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: us7000tca5). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 27, 2026). M4.5 Earthquake 15 km SSW of Sipí, ColombiaAugust 27, 2026. Retrieved August 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tca5/