4.3

M4.3 Earthquake 14 km W of Chaparral, ColombiaSeptember 21, 2026

2026-09-21 23:15:35 UTC (6 hours ago) · approx. 6:15 PM UTC-5 local

MagnitudeM4.3(mb)
Time23:15 UTC6:15 PM UTC-5
Depth19.7 kmshallow crustal
Coordinates3.747°, -75.613°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 21, 2026 at 23:15 UTC, a magnitude 4.3 shallow crustal earthquake struck 14 km W of Chaparral, Colombia, at a depth of 19.7 km and coordinates 3.7466°, -75.6132°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 3.75°, -75.61°

Earthquake Details

Magnitude
4.3 mb
Depth
19.7 km
shallow crustal
Location
3.7466°N
-75.6132°E

Technical Information

Event ID
us7000tj1k
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
28
Azimuthal Gap
70.0°
Min Station Distance
1.688°
RMS Residual
0.81 sec
Last Updated
2026-09-22 04:17:04 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Chaparral, Colombia?

The magnitude 4.3 earthquake that struck 14 km W of Chaparral, Colombia on September 21, 2026 at 23:15 UTC had a depth of 19.7 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000tj1k). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 21, 2026). M4.3 Earthquake 14 km W of Chaparral, ColombiaSeptember 21, 2026. Retrieved September 22, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tj1k/