4.1

M4.1 Earthquake 62 km W of Ollagüe, ChileAugust 20, 2026

2026-08-20 07:48:15 UTC (6 hours ago) · approx. 2:48 AM UTC-5 local

MagnitudeM4.1(mb)
Time07:48 UTC2:48 AM UTC-5
Depth124.2 kmintermediate depth
Coordinates-21.262°, -68.858°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 20, 2026 at 07:48 UTC, a magnitude 4.1 intermediate depth earthquake struck 62 km W of Ollagüe, Chile, at a depth of 124.2 km and coordinates -21.2621°, -68.8583°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -21.26°, -68.86°

Earthquake Details

Magnitude
4.1 mb
Depth
124.2 km
intermediate depth
Location
-21.2621°N
-68.8583°E

Technical Information

Event ID
us6000tm2i
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
13
Azimuthal Gap
82.0°
Min Station Distance
0.640°
RMS Residual
0.61 sec
Last Updated
2026-08-20 09:38:03 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Ollagüe, Chile?

The magnitude 4.1 earthquake that struck 62 km W of Ollagüe, Chile on August 20, 2026 at 07:48 UTC had a depth of 124.2 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000tm2i). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 20, 2026). M4.1 Earthquake 62 km W of Ollagüe, ChileAugust 20, 2026. Retrieved August 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tm2i/