4.4

M4.4 Earthquake 103 km SSW of Uyuni, BoliviaJuly 26, 2025

2025-07-26 18:38:34 UTC (2025-07-26) · approx. 2:38 PM UTC-4 local

MagnitudeM4.4(mb)
Time18:38 UTC2:38 PM UTC-4
Depth177.2 kmintermediate depth
Coordinates-21.316°, -67.231°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 26, 2025 at 18:38 UTC, a magnitude 4.4 intermediate depth earthquake struck 103 km SSW of Uyuni, Bolivia, at a depth of 177.2 km and coordinates -21.3156°, -67.2314°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -21.32°, -67.23°

Earthquake Details

Magnitude
4.4 mb
Depth
177.2 km
intermediate depth
Location
-21.3156°N
-67.2314°E

Technical Information

Event ID
us6000qvd1
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
102
Azimuthal Gap
45.0°
Min Station Distance
1.850°
RMS Residual
1.13 sec
Last Updated
2025-10-11 20:57:19 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Uyuni, Bolivia?

The magnitude 4.4 earthquake that struck 103 km SSW of Uyuni, Bolivia on July 26, 2025 at 18:38 UTC had a depth of 177.2 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 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000qvd1). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, July 26, 2025). M4.4 Earthquake 103 km SSW of Uyuni, BoliviaJuly 26, 2025. Retrieved October 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qvd1/