4.0

M4.0 Earthquake 65 km E of La Tirana, ChileJanuary 31, 2025

2025-01-31 18:16:04 UTC (2025-01-31) · approx. 1:16 PM UTC-5 local

MagnitudeM4.0(mb)
Time18:16 UTC1:16 PM UTC-5
Depth100.9 kmintermediate depth
Coordinates-20.299°, -69.031°
Felt by1DYFI response
Status✓ Reviewed by USGS

On January 31, 2025 at 18:16 UTC, a magnitude 4.0 intermediate depth earthquake struck 65 km E of La Tirana, Chile, at a depth of 100.9 km and coordinates -20.2994°, -69.0312°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -20.30°, -69.03°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.0 earthquake near 65 km E of La Tirana, Chile

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.0 mb
Depth
100.9 km
intermediate depth
Location
-20.2994°N
-69.0312°E
Felt Reports
1
DYFI responses
Community Intensity
1.0
CDI from reports

Technical Information

Event ID
us7000pafd
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
29
Azimuthal Gap
66.0°
Min Station Distance
0.195°
RMS Residual
0.50 sec
Last Updated
2025-04-15 20:55:25 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near La Tirana, Chile?

The magnitude 4.0 earthquake that struck 65 km E of La Tirana, Chile on January 31, 2025 at 18:16 UTC had a depth of 100.9 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 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000pafd). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, January 31, 2025). M4.0 Earthquake 65 km E of La Tirana, ChileJanuary 31, 2025. Retrieved April 15, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pafd/